Posted by unknown on Sunday, February 24, 2013 at 8:50pm.
Alice and Bob share a state a++⟩+b−−⟩, where the first qubit is Alice's and the second qubit is Bob's. Alice measures her qubit in the standard basis and sends the measurement outcome to Bob. If Bob wants a+⟩+b−⟩, what gate does he apply to his qubit in the following two cases? Choose your answer from I,X,Z,H.
When Alice's outcome was 0:
When Alice's outcome was 1:

Physics  ENOUGH!  Ms. Sue, Sunday, February 24, 2013 at 8:51pm
Please show your work on your previous posts before you post any more.

Physics  helper, Tuesday, February 26, 2013 at 2:04am
I
X

Physics  horseman, Thursday, March 14, 2013 at 8:39am
I think the same, that in first case you don´t have to do anythin, and in the second case it´s a bit flip, but it is not correct, why? I think it´s because the sign basis used at the begining? So which could be the correct answer?

Physics  sss, Sunday, March 17, 2013 at 5:15pm
0 I,H

Physics  Anonymous, Sunday, September 15, 2013 at 12:09pm
what are the answers for 6th a and 6th b questions pls help me
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