IQIS Lecture 3.7 — Quantum teleportation

[carlosgruss]

It's crazy that you took the time to create such a good series on YouTube for free so that anyone can try to learn these things. Thank you so much Sir.

[Goheeca]

Very clear explanation. Thank you for your lectures.

[Brabo]

Good video teacher.
If Bob's state is |1> it will cause teleport error, right?

[Harish-oudy]

how can we guarantee that the time required to transmit the information by Alice change the state of entangled qubits?

Suppose ALice sends to Bob the information that Bob needs to apply Z gate, but Bob being a lightyear away.... gets this information a year later...
will this interval of a year not change the state of entangled qubits to something different?

[johannesberger]

I think the prefactors of the decomposition of the state is wrong. Shouldn't it be 1/sqrt(2)*1/sqrt(4) ?

[lilkayrome]

Does the state have to be maximally entangled? If yes, why?

[alishirnia]

Are the 4 possible states Bob Received from Alice on the classical channel added together?

[stanislavtsybyshev]

Am I right to understand that there is actually a tensor product between Phi and Omega states, not "normal" multiplication?

[DensityMatrix]

How does the rearrangement of terms on the bottom work. I’m sure there is a tensor product property I’m not using

[azimjonn]

Shouldn't coefficients in right hand side be 1/(2sqrt(2))?

[WTzReAdY]

In what context can Quantum teleportation be a better solution than just transferring psi directly? I mean that the shared entangled state already needed a way to travel without collapsing. Also It doesn't seem safer than Quantum Key distribution etc... I didn't figure out what was the main advantage of this technique

[FloThePro]

how is the bell measurement performed? what is the mathematical operation? i dont see how alice can get the information of the states othe 2nd and third qubit