How to Teleport Schrödinger's Cat

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Previous video on No Cloning: • The No Cloning Theorem
How to teleport Schrödinger’s cat: this video presents the full quantum teleportation procedure, in which an arbitrary qubit (spin, etc) is teleported from Alice to Bob by way of a pair of particles entangled in a bell (EPR) state and the transmission of information via a classical channel.
Thanks to everyone who supports MinutePhysics on Patreon!
Link to Patreon supporters here: www.minutephysi...
REFERENCES:
No Cloning video: • The No Cloning Theorem
The No-Cloning Theorem: en.wikipedia.o...
MinutePhysics on Schrödinger’s Cat: • Schrödinger's Cat
The History of Schrödinger’s (& Einstein’s) Cat: nautil.us/issue...
Original Quantum Teleportation Paper: citeseerx.ist.p...
Wikipedia on Quantum Teleportation: en.wikipedia.o...
Calcium ion teleportation: www.nature.com/...
Teleporting a 2-qubit state: arxiv.org/abs/...
Multi-level teleportation: arxiv.org/abs/...
Scott Aaronson blog post on Teleportation (& Free Will, etc): www.scottaarons...
Classical Teleportation: arxiv.org/abs/...
Blog post on quantum vs classical teleportation: marozols.wordp...
MinutePhysics is on Google+ - bit.ly/qzEwc6
And facebook - / minutephysics
And twitter - @minutephysics
Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
Created by Henry Reich
Music by Nathaniel Schroeder

[@QuantumFracture]

That was a very very accurate explanation of how quantum teleportation works! Even with the "questions" analogy. Bien jugado, Henry. Although I was expecting to listen something: because the teleportation can't be completly perform if the Earth's scientist doesn't tell the moon's scientist the answer of the question he asks to the original cat, *faster than light quantum teleportation is impossible*. He needs to send to the other guy that answer in the traditional way.

[@saia126]

QuantumFracture Y yo justo mientras veía el vídeo estaba pensando en si harías un video sobre teletransportacion..

[@dcs_0]

you know physics has become too complicated when beaming a superposition to the moon becomes "traditional". haha

[@nn3534]

... I totally completely understood what was said there *not*

[@StarrkXIII]

QuantumFracture me duele el cerebro x_x ahora explicalo tú a tu manera :D tus vídeos igual son muy buenos

[@russdill]

The name "quantum teleportation" really screws people up. It should be called quantum entanglement transference or something. It would only have something to do with transporting people or things if their quantum state was important to their makeup. Any quantum entanglement inside people is constantly being destroyed, so the assumption that to transport a person, you need to use quantum teleportation to include all their quantum states is quite dubious.

[@RanOutOfSpac]

If Amazon ever uses this teleportation method, there’s going to be a lot of situations where I have my package but I also don’t have my package.

[@jobhoevenaars7298]

just dont order any animal

[@saivarshithpaluru7684]

@@jobhoevenaars7298 but that's not possible. I NEED to order animals. They taste way too good for me to stop

[@somejellyartywitchyhuman485]

What if you have your package but you don’t have the things inside?

[@MakerManX]

@@saivarshithpaluru7684 do you eat them raw? Or very raw?

[@Twisted_Code]

the thing I'm wondering about this kind of teleportation: What can we do about the matter that ends up rearranged on the transmitting end? According to this, it could basically be any arrangement of particles, which has me concerned it could be unstable or in some way hazardous

[@jmcd1128]

I won't even pretend to understand this.

[@anothercath]

@@Gandhi_Physique What does cat dead times flea alive equal to?

[@ASLUHLUHC3]

How does one find the product of the mortality of two animals? Who knows. Obviously, he's using some strange analogy, but it still did a pretty bad job of helping me understand. This is particularly apparent when you compare it to his more recent series on relativity which was excellent.

[@priyanzhu]

@@ASLUHLUHC3 basic elementary math. it goes as this : (a + b) * (c + d);

[@aniums]

Friend: Do you understand Quantum teleportation now? Me: Yes Friend: How much did you understand? Me: Yes

[@chinkeehaw9527]

The wave function collapsed into yes, even though there is a chance that it collapses into no

[@Justakatto]

no

[@pieguy6992]

Me: Yes/No/Maybe

[@Stadtionalist]

Friend: Do you understand Quantum teleportation now? Me: Moonfly

[@user-uo9gg2zc6j]

|yes>+|no>

[@OudeicratAnnachrista]

11:03 "after we beam them the message..." this is a pretty important bit that most people miss and instead think the teleportation can be done solely by manipulating the entangled pair without transmitting anything else. It deserves more attention I think

[@Xnoob545]

"YES, WE GOT IT! We can now transfer people to locations faster than li-" The universe: woah woah woah, slow down there buddy, not so fast. You won't get away with this, fuck you!

[@capsey_]

@@Xnoob545 "not so fast" i see what you did there

[@raspberryjam]

its like transmitting the full depth of two probabilities for the cost of transmitting two bits of data

[@androgameplayer8148]

​@@raspberryjamSo for an object made out of a bazillion atoms you need to send a bazillion data points

[@Kapin05]

I think this is the only channel where "flea", "moon" and "quantum superposition" can be placed in the same sentence in a way that seems totally normal

[@assiaisindegyara4905]

Well i wouldnt say normal

[@op-fb2cm]

The scientist asked the physicist what quantum superposition was while his cat ate a large flea.

[@diamondsky3787]

@@op-fb2cm thhtas not complety normal

[@small_SHOT]

What is this moon flea’s quantum superposition

[@somejellyartywitchyhuman485]

IKR

[@happytriangleman1157]

Sometimes I like to pretend I understand this stuff.

