John Preskill: From the Early Universe to the Future of Quantum Computing

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John Preskill is the Richard P. Feynman Professor of Physics at Caltech, a title many physicists would cherish. He is widely known in the field for his work as a theoretical physicist spearheading the field of Quantum Computing, where he is Director of Caltech’s Institute for Quantum Information and Matter, but his expertise and contributions span a far broader spectrum of topics. His background is in theoretical particle physics, gravitation, and cosmology. As a graduate student, his seminal work on the cosmological implications of magnetic monopoles in Grand Unified Theories helped lead Alan Guth to develop his theory of Inflationary Cosmology, in part to resolve a cosmological conundrum John first elucidated. Since that time, John has explored condensed matter systems and the physics of black holes, made a famous bet with Stephen Hawking, and coined the term “quantum supremacy”, to describe a metric that might reveal the first time a quantum computer resolved a problem that a classical computer could not resolve in a feasible human timescale.
As Director the Caltech Institute, John leads one of the most vibrant programs exploring quantum information and quantum computation, and I was happy to have the opportunity to connect again with my old friend and colleague to discuss this rapidly evolving field, about which so much is written in the popular press, and which may impact on all of our lives in the 21st century. In our discussion we tried to separate the wheat from the chaff, to discuss the future of the field, its current state, and challenges and opportunities. In addition, we discussed his own scientific career and the physics areas that have excited him, and what helped drive him to become a physicist in the first place. It was a fascinating discussion and I am sure you will be both entertained, and enlightened.
Consider supporting the podcast and the Origins Project Foundation at www.originsproject.org/

[@alimoghaddam5669]

It may sound like I am making this up. But I was desperately waiting for such an interview in one of the very few podcasts I follow. So this is a dream that came true and already made my Saturday afternoon more cheerful than it could be. Apart from sharing the same passion and already learning a lot from John's lecture notes, especially on quantum information and computing, I find his voice and intonation very enjoyable. Thanks, origin podcast and Lawrence for this amazing interview with one of the great physicists of the time.

[@user-fj2id1my8m]

П

[@kevincasson9848]

What a fantastic erudite scientist John Prekill is. I could listen to him talk 24/7. Didn't want this interview to end. First class❤❤

[@sailorr4287]

Great to have an interviewee accustomed to Larry’s style and willing, introvert or not, to talk through, past, and over innumerable egocentered interruptions.🎉

[@aldiergreen]

And it looks like he's not doing it because he enjoys it... Thanks for your patience, John.

[@martinpollard8846]

Outstanding. Thank you both.

[@nuqwestr]

Preskill >40dB SNR Krauss

[@karlgoebeler1500]

Yes I do here the conversation and I even here the whisper in the air

[@afammadudaniel2982]

When you talked about going to the horse's mouth, I saw the gentle smile that kinda implied you meant it literally!😂 I love John. He is a dynamic thinker. The way he thinks about quantum computation application is just as original as though the horse's mouth is his... Of course you went to the horse's mouth!

[@nunomaroco583]

Amazing talk, human imagination and ingenuity allways find a way. ...all the best.

[@woody7652]

Thanks, Lawrence!

[@holysquire8989]

Introverts are more passionate than extroverts. John Preskill sublimates that passion when he lectures.

[@joeremus9039]

Wonderful! Fascinating history and concepts of physics spoken in a friendly way. This is incredibly enjoyable.

[@limsann]

Awesome discussion

[@GCOS62]

Whoa! I still have my copy of The World of Science, by Jane Werner Watson, foreword by Sir Lawrence Bragg. The binding is falling to bits, but yes, there are Feynman and Gell-Mann on page 113. Wonderful book! I loved it when I was a kid, and read it over and over again.

[@raya.p.l5919]

I can prove Jesus power less than a second

[@charlesledbetter1735]

Of course you can and so has eveyone who calls in to the The Atheist Experience show. Call them and share. Please share with Matt Dillahunty. Also you should share it with researchers and you will win the Noble Prize of all time. Your picture will be on Time magazine and you will be famous throughout the world. Why not save yourself all this trouble and let your weak ass god do it's own promotional act? What kind of weak ass god you got that needs a human to help it?

