List questions from quantum-computation

Published on 29 Aug 2022 - 6:57

126

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Prove that $tr\Big(\sum_k E_k^\dagger E_k\rho\Big)=1$ for all $\rho$ implies $\sum_k E_k^\dagger E_k=I$

Published on 27 Mar 2026 - 5:38

81

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How to obtain the unitary operator to get specific partial trace?

Published on 27 Mar 2026 - 7:13

337

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Connection between vector scalar product and trace of matrix product

Published on 17 Sep 2022 - 16:48

37

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Learning Bernoulli Parameter (problem related to a Quantum Algorithm)

Published on 18 Sep 2022 - 9:06

100

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Prove if $E_k=(I\otimes\langle e_k|)U(I\otimes|e_0\rangle)$ then $U=\begin{bmatrix}[E_1]&.&.\\ [E_2]&.&.\\ [E_3]&.&.\\ .&.&.\end{bmatrix}$

Published on 24 Sep 2022 - 17:44

16

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What does Tensor do to the values next to the vector?

Published on 07 Mar 2026 - 5:47

93

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Affine map of single qubit quantum operations

Published on 24 Oct 2022 - 6:19

68

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Trouble proving approximation for quantum simulation using Zassenhaus formula

Published on 27 Mar 2026 - 5:36

57

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the quantum world: is $f$ balanced or constant?

Published on 23 Feb 2026 - 22:21

162

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A question about product representation of quantum Fourier transform

Published on 11 Nov 2022 - 16:33

79

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Cryptography or quantum computing

Published on 19 Nov 2022 - 11:40

405

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Explicit computation of Choi matrix for a qubit channel

Published on 27 Mar 2026 - 7:13

59

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Find $\beta$ block matrix given $\tilde{E}_m\rho_j\tilde{E}_n^\dagger=\sum_k\beta_{jk}^{mn}\rho_k$

Published on 27 Mar 2026 - 5:38

119

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Condition number of a non-invertible matrix and solving with quantum linear systems algorithms

Published on 01 Dec 2022 - 20:37

List Question

Trace function on the quantum expectation

Prove that $tr\Big(\sum_k E_k^\dagger E_k\rho\Big)=1$ for all $\rho$ implies $\sum_k E_k^\dagger E_k=I$

How to obtain the unitary operator to get specific partial trace?

Connection between vector scalar product and trace of matrix product

Learning Bernoulli Parameter (problem related to a Quantum Algorithm)

Prove if $E_k=(I\otimes\langle e_k|)U(I\otimes|e_0\rangle)$ then $U=\begin{bmatrix}[E_1]&.&.\\ [E_2]&.&.\\ [E_3]&.&.\\ .&.&.\end{bmatrix}$

What does Tensor do to the values next to the vector?

Affine map of single qubit quantum operations

Trouble proving approximation for quantum simulation using Zassenhaus formula

the quantum world: is $f$ balanced or constant?

A question about product representation of quantum Fourier transform

Cryptography or quantum computing

Explicit computation of Choi matrix for a qubit channel

Find $\beta$ block matrix given $\tilde{E}_m\rho_j\tilde{E}_n^\dagger=\sum_k\beta_{jk}^{mn}\rho_k$

Condition number of a non-invertible matrix and solving with quantum linear systems algorithms

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