[@rumfordc]

Imagine a guy has a closed box and asks "Is there a cat in here?" and you say "Maybe?" and then the guy never opens the box. congrats now you're up to speed.

[@theuntitledpodcast2404]

ehhh its a bit easier to imagine this: While blind folded, you push an object onto the floor. There is no sound, and you do not know if it is broken or not. The whole idea is that until you check to see if its broken, it is in a superposition state of being both broken and not broken. When you take off the blindfold, the universe kinda makes up its mind and decides on whether it is broken, or its not broken.

[@JPHenry78]

Example. you drop your phone, is the screen cracked or not. how do you find out. you look, thus collapsing the states of the screen to broken or not. hearing the screen break would be an observation causing the same results as picking it up to look does

[@minezgio3175]

Potato The Turnip How does it depend on weather I check it or not? like is not it already broken when I pick it? I mean that sounds like a magic like phone is not broken but when i pick it up it becomes broken?

[@heikolindenthal6741]

MinezGio Not exactly. Superposition in quantum physics is a state that is completely separated from our intuitive understanding of the world around us. Imagine that: A blind man is trying to figure out the position of a candle that is somewhere located in his room. The only help he's got is a ball he can throw at the candle to tell by the sound where exactly that candle is located. However, the moment he finds out, the position of the candle has changed because he threw a ball at it. The moment we try and meassure the state of a quantum particle, it takes a certain position, even though it behaved as if it had multiple positions before we observed it.

[@Adachi69420]

"Ok, time to teleport a cat" **cat meows** "Fuck"

[@NeorecnamorceN]

This is why it's very important to have a sound proof box.... Or a mute (eh, non-verbal? Non-communicative?? Oh no, I don't know the right term to use... Please don't cancel me!) cat.

[@hanamaomao]

@@NeorecnamorceN _cat scratches the box aggressively_

[@beth8888]

Schrödigers cat walks into a bar, and it doesn't.

[@hairohukosu433]

lol

[@TylireousGaming]

Beth Xx Ima use that now

[@yodings]

go on....

[@sb_zg]

jacksfilms copy m8

[@katuvideot8689]

Beth Xx IT IS SCHRÖDINGERS NOT SCHRODINGERS

[@tokutickler]

Imagine all life as you know it ceasing as every molecule in your body is painfully erased. Meanwhile, thousands of miles away, an exact clone of you with all of your memories goes "Wow, I successfully teleported! And it was completely painless too!" That was always my biggest fear of teleportation.

[@Eze-ml5pi]

Yeah, and even though in the video he says it isn't cloning, the teleportation of this video seems to be one of those, where the original is destroyed/transformed.

[@kjl3080]

Well then you will have to define if a jump in the stream of consciousness cause the consciousness to be no longer the same

[@Eze-ml5pi]

@@kjl3080 what do you mean with jump in the stream of consciousness?

[@earlaweese]

*That doesn’t happen. The same you will teleport there. That’s why people call God good.*

[@earlaweese]

*Your consciousness teleports as well. That clone shit is ridiculous. I’ve already seen my neighbour teleport twice, but she’s playing dumb. She knows I saw her do it too. She’s still the same person - no clone.*

[@samueljoeltangkawarow1288]

me: i think i understand that par-- brain: what? me: wha-- brain: exactly

[@PcPlayer4]

god i just... i just agree

[@alexplaysminc.-.5922]

* *visible confusion* *

[@hazeltree7738]

A superposition of understanding and not?

[@alexplaysminc.-.5922]

This is what happens when you haven't even passed eight grade science and mathemathics and algebra and start trying to understand whatever this is

[@littlenyancat5754]

Teacher: "The test isn't that confusing" The test:

[@kayvour8862]

Lol

[@nicolasladner7113]

Didn't even understand enough to get confused

[@jeffcarey3045]

I've slowly come to realize the MinutePhysics logo is the gravestone of all the dead cats from these videos.

[@JassCodes]

Woah !! Just observed now !

[@morena_2054]

All I heard was: "cat,dead,moon alive,b,-b,cat dead alone"lol

[@clivehandforth3531]

Moe 999 hahahaha

[@bethmil705]

Lol

[@tapanguru4865]

And flea

[@pratikzade2310]

What I understood : writing questions and their answers makes things teleport

[@sethb3090]

Specifically, it makes the answers teleport

[@sarahmellinger8125]

But only if you have magically connected objects

[@leogreaves3251]

apparently so

[@paniniman6524]

Me : looks away for 0.001 seconds “ SUCCESSFUL TELEPORTATION “ me : wtf

[@wassup048]

Any sufficently advanced technology is indistinguishable to magic. So yes, Magic.

[@aperfectlynormalinternetus6715]

wassup048 Only to those who cannot tell the two apart.

[@krystiangolus2841]

@@aperfectlynormalinternetus6715 ``sufficiently advanced`` aka u dont even know wtf is going on

[@theparijat1000]

@@aperfectlynormalinternetus6715 If you understand magic it does not cease to be magic. You start to become a wizard who understands magic.

[@casualsatanist5808]

sooo, in my cats eyes...im a wizard? awesome

[@kevinnelson198]

That’s a line from Thor!

[@raghavkamath]

I understood till 0:00 later on everything went over my head...

[@sawyer3818]

My friend: what are you doing Me: oh just a bit of quantum physics

[@snehithification]

qdqdqipbpbp Friend: No, i meant what are you doing with that cat and...., is that a bomb 😐?

[@dhritimanroyghatak2408]

No a qbit of Quantum mechanics

[@eliaspeter7689]

No kidding, my friend does this. He showed me this too. Quantum physics is his hobby...

[@luigitrippitelli2333]

@@eliaspeter7689 quantum physics is he's HOBBY? what does he when he busy?! DISCOVER PLANETS?!

