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User101
  • Member for 2 years, 5 months
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6 votes
1 answer
570 views

What does the partial trace of $|W\rangle$ states represent physically?

5 votes
2 answers
828 views

How to write the three-qubit GHZ state in the Pauli basis?

5 votes
1 answer
101 views

Can entangled photons create entanglement in material particles?

5 votes
2 answers
211 views

What is meant by a "single-letter" expression for the quantum channel capacity?

5 votes
1 answer
73 views

Action of a channel on an "unphysical" state

4 votes
1 answer
164 views

What are the measurement operators $F_k$ corresponding to a homodyne measurement?

4 votes
1 answer
219 views

Can LOCC operations take product states to non-product states?

3 votes
1 answer
129 views

What is a non-local state?

2 votes
1 answer
50 views

A notational confusion in a Bell like inequality

2 votes
1 answer
25 views

What is meant by "double speed" in dense coding protocol?

2 votes
0 answers
282 views

What it means to say that SWAP gate has maximum operator entanglement entropy?

2 votes
1 answer
233 views

Why von Neumann entropy requires diagonalization and linear entropy doesn't?

1 vote
1 answer
117 views

Can we define W state as $a |001\rangle + b | 010\rangle + c |100 \rangle$?

1 vote
1 answer
96 views

What conditions on the coefficients of a bipartite pure state imply it being entangled?

0 votes
1 answer
121 views

How do we define qubit measurements in a plane?

0 votes
2 answers
220 views

Does the 4x4 matrix $|00\rangle\!\langle00|+|11\rangle\!\langle11|$ have a decomposition?

0 votes
2 answers
74 views

Why are slice states called so?