[@brianjackson2726]

00000u0000000000000000

[@jinstinky501]

Nerd

[@raya.p.l5919]

@@jinstinky501 so my level 2 prayer didn't work for you. So u need a secret. The Illuminati aka fallen angels aliens NASA what ever you want to call them in there flying tin cans. So I ripped the soul out there daddy the devil after he went dragon just to make it a fair fight. So magic is negative energy prayers sorcery mix in spirits are done to . Ohh Mars is only 250 miles away an heaven is on Mars moon. That's what all the thrusters are for space x Star ship try to punch through the vacuum and destroy Mars moon. Can u say C. G I . Space is 25 thousand SQ miles. Sun an moon are a acre big. Breathable air through out space Angels have to breath. Now u can experience Jesus healing energy All old aches and pains will be washed away. Takes 30 minutes best to relax and shut yr eyes. After negative energy will creep out yr feet. Tell tonight at 11 eastren an who ever you are with So better explain. Because it is intense. But u will be allowed level 1 portion of youth longevity digestion self beauty. End game supermen an women. Governing system u don't have true compassion for your fellow man u will go back to having to eat an crap an live out yr speck of existence

[@GarioTheRock]

Fascinating discussions as usual :)

[@griffinfoxcroft9808]

😊

[@griffinfoxcroft9808]

😊

[@griffinfoxcroft9808]

😊😊

[@griffinfoxcroft9808]

😊

[@griffinfoxcroft9808]

😊

[@afammadudaniel2982]

Listening to John talk about not having a paper till the last years of his PhD is absolutely motivational.

[@karlgoebeler1500]

Yes the "mass" of the object I was attached to would have been far larger than any electron, proton or neutron. Wall circuitry was eight ft long from point of attachment. 6 ft to the light bulb itself. Time was between 1 to 2 seconds and yes I had just enough time to realize that I was going to collide with the tungsten element. Dragster fast yet slower than the flow of electrons in the wall circuitry.

[@paulc96]

Dear Prof Krauss, I greatly enjoy your videos (and books), but 2 and a quarter hours is just too much, when there are many other videos that l want to watch. Would it be possible please, to produce a shorter, "Highlights" version of a video ? Thanks.

[@TheOriginsPodcast]

we are planning to start releasing clips

[@USS-SNAKE-ISLAND]

"Adiabatic." Gotta keep my dictionary right here on the desk listening to this man. Wow.

[@neils5313]

Extremely fascinated to this great lecture about this expansive topic in Quantum physics , We can hear all your intense work you are both engaged in , Interesting researches in science in field work when not tested, examined than in the theory of , It was a great podcast for 2 hours with John Preskill and Richard P. Feynman in their expert field, Congrats on all your achievements and vast knowledge base in science, Nam myoho renge kyo ❤️🙏 I was captured by both your methodical minds ❤🙏

[@robb6059]

"A human being's only obligation is spiritual realization."

[@roberthutchison8197]

WOW! A lot of what they talked about is new to me. What we need is a dictionary of some kind so we can look up some of the new ideas of science...

[@mazin16091969]

[@karlgoebeler1500]

Had enough time to observe the layout, Setup before they released the coupling/

[@karlgoebeler1500]

Yes you are another regular

[@Czeckie]

for the love of god, lawrence, please, let the guest speak

[@Terryts3]

Quantum concludes that all material is somehow connected, in reality it is? Every Hydrogen molecule mates with Oxygen molecule? I submit Hydrogen down to atomic size each molecule is doing the same thing at the same time, converting from solid to gas etc? They are in a sense all knowing what the other molecules are doing.

[@wbiro]

A Q-bit (from the explanations that I've run across): a self-contradictory notion that speculators nevertheless run with (which may reflect the strained explanations rather then the reality)...