[@honeyway3104]

After he said “If only we had some way to get there faster...” I genuinely thought he was gonna continue with “...Speaking about that, let’s talk time travel now !!”

[@Yarck-Yurki]

me too

[@maxliu3041]

A few billion fleas were harmed during the making of this video.

[@Shikusu]

liek if u cri evrytim

[@SSummERXD]

and also harmn't

[@jordanbaird3808]

A few billion fleas were in a superposition of harmed and not harmed during the making of this video.

[@leanbeefcake]

good

[@SubaruLegacy-dv9nc]

Good.

[@gabrielchan8516]

They are all dead on the moon with no oxygen.

[@shahinfarzana3189]

mirapo 23 u got selected in google

[@Poog1337]

u got shit English.

[@th3gov3rnm3nt]

Puggles¿? U

[@woosh_police4018]

"And what if they were already dead before going on the moon?" That's what the schrödigers cat is you never know till you open the box.

[@kodrock2529]

Harvard research facility needs you!!!!!

[@tomm4239]

Instructions not clear - Cat and flee have merged as one. Catflee is not amused.

[@iamacey]

*flea Sorry for being that guy

[@cseblivestreaming]

That is a nice one!

[@kathybramley5609]

Tom M But he's good at leaping off the wardrobe sex!

[@hanro50]

Ehhh...I rip a hole into the fabric of the universe. Help?

[@leah7348]

@@iamacey Don't worry, I was just about to be that guy also

[@user-ss2pj1rh7q]

Yes, IKEA furniture is definitely teleportation, I can confirm

[@Darksouls131]

Then confirm

[@ronankelvin09]

Brain.exe has stopped working

[@jlco]

.exe? Well, there's your problem. The mind is built on Unix.

[@kailaine3974]

Have you tried turning it off and on again?

[@swagfogg]

Downgrade to windows 7. It will work fine.

[@rajinkhan7611]

Mine too

[@brain.exehasstopedrespondi9832]

Well I have found my owner

[@raidrimouche7312]

am I the only one who thinks that using quarks instead of cats and fleas would've been simpler?

[@PromptedHawk]

Yes.

[@peAkTalkies]

nah i agree. using macro-scale objects as an analogy for energy fields is confusing for me as well

[@ZoeyZwee]

using coins is ideal IMO. heads and tails are easy to keep straight, but are still macro objects, and won't make people feel like they need any understanding of quarks.

[@arcanics1971]

I agree but not sure it would have had as big of an audience and a lot of people who aren't versed in physics may have been less inclined to follow. But yeah, I got confused by this at points and had to stop the video and check what he'd said but wouldn't (well, probably wouldn't) have had to had it been about elementaries in the first place.

[@RoboBoddicker]

Quarks can't exist in isolation, so no that wouldn't be simpler.

[@Mooncat25]

Can someone teleport my brain back? I think I have lost it in the middle of the video.

[@jussari7960]

EXsnowcat Is it dead or alive?

[@Moz31]

Jussi Marttinen both

[@landr1873]

I will have to deliver it inside a box with a dead flie and a living cat

[@want-diversecontent3887]

Jussi Marttinen .

[@fire-co3pf]

Jussari both

[@RendezvousWithRama]

"Beam me up, Scotty!" "Yes, Captain, but you should probably watch this first." "Ah. Hmm. You know, on second thought, I'll stay here."

[@nermalmovement]

I misread the title and thought it was called “how to teleport a stranger’s cat”

[@DevilsAdvocate4231]

x)))

[@user-ss2pj1rh7q]

Did you get your answer?

[@diamondsky3787]

jqawminufwcweiokviirvj7j

[@np9145]

I misread your comment and thought it was " how to teleport a stranglers cat"

[@overalltommy5376]

Lol

[@MedicEne]

14 minute physics ?!?!

[@fiendin2]

I know right !?

[@DoktorSprite]

MedicEne it's not called 'one minute physics'. The video is less than an hour

[@MedicEne]

Sorry I dont understand whats an hour got to do with anything ?

[@miniminxie1703]

I wish it was "Hourphysics" XD

[@MedicEne]

+ mini minxie SAME!! Love this so much

[@M167641]

huh strange. I didn't realize I lived near a super massive black hole causing what was a minute to MinutePhysics to become 14 minutes and 12 seconds to me...

[@quin2910]

M167641 technically it's still minute physics because the video is in minutes

[@TheDjurze]

M167641 maybe it isn't minute as in time rather minute as in covering a very small part of physics in every video

[@BastyGuitar]

Shouldnt MinutePhysics live close to the black hole? When near a black hole, time slows down, so that when 1 minutes passes there, somewhere else further away 14 minutes pass.

[@rabashamabi1617]

Light-minute? oh wait... that's distance.

[@Ouvii]

Ever seen Minute Rice? That stuff takes like 5 minutes yo.

[@G-741-S]

"You mean it's working? For real this time?! Cause, i still have nightmares about that cat."

[@josephjackson1956]

When *minute physics* needs 14 minutes to explain teleportation only on a theory level...

[@reellezahl]

Yes, it is an explanation in minutes and relatively short for something that could have taken an hour to thoroughly explain. What’s your point? He successfully communicated to a broad audience without making it either too detailed or too watered down, so that people could readily connect, get the general idea, and themselves look up further details. That’s a successful video, esp. considering the otherwise generally content-void rubbish on KZbin like ‘life pranks’, ‘beauty channels’, gossip… about other KZbinrs, the bazillion Minecraft let’s‚ plays, the idiots who spend way too much time over interpretting trailers or mere teasers of the next Game of Thrones season, etc.

