Quantum Computing
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Sherlock
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16 Questions

Score Activity Newest Views
8 votes
3 answers
866 views

How does the spectral decomposition of the Choi operator relate to Kraus operators?

7 votes
1 answer
1k views

What is the rank of a quantum channel?

6 votes
1 answer
542 views

Are nearly all pure two-qubit state entangled?

5 votes
1 answer
267 views

Prove that rank one projectors have the same partial trace iff they differ by a local unitary operation

5 votes
1 answer
191 views

What does "generator" mean in the master equation?

4 votes
1 answer
79 views

Why coherence measure monotonicity under selective incoherent operation should be form $C\left( \rho \right) \ge \sum_n{p_nC\left( \rho _n \right)}$?

4 votes
1 answer
353 views

Is a quantum channel reversible if all Kraus operators are proportional to unitaries?

3 votes
2 answers
349 views

What is the difference between "permutationally invariant" and "symmetric" states?

3 votes
1 answer
36 views

Why does the condition $\langle \varphi _k\left( t \right) |\dot{\varphi}_l\left( t \right) \rangle =0$ called parallel transport condition?

2 votes
1 answer
176 views

What makes dynamical decoupling a good method since the fidelity after using it can only reach 0.85 or so?

2 votes
1 answer
157 views

How to calculate the action of a channel on part of a quantum state?

2 votes
1 answer
139 views

How to write a Stabilizer state in terms of sum of Pauli strings?

2 votes
1 answer
105 views

Representation of maximally entangled states of $2n$ qubits with Pauli matrices?

2 votes
2 answers
370 views

How to understand intuitively the concavity of the binary entropy?

2 votes
1 answer
52 views

Direct sum in Eq.(25) of *A Grand Unification of Quantum Algorithms* should be changed into $\sum_\lambda$?

1 vote
1 answer
79 views

For bipartite mixed state, if one part is pure, then the global mixed state is a product state?

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