Question

The action of the error subgroups $S$ and $S'$ on the encoded space

score 39 · Answer 1 · 2023-11-30 12:06:15

39

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The action of the error subgroups $S$ and $S'$ on the encoded space

Published on 30 Nov 2023 - 12:06

score 57 · Answer 2 · 2023-12-17 08:35:52

57

Views

Good book on (Quantum) Complexity and Computability Theories to start learning the theorem $MIP^* = RE$ as an operator algebraist

Published on 17 Dec 2023 - 8:35

score 288 · Answer 3 · 2023-12-19 09:06:57

288

Views

How to find expectation value $p_y$ from the Bloch sphere?

Published on 19 Dec 2023 - 9:06

score 30 · Answer 4 · 2026-03-26 04:34:12

30

Views

Size of an $\epsilon$-net on n-qubit unitaries

Published on 26 Mar 2026 - 4:34

score 33 · Answer 5 · 2024-01-04 16:15:14

33

Views

How to obtain the following equality: $EE' = (-1)^{a.b' + a'.b}E'E$

Published on 04 Jan 2024 - 16:15

score 89 · Answer 6 · 2024-02-04 13:44:59

89

Views

Why are $|0 ⟩$ and $|1 ⟩$ perpendicular to each other?

Published on 04 Feb 2024 - 13:44

score 56 · Answer 7 · 2024-02-20 20:10:23

56

Views

Compute a quantum state $\rho$ corresponding to an ensemble

Published on 20 Feb 2024 - 20:10

score 60 · Answer 8 · 2024-02-20 21:43:57

60

Views

Find an ensemble consisting of three distinct pure states that correspond to the same mixed state

Published on 20 Feb 2024 - 21:43

score 74 · Answer 9 · 2024-02-22 04:37:47

74

Views

Show that a state $\rho=\sum_i p_i|e_i\rangle\!\langle e_i|$ has purifications of the form $\sum_i s_i |e_i\rangle\otimes|f_i\rangle$

Published on 22 Feb 2024 - 4:37

score 53 · Answer 10 · 2024-02-22 21:25:08

53

Views

If $ρ_{AB} ∈ D(H_A \otimes H_B)$ such that $ρ_{A}$ is pure. $\implies ρ_{AB} = ρ_{A} \otimes ρ_{B}$

Published on 22 Feb 2024 - 21:25

score 23 · Answer 11 · 2024-03-01 16:47:10

23

Views

Why does a summation vanish for a constant $f(x)$ in the Deutsch–Jozsa algirthm?

Published on 01 Mar 2024 - 16:47

score 25 · Answer 12 · 2024-03-02 17:25:11

25

Views

Noisy Quantum state exercise regarding trace of matrix.

Published on 02 Mar 2024 - 17:25

score 18 · Answer 13 · 2024-03-08 11:13:58

18

Views

Approximating an unitary matrix to $\mathbb{Z}[i,1/\sqrt2]$ while keeping unitarity

Published on 08 Mar 2024 - 11:13

score 33 · Answer 14 · 2024-03-08 11:45:22

33

Views

A proof of no-cloning theorem in the case of pures states in a qubit system

Published on 08 Mar 2024 - 11:45

score 31 · Answer 15 · 2024-03-18 05:26:07

31

Views

Some properties about the equation $P(z)\phi(z)=0$

Published on 18 Mar 2024 - 5:26

List Question

The action of the error subgroups $S$ and $S'$ on the encoded space

Good book on (Quantum) Complexity and Computability Theories to start learning the theorem $MIP^* = RE$ as an operator algebraist

How to find expectation value $p_y$ from the Bloch sphere?

Size of an $\epsilon$-net on n-qubit unitaries

How to obtain the following equality: $EE' = (-1)^{a.b' + a'.b}E'E$

Why are $|0 ⟩$ and $|1 ⟩$ perpendicular to each other?

Compute a quantum state $\rho$ corresponding to an ensemble

Find an ensemble consisting of three distinct pure states that correspond to the same mixed state

Show that a state $\rho=\sum_i p_i|e_i\rangle\!\langle e_i|$ has purifications of the form $\sum_i s_i |e_i\rangle\otimes|f_i\rangle$

If $ρ_{AB} ∈ D(H_A \otimes H_B)$ such that $ρ_{A}$ is pure. $\implies ρ_{AB} = ρ_{A} \otimes ρ_{B}$

Why does a summation vanish for a constant $f(x)$ in the Deutsch–Jozsa algirthm?

Noisy Quantum state exercise regarding trace of matrix.

Approximating an unitary matrix to $\mathbb{Z}[i,1/\sqrt2]$ while keeping unitarity

A proof of no-cloning theorem in the case of pures states in a qubit system

Some properties about the equation $P(z)\phi(z)=0$

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