[@sarmohanty]

His point is that teleportation is a very big topic

[@kocourkovcijsounej8565]

Still don't understand.

[@thatoneguy9582]

joseph jackson speed the video up 14 times

[@telletubbie13]

You know a scientific theory is different from a theory you have right?

[@xGTCharax]

Instructions unclear: teleporter teleported

[@friedec3622]

Send instruction again: teleport a teleported teleporter

[@xGTCharax]

@@friedec3622 failure: teleported half of self into the future.

[@friedec3622]

10 years later. Breaking news: Half of the teleporter teleported from the teleport appear out of nowhere. With the cat and flea inside

[@xGTCharax]

@@friedec3622 failure: too many fleas to process teleportation, unreasonable and unncessary self-destruct mode activated.

[@nichsulol4844]

@@friedec3622 sadly teleportation is not complete safe

[@themax4865]

Year 2118: *First teleporting of a human expirement* Also year 2118: *the human collapsed in a superposition, expirement failed*

[@friedec3622]

in year 2118 b.c. : where i am?

[@HyperGnome]

Year 2118: First successful teleporting of a human expirement Also year 2118, same experiment: the human collapsed in a superposition, expirement failed

[@hamizannaruto]

@@HyperGnome only 98 years to go.

[@shinygames7730]

The real challenge is to think inside the box

[@jtmichaelson]

I have a very strong suspicion that this could have been explained much simpler. And not in a Deloren transporting you back to 1955 kind of way, either.

[@marcperez2598]

I mean this is about as simple as it gets for quantum teleportation

[@jeepen93]

"I used fleas so that the math would be easier to follow." Is definitely a quote I want to use some day

[@beanieweenies2383]

“Dang I’m short a few atoms for my experiment” *friend on the other side of the planet* “No problem my guy, beaming them to you now”

[@davidreed4713]

Or not

[@greencircle2063]

Instructions unclear, the moon now has a feline populace at war with dead fleas.

[@allijnera]

please don't send me to the moon...

[@tiqosc1809]

Schrödinger's Cat bai

[@jose_yugo]

Don't worry, you would stay on Earth (not intact).

[@allijnera]

Yugo Pellegrini but I would also be on the moon too

[@tiqosc1809]

being in a state of superposition?

[@allijnera]

johnson SC of course.

[@flawmore]

I honestly think you're complicating it. What's wrong with using particles? I think that would be easier to comprehend than cats and fleas. People with no background in this will only be confused and lose track.

[@douglaspantz]

flawmore It’s The Internet. Be realistic.

[@want-diversecontent3887]

flawmore Because it's not the intelligent era. It's the Internet era

[@SiddhantKhisty]

When I was watching this，( a guy studying 11th grade physics) thinks that this is more about probability rather than quantum entanglement

[@deluxeassortment]

I think you lack comprehension of the amount of destruction of cats that is necessary.

[@joshadams5602]

Well everyone has a different perspective. But yeah, I think particles would make it easier on myself to understand.

[@SkriptzSome]

13:15 This means: After sending CAT to the Moon, I might have DOG on Earth now.

[@wellshit9489]

Well this is an absolute win

[@themobiusfunction]

or CAT.

[@biancaramoz]

in 2020, i watched this video and was fascinated, even though i didn't understand much. two years and a lot of research later, i'm studying to get into uni to study physics. this video was one of my wake up calls. thank you so much for that.

[@jenny565]

what if the cat exploded and the bomb did not die?

[@joshp1427]

the your a dum

[@gnanay8555]

BobZ i'm stuck in a nervous laugh because of you x)

[@enderguardian4499]

Wut XD

[@velocics8979]

Jenny HMMMMMMMMMMM

[@letsgetreal2501]

😂

[@andrewconard5922]

I put my cat in a box for a day. It didn't teleport.

[@andrewconard5922]

(Jk if anyone thinks I'm dum)

[@joshp1427]

your a dum

[@reellezahl]

Learn to spell the word ‘dumb’, before you use it.

[@cactussenpai9625]

+reelle Zahl I think this was supposed to be a joke. If you read GladiatorGator's comment he also said (Jk if anyone thinks I'm dum) So Augustus probably made a joke about the word "dum"

[@marska7608]

GladiatorGator You need radioactive particles first.

[@flakratty4916]

just asked a box some sneaky questions and teleported something

[@daccount1994]

hahahaha what the fuck.

[@lk_iron1220]

"You'll see we have four options:" 1. Sleep 2. Stop the maths 3. Eat for once in a month 4. OneMinutePhysics Imma go 4

[@xihuang7670]

I CANNOT IMAGINE PUTTING A CAT IN A BLENDER

[@voltagedrop5899]

a blended cat is a very delicious breakfast...

[@voltagedrop5899]

+Bob Jenkins i prefer boiled dogs for lunch

[@ishanr8697]

You lack imagination then.

[@Egirlspitlover]

Xi H Then put a cat in a blender if you cant imagine it. trust me there is nothing like a cat screaming in pain trying to break out of a blender and you hold down the lid and watch with a raging boner as it is. screeching as it dies a painful horrible death. makes you feel alive

[@Egirlspitlover]

I beat the fuck out of my dick so god damn hard when i watch cats get blendered

[@akshayrathore2882]

It would be much easier to understand with electrons. all the complexity almost killed value of analogy.

[@ValeriePallaoro]

the thing about explaining this sort of science is it doesn't really matter what words you use; so if it matters to you .. then you might want to think about your strategy for understanding science.

[@jimcanterak7349]

There is nothing "easy" about quantum mechanics. Even the most renowned scientists admit they don't fully understand what the fuck is going on in that domain.

