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JRT
  • Member for 3 years, 2 months
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7 votes
1 answer
202 views

Positive semidefinite relationship after partial trace

7 votes
0 answers
138 views

How large can we make the fidelity between mixed states by allowing unitaries?

4 votes
1 answer
162 views

Does closeness in trace distance imply close measurement outcomes?

4 votes
0 answers
53 views

Permutation invariant states have permutation invariant purifications - proof?

3 votes
1 answer
296 views

Hadamard transform on state

3 votes
2 answers
167 views

Can we express $\mathrm{tr}_A((A\otimes B)\rho_{AB})$ in terms of $A$, $B$, $\rho_A$ and $\rho_B$?

2 votes
1 answer
110 views

Is data processing for relative entropy true when states are not normalized?

2 votes
2 answers
187 views

If Alice and Bob share only classical communication resources, is shared entanglement always equivalent to shared randomness?

2 votes
1 answer
150 views

What is the most general quantum operation that preserves the marginal?

2 votes
2 answers
64 views

How to evaluate the mutual information of a classical-quantum state?

2 votes
1 answer
102 views

Does the number of stabilizers bound the number of correctable errors?