Understanding and Measuring One Qubit: Lecture 3 of Quantum Computation and Information at CMU

[@TakaTukaJVM]

I like this class as students are freely asking question. That is very rare these days.

[@nang88]

awesome :)

[@anaghpandey8805]

The lectures are GOLD!! But the poor poor camera work is so disturbing.

[@samarthkhajuria2367]

23.00 I think superposition not only means that the particle is in some mixed-up states of basis but also in some kind of superimposed form of wave and particle nature simultaneously and the act of measuring whatever it might be makes it collapse in one of the states but it also simultaneously loses its wave nature while collapsing. Also, form Heisenberg's uncertainty principle (delta "wave nature" * delta "particle nature" >= h), once particle nature is completely deterministic, delta "wave nature" approach infinity and hence superimposed form cannot be regenerated.

[@AkamiChannel]

Putting things like "wave nature" and "particle nature" into an equation is extremely hand-waving, imprecise, and pseudo-scientific. Particles do not lose their wave form when you measure them. Generally we do not measure their position to 100% precision. We can only measure to some degree of accuracy and it is thus there with its wave form, crests, troughs and all, despite having been narrowed to a smaller possible position space.

[@annawilson3824]

These guys are so annoying asking physics questions in the theoretical computer science class ...

[@srijall]

it is actually a physics department course

[@leif1075]

He says i don't know a lot..why js he teaching this stuff if he doesn't know it??