[@supernenechi]

No it wouldn't be easier at all for people that don't know how electrons work

[@InspirationalCams]

Completely agree, the cat and flea made it impossible to understand

[@SpiceWeazel]

akshay rathore I agree, especially because it implies to the layman that you can kill a flea on the moon by telling an astronaut whether a cat is dead or alive.

[@heyitzrane3025]

0:12 IKEA is teleportation now

[@hichampiggy9795]

Everybody gangsta until Schrodinger's cat walks in except it doesn't..

[@n0xter95]

I used flies to make it easier to follow My brain: *NOT STONKS*

[@rajinkhan7611]

My brain was brusted while watching the mathematics part

[@dubled9537]

When I was younge I would think my tazos/Pokemon cards would change throughout all the possibilities until I opened them and broke the bond...

[@ProfitPower13]

duble d I used to think that with my yugi oh cards. Still do with scratch tickets.

[@bravelit4378]

Shrödinger's pokémons.

[@rawiniatipene]

Yessss! I do this too! I do not believe in a pack of playing cards that the order of which the playing cards are sitting in is final before you have picked one up and looked at it. You might aswell assume that every card is blank and then decideds what its going to be once you pick it up and look at it. I do believe in a sense that you can jinx something. I feel like maybe the card could have been maybe a 5 but because you asked "please be a 5, please be a 5", its going to decide well since you wanted me to be a 5 and were so demanding, im going to change myself to a 7 or what have you. 😂 so I try to keep my mind as blank as much as possible like when I want something specific like in a game or even a scratchy ticket or the odd time I have played on the pokies. Well im not a very lucky person so im not sure my blank mind thinking is working 😂.

[@slololegend5391]

The problem with this is that the order is predetermined. The cards were put in a certain order in the box. With the cat, it’s a hypothetical thought experiment where there is no possible way to know whether it’s dead or alive.

[@Potoaster]

Ah but say that the deck was somehow completely randomized, with no way of knowing the starting conditions, and remained unobserved until opened. Then would each card be a superposition of all possible 52 cards?

[@gurtejsingh2596]

This feels like algebra, but instead of messing with numbers you're messing with particles. Feels..odd, but its really cool that this actually works!!

[@sarahalden79]

disassembled my cat in order to teleport, didn't work. instructions not clear enough.

[@9uvwxyz]

Sara Jade you were supposed to put the cat in a box with an explosive devise and a flee, that's why it didn't work. Duh.

[@workhardism]

Keep trying. There's always another cat out there.

[@thirdrd0]

Sara Jade Damn those Ikea cats!

[@abbottwyttenbach8193]

Sara Jade says minute physics sees video is 14 minutes long

[@captainzork6109]

14 minute physics

[@xaviermiller9723]

just checking if this was made on april 1st

[@LEGOJediMaster]

?

[@sawyer3818]

it isnt a joke, its just quantum physics

[@Crazy3lfx]

Now we just need to know how to time travel... another 15 minutes video about that please

[@imafireingmylasar]

just call the Doctor. he'll explain it to you.

[@CX1320]

we only can slow time atm

[@coreylando6608]

Crazy3lf He's done that already. To ELI5, slowing down time is really easy, speeding up time is really easy, and going backwards is really, really, REALLY hard.

[@arooobine]

It's basically a big ball of timey wimey.... stuff.

[@tipilot3791]

well he did just tease/confirm thats what his next video is gonna be

[@serendipity-tilde]

Oh, wow... I thought I understood quantum entanglement with the coins on different sides of the universe, but the gunpower and cat analogy explains it a lot more. Thanks!

[@Armansplain]

I know you are using the cat to explain complex ideas in an understandable way. But believe me, this just makes it worse. Using the word ”cat” instead of electron or photon and the words ”dead” and ”alive” instead of spin down and spin up, makes it even more difficult to understand.

[@ordenax]

Half the people wont understand an electron having up and down spin.

[@plutoniumisotope205]

@@ordenax why i thought everyone knows it

[@xexpaguette]

@@plutoniumisotope205 **laughs** *Most people don't even know what a black hole is.*

[@mauriceperham5150]

@@xexpaguette who tf doesn't know that

[@InanisNihil]

@@mauriceperham5150 people who think the earth is flat.. and i dont know .. maybe people who also still think a womens pain while going thru child birth is due to the eating of a fruit 6000 years ago rather then the obvious reason which is humans have EXTREMELY LARGE HEADS compared to other animals due to the brain and thus has to be "forced" out of a tiny vaginal canal...?! that help sorta answer ur question..? 👀 like simple bith pains vs a black hole... if u get teh first wrong.. i dont have "faith" u'll get the the other.. 😂

[@Reggy2000]

I get the feeling you really enoyed making this episode!!!

[@lutyanoalves444]

me2

[@itsawonderfullife4802]

Wow. What an accurate and fun way of explaining Quantum teleportation and switching to Bell basis and performing a Bell measurement! wow! You deserve a science communication award (if one exists) for just this video. Also loved the state with a big tombstone (dead cat) and a little tombstone (dead flea). funny!

[@deathknight1239]

I know im a bit late to this but i can't help but point a few things out. 1. When you mentioned what would happen to the original "CAT" once it was teleported you said it would be in a superposition with every possible three letter configuration but i don't see how that is possible since the original "CAT" was made up of the three letters c,a,t and in order to have any configuration of letters that contained letters beside c,a,t that would imply the teleportation process would have created new matter which is impossible since we know that matter cannot be created nor destroyed only change form. What would actually happen is the original "CAT" would enter a superposition of every possible configuration of those three letters c,a,t. 2. This would imply there is a chance the original "CAT" would remain in its original configuration even if the chance of that happening is extremely low, which would mean there is a very low chance that after the original "CAT" has been "teleported" by reconfiguring matter somewhere else to reform into the "CAT", the original could end up not changing at all as if nothing had happened while the teleported version forms essentially creating an exact copy in other words a clone which earlier in the video you stated is impossible. 3. There fore either it is possible to clone using this method or the method is impossible to begin with and this doesn't even take into consideration the moral and or philosophical implications created by using this method. 4. This entire method is not necessary because using wormholes we can just connect two points in spacetime allowing for instant travel in other words teleportation as theorized by Einsteins theory of general relativity rendering this entire process redundant to begin with. If i missed any thing or am wrong about something please correct me but as far as i know everything i have stated above is correct.