[@vykintasmorkvenas6839]

Yet another "explanation" of qubit that didn't make anything clearer ;) Is there anyone in this world capable of explaining how exactly those cubits are "measured" and how the result of that measurement translates to that fantastic computing capability declared.

[@ZambeziKid]

LK - I... a .... e.... i ... and ....i ... e.... Audience: Zzzzzzz

[@CandidDate]

Math uses you, you don't use math.

[@billdrumming]

Lawrence get a better mic for yourself

[@Vlasko60]

Just get the volume mix right.

[@spotthedraco2353]

We've found the aliens subscribe today 👽🦎✌

[@fc-qr1cy]

I DECIDED to skip church today and watch this. The Universe is older than Earth Religions. so i would rather listen to John then a preacher..

[@daltanionwaves]

As an atheist though, I can appreciate that church has many great benefits, one of the most interesting is that social cohesion, at either the level of a local community or of a nation -emerge naturally from the shared values and continuous discourse the church provides. And a cohesive society is dramatically more productive, providing a lot more health, human happiness and wealth, than a society in conflict. Even in a country that is culturally or racially diverse, as long as society shares similar values it becomes a single cohesive human society.. I would rather listen to this than go to church as well... But it's also good that you go to church sometimes.

[@timothygolden5321]

You sure better hope that n-tanglement doesn't show up... no, really, the last time I checked in the promises were far larger than the strides. You sure you're not scamming us for more dough?

[@afsar_gunner5271]

Prof Krauss is a scientist but when he debates about God/religion etc then he really makes himself look so stupid !! Also let me remind Krauss that Nothing is Nothing !!

[@GarioTheRock]

You realize he has a whole chapter in one of his books on this matter? Let's see your theory in your book on the physics of existence or lack thereof.

[@SpiritualPsychotherapyServices]

In your own words, define “NOTHING”. ☝️🤔☝️

[@SpiritualPsychotherapyServices]

