User JRT

7 votes

1 answer

216 views

Positive semidefinite relationship after partial trace

asked Dec 15, 2020 at 17:47

6 votes

0 answers

159 views

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

asked Sep 21, 2021 at 9:16

4 votes

1 answer

198 views

Does closeness in trace distance imply close measurement outcomes?

asked Oct 16, 2022 at 22:53

4 votes

0 answers

58 views

Permutation invariant states have permutation invariant purifications - proof?

asked Jun 2, 2021 at 8:34

3 votes

1 answer

311 views

Hadamard transform on state

asked Jan 21 at 23:31

3 votes

1 answer

65 views

Proof for how logical operators generated systematically will satisfy Pauli commutation

asked Sep 5 at 3:52

3 votes

2 answers

189 views

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

asked Mar 16, 2021 at 4:39

2 votes

1 answer

118 views

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

asked Apr 6, 2021 at 4:31

2 votes

2 answers

242 views

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

asked Jan 21, 2021 at 5:06

2 votes

1 answer

161 views

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

asked Mar 10, 2021 at 7:54

2 votes

2 answers

90 views

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

asked Jun 27, 2023 at 15:29

2 votes

1 answer

124 views

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

asked Oct 2, 2023 at 13:37

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12 Questions

Positive semidefinite relationship after partial trace

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

Does closeness in trace distance imply close measurement outcomes?

Permutation invariant states have permutation invariant purifications - proof?

Hadamard transform on state

Proof for how logical operators generated systematically will satisfy Pauli commutation

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

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

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

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

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

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