[@DL-kc8fc]

It is good that you concluded that this is a teleport of properties, not objects, which will never be possible unless there is a prefabricated superposition in the target. But Schrodinger's cat, as mentioned at the beginning, is exactly how it can never work in the macro world, which Schrodinger pointed out by his model cat.

[@DanielRibextheonex]

I don't understand anything of this video, but it is so interesting to watch, haha anyone feel me?

[@jaydenlewis1134]

Daniel Ribe Worst brain fuck I've ever had...

[@thiagorodrigues556]

Daniel Ribe Just watch the full thing and nod like I did 😌

[@Alanedu1000]

Thiago Rodrigues kkkk that's what I do

[@xsauce3858]

yeah with you

[@kiirabu197]

yea this is total brain fuck xD

[@intelacer6740]

This is why Einstein called quantum entanglement "spooky" lol

[@brajendrapandey4931]

Every time someone in Harry Potter apparates, he 'dies' one time

[@TheOJDrinker]

I find it hard to focus on what's going on when all I can think about is how Schroedinger's Cat was his way of mocking the whole "it's in everywhere/in every state until we observe it" concept of quantum mechanics. No, it isn't actually in every state it's in one state, you just don't know which it is until you observe it.

[@themoon9750]

0:16 IKEA furniture = Teleportation

[@cyclingcycles7953]

0:00 Video starts.

[@wouterfransen9771]

14:12 Video ends

[@rambir9421]

no need for notifications, am always on youthoob

[@sbala_23]

Happy Singh me 2 bro

[@ynntari2775]

I would understand this astronomically more with particles. The cat and flees feels like a crazy indirect way of explaining that I have to try to imagine how it was supposed to be analogous to particle behaviour

[@spacebread501]

One point I would like to emphasize is that you have to transmit some kind of classical information (here the result of the indirect measurement). And that is what prohibits any kind of faster than light communication.

[@camilohiche4475]

excellent point

[@camilohiche4475]

Plasmaboo I wouldn't go as far as saying that it completely ruins the point of teleportation. Sure, it doesn't correspond to what we commonly picture as teleportation, such as an instant travel mechanism. However this method here may be the only sort of thing to make lightspeed travel actually possible, which in itself is actually an incredible achievement opening huge possibilities (that will, alas, most likely always remain in the domain of sci-fi when it comes to transporting actual people...).

[@TheElitedeath]

Just quantum teleport the information. Easy.

[@Geosearchef]

To be useful, it hasn't got to be able to transmit information faster than light. It makes copying the state of a quantum object possible, which can't be measured at all. (cause the moment it is measured, it collapses into one of two states, but there's no way to get the probabilities of each state, which is what quantum computers use for calculation)

[@KainYusanagi]

So what if we can't do faster than light? We still would be able to transmit matter at significant fractions of it thanks to communications tech. Imagine no more rockets blasting off from the surface of the planet to space, and instead they just get teleported into space directly.

[@crystalking2468]

Yeah,but first.... Let's talk about *PARARELL UNIVERSES* .

[@willyantowilly7165]

ClockMan is this a pannenkoek2012 reference?

[@andrewmat]

@@willyantowilly7165 I'm sure it is

[@thepiratepeter4630]

Teleporting Shrodinger cat to the moon crashes Paper Mario

[@dorafatima10]

I thought you are gonna say "LEMME TAKE A SELFIE

[@JJs_playground]

This confused me more than when I first started watching this video.

[@monkehgamingofficial]

What I don't get: 4:05 to teleport the cat to the moon, we need to get it entangled. To entangle it we need to get something already entangled on the moon. That's almost a catch 22. If I'm not mistaken, this means it's impossible to teleport somewhere we haven't been before. So we could never teleport somewhere really far away, like a neighboring Galaxy unless we went there first. Meaning we'd have to send a bunch of well-trained astronaut volunteers unrelated to another to that said Galaxy, and have them breed in space and raise/train their kids (and hope they catch on and are willing to accept their new lives and understand it's importance) and repeat that cycle until they reach the galaxy to make the observation to teleport whatever it is that will allow them to start setting up the new civilization. Oh, and the entire time, nobody can know what's in the "box" (or state of, w.e.) or else it will all be for nothing.

[@naltronix9904]

Before we kill thousands of cats for science, we must talk about parallel universes.

[@QwerpOS]

Unless the universe is a computer program, and there are many version of that same program but on different forms of hardware, parallel universes probably don't exist.

[@enderguardian4499]

Qwerp, that's debatable.

[@traso56]

late but you didn't understand the reference

[@fxrags337]

We could experiment with weaboos instead of cats

[@6-36-k6t]

now you switch -B to +B but how? ...magic?

[@kjl3080]

Linear algebra, unitary transformation

[@lightsaberproductions8592]

Just watching without understanding a single thing I thought: Hopefully I´m near the end, because it´s getting supercomplicated. ---Loking at the time: 4:30 Oh no, I´m out here.

[@aubrypersilwill4146]

Oh, hell no, amotahere.

[@buttersquids]

I'm a second year physics student and that was such a neat explanation of quantum entanglement!

