List questions from quantum-information

Published on 25 Mar 2026 - 17:35

105

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About density matrices as both the vertices of a convex hull and the basis of a matrix space

Published on 26 Mar 2026 - 7:35

121

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About the kernel/null space of a quantum channel as a linear map

Published on 26 Mar 2026 - 6:21

33

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Proof that adjoint is equal to complex conjugate in a quantum information theory viewpoint

Published on 26 Mar 2026 - 4:30

90

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How quickly is a Lie algebra generated using commutators?

Published on 04 Aug 2023 - 23:26

123

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A Property of the Trace-Norm

Published on 10 Aug 2023 - 20:26

128

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Exercise 4.9 Nielsen and Chuang's "Quantum Computation and Quantum Information

Published on 26 Mar 2026 - 1:10

59

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Prove that $\xi (\rho) = tr_{env} \left[ U (\rho \otimes \rho_{env}) U^{\dagger}\right] = \sum_{k} E_{k}\rho E_{k}^{\dagger}$

Published on 19 Aug 2023 - 10:26

45

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Are two linear mappings $M$ and $N$ on $\mathcal{S}(H_A \otimes H_B)$ equal if they have same behaviour on product states?

Published on 23 Aug 2023 - 10:43

52

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Quantum mechanics

Published on 21 Mar 2026 - 8:10

43

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2nd order Commutant of permutation matrices

Published on 08 Sep 2023 - 8:46

41

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Conditions for inverse of a matrix

Published on 26 Mar 2026 - 6:14

65

Views

Why should the symmetric logarithmic derivative be linear?

Published on 11 Sep 2023 - 8:22

148

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Decomposing the unitary Haar measure as product of unit vector Haar measures

Published on 26 Mar 2026 - 4:34

54

Views

What does "coarse" mean in the context of probability bounds and Markov's inequality?

Published on 14 Sep 2023 - 17:29

List Question

Question about the toric code

About density matrices as both the vertices of a convex hull and the basis of a matrix space

About the kernel/null space of a quantum channel as a linear map

Proof that adjoint is equal to complex conjugate in a quantum information theory viewpoint

How quickly is a Lie algebra generated using commutators?

A Property of the Trace-Norm

Exercise 4.9 Nielsen and Chuang's "Quantum Computation and Quantum Information

Prove that $\xi (\rho) = tr_{env} \left[ U (\rho \otimes \rho_{env}) U^{\dagger}\right] = \sum_{k} E_{k}\rho E_{k}^{\dagger}$

Are two linear mappings $M$ and $N$ on $\mathcal{S}(H_A \otimes H_B)$ equal if they have same behaviour on product states?

Quantum mechanics

2nd order Commutant of permutation matrices

Conditions for inverse of a matrix

Why should the symmetric logarithmic derivative be linear?

Decomposing the unitary Haar measure as product of unit vector Haar measures

What does "coarse" mean in the context of probability bounds and Markov's inequality?

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