​@@GarioTheRock 🐟 02. A BRIEF SYNOPSIS OF “LIFE”: Everything, both perceptible and imperceptible - that is, any gross or subtle OBJECT within the material universe which can possibly be perceived with the cognitive faculties, plus the SUBJECT (the observer of all phenomena) - is to what most persons generally refer when they use the term “God”, since they usually conceive of the Primeval Creator as being the Perfect Person, and “God” (capitalized) is a personal epithet of the Unconditioned Absolute. However, this anthropomorphized conception of The Absolute is a fictional character of divers mythologies. According to most every enlightened sage in the history of this planet, the Ultimate Reality is, far more logically, Absolutely NOTHING, or conversely, Absolutely EVERYTHING - otherwise called “The Tao”, “The Great Spirit”, “Brahman”, “Pure Consciousness”, “Eternal Awareness”, “Independent Existence”, “The Ground of All Being”, “Uncaused Nature”, “The Undifferentiated Substratum of Reality”, “The Unified Field”, et cetera - yet, as alluded to above, inaccurately referred to as a personal deity by the masses (e.g. “God”, “Allah”, “Yahweh”, “Bhagavan”, etc.). In other words, rather than the Supreme Truth being a separate, Blissful, Supra-Conscious Being (The Godhead Himself or The Goddess), Ultimate Reality is Eternal-Existence Limitless-Awareness Unconditional-Peace ITSELF. That which can be perceived, can not be perceiving! Because the Unmanifested Absolute is infinite creative potentiality, “it” actualizes as EVERYTHING, in the form of ephemeral, cyclical universes. In the case of our particular universe, we reside in a cosmos consisting of space-time, matter and energy, without, of course, neglecting the most fundamental dimension of existence (i.e. conscious awareness - although, “it” is, being the subject, by literal definition, non-existent). Just as a knife cannot cut itself, nor the mind comprehend itself, nor the eyes see themselves, The Absolute cannot know Itself (or at least objectively EXPERIENCE Itself), and so, has manifested this phenomenal universe within Itself for the purpose of experiencing Itself, particularly through the lives of self-aware beings, such as we sophisticated humans. Therefore, this world of duality is really just a play of consciousness within Consciousness, in the same way that a dream is a person's sleeping narrative set within the life-story of an “awakened” individual. APPARENTLY, this universe, composed of “mind and matter”, was created with the primal act (the so-called “Big Bang”), which started, supposedly, as a minute, slightly uneven ball of light, which in turn, was instigated, ultimately, by Extra-Temporal Supra-Consciousness. From that first deed, every motion or action that has ever occurred has been a direct (though, almost exclusively, an indirect) result of it. Just as all the extant energy in the universe was once contained within the inchoate singularity, Infinite Consciousness was NECESSARILY present at the beginning of the universe, and is in no way an epiphenomenon of a neural network. Discrete consciousness, on the other hand, is entirely dependent on the neurological faculty of individual animals (the more highly-evolved the species, the greater its cognitive abilities). “Sarvam khalvidam brahma” (a Sanskrit maxim from the “Chandogya Upanishad”, meaning “all this is indeed Brahman” or “everything is the Universal Self alone”). There is NAUGHT but Eternal Being, Conscious Awareness, Causeless Peace - and you are, quintessentially, that! This “Theory of Everything” can be more succinctly expressed by the mathematical equation: E=A͚ (Everything is Infinite Awareness). HUMANS are essentially this Eternally-Aware-Peace, acting through an extraordinarily-complex biological organism, comprised of the eight rudimentary elements - pseudo-ego (the assumed sense of self), intellect, mind, solids, liquids, gases, heat (fire), and ether (three-dimensional space). When one peers into a mirror, one doesn't normally mistake the reflected image to be one's real self, yet that is how we humans conventionally view our ever-mutating form. We are, rather, in a fundamental sense, that which witnesses all transitory appearances. Everything which can be presently perceived, both tangible and immaterial, including we human beings, is a culmination of that primary manifestation. That is the most accurate and rational explanation for “karma” - everything was preordained from the initial spark, and every action since has unfolded as it was predestined in ETERNITY, via an ever-forward-moving trajectory. The notion of retributive (“tit-for-tat”) karma is just that - an unverified notion. Likewise, the idea of a distinct, reincarnating “soul” or “spirit” is largely a fallacious belief. Whatever state in which we currently find ourselves, is the result of two factors - our genetic make-up at conception and our present-life conditioning (which may include mutating genetic code). Every choice ever made by every human and non-human animal was determined by those two factors ALONE. Therefore, free-will is purely illusory, despite what most believe. Chapter 11 insightfully demonstrates this truism. As a consequence of residing within this dualistic universe, we experience a lifelong series of fluctuating, transient pleasures and pains, which can take the form of physical, emotional, and/or financial pleasure or pain. Surprisingly to most, suffering and pain are NOT synonymous. Suffering is due to a false sense of personal agency - the belief that one is a separate, independent author of one’s thoughts, emotions, and deeds, and that, likewise, other persons are autonomous agents, with complete volition to act, think, and feel as they wish. Another way of stating the same concept is as follows: suffering is due to the intellect being unwilling to accept life as it manifests moment by moment. There are five SYMPTOMS of suffering, all of which are psychological in nature: 1. Guilt 2. Blame 3. Pride 4. Anxiety 5. Regrets about the past and expectations for the future These types of suffering are the result of not properly understanding what was explained above - that life is a series of happenings and NOT caused by the individual living beings. No living creature, including Homo sapiens, has personal free-will. There is only the Universal, Divine Will at play, acting through every body, to which William Shakespeare famously alluded when he scribed “All the world's a stage, and all the men and women merely players.” The human organism is essentially a biopsychological machine, comprised of the five gross material elements (which can be perceived with the five senses) and the three subtle material elements (the three levels of cognition, which consist of abstract thought objects), listed above. Cont...

[@HarryNicNicholas]

lol, and you can't quote mine. the phrase is "something from nothing" and that's also god's trick, isn't it. we can demonstrate the universe, can you demonstrate god. cos if you can't then you haven't got much to boast of.

[@HarryNicNicholas]

"This channel doesn't have any content" why am i not surprised.