[@lejink]

I have an entangled pair of gloves in my drawer, i could separate them and give you one in a box You could have left or right, you could travel to the moon and open your box, then by what you see you could infer what glove I have

[@RFDarter]

Dee Jay and what has this to do with cloning?

[@lejink]

quantum entanglement.. not cloning

[@IceMetalPunk]

|L>|R> + |R>|L>

[@WTFRussia1]

My first thought after reading your comment was that obviously entanglement is a bit more complicated than that, but now I'm struggling to think of a reason why. Can somebody explain why this would/wouldn't be considered entanglement?

[@Drebin898]

WTFRussia1 It seems to be the same concept, and I think most phycesist considers it so. But with quantum entangelment both particals are also in a superposition, which is where the weirdness comes in. Its like there is an agreement between them made after one colapses on how they will colapse, even though there is no connecton between them. It has been shown exprementally that their colapsed state isn't predetermend from when the entangelment was made, that is very strange.

[@eddychiajinhong3525]

Instructions not clear. Both cat and flea ended up in China dead.

[@takisgan4828]

Eddy Chia and eaten

[@AfiOye]

🤣🤣

[@mr.gentlezombie8709]

Many cats died to bring us this information.

[@cmw12]

If it were up to me, you would win the internet.

[@melody_florum]

Nothing brings me more joy than people writing emojis or pictures inside genuine mathematical notation

[@cyancoyote7366]

*Mom knocks and comes in* "Jimmy, why exactly did you put Mr. Mittens in a box along with a box of flees?" "Science, mom. Science." *Later that evening* "NASA scientiest found a box of flees hidden on a lunar module just minutes before launch. Their origin is still unknown."

[@TheFlyingMonkey200]

I have a question that I don't think you answer in the video, correct me if I'm wrong, how do particles become entangled?

[@PedroSilva-uk8xx]

TheFlyingMonkey200 the "how" depends on the situation, but it happens when the state of one particle depends on the state of another. for example: in the orbital of an atom, there can be 2 electrons with the condition that one of them has the opposite spin of the other, so, if we measure the spin of one of them and it is positive, we don't even need to measure the other one to know it will be negative, so we say that their states are entangled

[@QwerpOS]

Particles become entangled by interacting with each other. They do this by affecting and reacting to the energy of a field, which itself, can also become entangled with particles, other fields and... itself, i guess?

[@mcclungandsons]

They do the dirty dancing... nobody puts particle baby in a corner. Sounds like a lot of theoretical nonsense to me, but I am just on here looking for funny cat videos... or I'm not ;) Fun Fact Schrodinger didn't even believe in Schrodinger's cat theory

[@t.g.1299]

Particles become entangled when the state of one particle can be determined by the state of another particle. Here's an easy example, say you ordered a chicken sandwich and a hamburger. You got them and they both came in separate boxes, but you don't know which box contains which sandwich. Once you open one box, you know what the other contains. And this is true no matter how far apart those boxes are. This is kind of like when particles are entangled: when knowing the state of one, you can figure out the state of another.

[@abelpalmer552]

This is what's so ridiculous about it, measuring spin of particles or looking in boxes doesn't do ANYTHING to the other box. It doesn't "force nature to decide." It just tells you what it is. Superposition is just the observer's lack of knowledge of the states.

[@OmgItsEco]

wut ... this is probs accurate but i forgot my adhd meds soooo,, HEY LOOK A CAT

[@anng1371]

I appreciate the closed captions very much. Even though I'm not deaf, it still helps (and makes me cheer in happiness because having captions means more accessibility!)

[@mdnpascual]

You said no cloning when teleporting with quantum theory, but in one of your example, in teleporting the word "CAT" there is a very small chance that the word on the earth will stay the same as "CAT" from the superposition probability of all 3 character words. Isn't that now cloning?

[@screwaccountnames]

That chance is exactly the same as the chance that the letters on the moon had spelled "CAT" in the first place. So in that case, it's not cloning, it's just that nothing really happened.

[@petemagnuson7357]

You couldn't infer (without cheating somehow) that the original data was CAT and not DOG, or FXM, or AAA, or HAM, or... so the information is lost. Does that help?

[@IceMetalPunk]

It's not cloning because the original isn't in *one of the possible* states, it's in a superposition of *all the possible states*. So it's not that there's "some probability of it spelling CAT", it's that it's spelling all the words at once, which is...well, very different from the word "CAT" :D

[@rusca8]

IceMetalPunk I guess he means if you look at that after all the process, the collapse of the three letter system could end up being CAT again, just by chance, since there's an equal probability that it will collapse in either of the combinations. But as someone already pointed out, I guess the information about what that three letters were at the beginning is lost.

[@sandeeprmurthy]

Asking the right questions can "literally" take you places :D

[@penguinexpress12]

So if you fly to the moon with a box that might have something in it and mathematically prove it's in the box, that's teleportation?

[@coagmano]

The teleportation part was that you bring a box which might have an alive flea (or jumble of particles) in it to the moon and put the other box which has been entangled with another maybe alive flea (or jumble of particles) into a box with a cat. Then by indirectly measuring the box with cat and flea you transfer the alive/dead state of the cat to the flea on the moon (or convert the jumble of particles on the moon to a cat). The process ends up jumbling the state of the cat on earth. In the jumble of particles scenario, you bring a box of particles to the moon, and when the indirect measurement happens and the information is sent to the moon, you end up with a cat on the moon instead of a jumble of particles and a jumble of particles on the earth instead of the cat. Aka the cat has been teleported from earth to moon via the boxes of particles

[@Joey310years]

But you had to put it in the box in the first place, so if you opened it early you would get the exact same result. But that would make sense, and they would not get grants to study it.

[@coagmano]

If you open the box, you basically remove the entanglement and the cat's state can't be transferred into the jumble of particles on the moon. The point is that you're not putting the cat in the box that you bring to the moon

[@Joey310years]

how did you not? all your really doing with this is a cup trick, then sort of looking under one to see if it is there.

[@coagmano]

This is incredibly simplified (and probably wrong because I am not a quantum physicist) but to use the cup trick analogy: - you have two cups with same things in them, cups one and two - you take cup two to the moon - you get a third cup with a cat, cup three - you put cup one in cup three - you x-ray cup three with cup one in it (so you don't know everything about the contents, but just enough to make the trick work) - you tell the girl on the moon something about what is inside - she tweaks a setting on her machine and now the cat is inside cup two on the moon - cup three no longer contains a cat, only the bits that the cat was once made from note that the cat was not in the first two cups, and was not sent to the moon until the trick takes place

[@williamsimkulet7832]

I never understood why the cat doesn't observe itself being alive...

[@cinquine1]

Its an analogy.

[@williamsimkulet7832]

1. it's. 2. it's a bad analogy is what it is.

[@cinquine1]

William Simkulet Well the original purpose of the analogy was supposed to show that the Copenhagen interpretation was ridiculous, so it's kinda weird that that popsci people have latched onto it so much.

[@cinquine1]

...what?

[@abdoumenouer7762]

So if a human was to be teleported ? ...

[@blairgowan8836]

Who just comes here to listen to some classy bass solos.

[@Jediahgames]

Kermit The Frog lol

[@poseidongaming8322]

Thanks i cant watch his videos anymore now because i keep losing focus listening to the sick bass.

[@Water_Max]

I also can’t focus due to the music.

[@nomadicsynth]

"If only we had some way we could get there... faster." Sounds like you're holding out on us, Henry.

[@macfurry3214]

4 years later, it's been teleported into my recommendation list. Time travel works!

[@SuperJibulus]

What happens to the cat's consciousness? Would it lose its memory and act like an entirely new being, totally brain dead void of its original self, just a physical shell? Or would it be the exact same cat on every level? Would it remember going through the teleporter and its life beforehand and still perceive the universe the exact same way as before?

[@thewatcherinthecloud]

What if the soul exists on a parallel plane and is entangled with our physical existence on this plane? Does the technology we have also account for the entanglement of the soul, or did we not factor for it?? Now if we were teleporting a robot cat, we would not have to worry. The programming state should also be transferred.

[@SuperJibulus]

I don't think the question is about 'the soul' as what is 'the soul'? People are made up of chemicals fundamentally, lots and lots of different substances and so when you break down and reassemble the brain at a molecular level, including the molecules which account for memory and even personality, would they reform totally blank on the other side? Wiped of all data stored by the previous body? If you were transporting a robot cat then wouldn't you have to backup the data before disassembling and reassembling it at a molecular level? The physical being is identical however the information stored within the being is not part of that disassembly and reassembly process as it is just information, code, it isn't physical so shouldn't that be totally erased? With the physical being ending up a vegetable on the other side?

[@thewatcherinthecloud]

Isn't data stored also just a state of being? And isn't the method of teleportation stated by the video just a transference of the state of the molecules from one location to another? The video even states at the end that after molecular state is teleported to Location B, the molecular state at Location A becomes jumbled (12:37). This is further backed up by the word "CAT" teleportation [Before: |CAT> After: |AAA>+|AAB>+....|ZZZ>] (12:56 ). Ergo, if state=being, and being=soul, the state of existence is literally transferred. As we will assume that the total current state of the molecules was transferred (speed of molecules or heat, molecular bonds, etc.), we can assume that the state of existence or the soul is also transferred. This is, however, if the absolute current state is transferred, which is complicated more by the number of particles that are involved in the teleportation. The more number of particles involved, the more particle states we have to account/compute for. It's like going from equations of one variable to equations of n variables. The computation definitely becomes more complex, but as long as we can compute for half of variables involved, we will be able to secure teh state of the other half.

[@Henrix1998]

We are made of atoms (or quantums or something) and only the sum of our parts so nothing would be lost

[@SuperJibulus]

thewatcherinthecloud I understand where you're coming from in terms of a robot cat as in robotics data is a physical change (didn't know this previously), but consciousness is different and so is the memory in a being, so I understand how teleportation could recreate a physical body perfectly, but when deconstructing a chemical memory like in the brain would the data be lost or would it survive?

[@jennhoff03]

That was awesome! I actually followed it, and I've never understood teleportation before. Thank you! :D

[@Thadj1]

Ok, so, at the end you say that the original C-A-T after teleporting would be in a superposition of all possible 3 letter combinations. If you were to look which one, is it possible to end up with C-A-T again, or is that one excluded?

[@KohuGaly]

yes, it is possible to end up with CAT again. But it's equally likely to all other options.

[@sodiepops592]

It could be any 3 letters, this would include C-A-T because the original that you are teleporting is just CAT in a state where it has no superposition of anything else, this is due to you being an observer, meaning it can only be CAT because by being an observer you collapse any possible superpositions your original may have had,, after a succesful teleportation though, the new jumble could be CAT, but until you looked it could be any 3 letter word :)

[@arcanine_enjoyer]

2:30 if minecraft has told me anything that cat can survive the explosion

[@sourlemon360]

instructions not clear, my cat turned into a potato...

[@trina3218]

happy gaming 42 likes. ... answer to our paradox

[@ermgreetings]

happy gaming Lucky....Mine became a chair.

[@videogameguy9093]

And it didn't

[@jonavanderpal]

Instructions unclear, dick stuck in *box*