User Josu Etxezarreta Martinez

19 votes

1 answer

4k views

Is the Pauli group for $n$-qubits a basis for $\mathbb{C}^{2^n\times 2^n}$?

asked Jul 11, 2018 at 8:12

19 votes

1 answer

5k views

Twirling Quantum Channels: Pauli and Clifford Twirling

asked May 28, 2019 at 8:51

16 votes

1 answer

3k views

What is the Helstrom measurement?

asked Sep 5, 2018 at 14:59

16 votes

1 answer

792 views

Violation of the Quantum Hamming bound

asked May 15, 2018 at 8:16

13 votes

2 answers

1k views

Degeneracy of Quantum Error Correction Codes

asked May 14, 2018 at 10:19

12 votes

5 answers

743 views

Advances on imperfect quantum copying

asked Oct 24, 2018 at 13:43

10 votes

0 answers

94 views

Entanglement-assisted hashing bound for asymmetric depolarizing channels

asked Sep 30, 2019 at 15:10

9 votes

1 answer

585 views

Advances in Quantum Channel Capacity

asked Jun 29, 2018 at 8:09

9 votes

2 answers

2k views

Allowed CNOT gates for IBM Q 5 quantum computer

asked May 30, 2018 at 14:58

8 votes

2 answers

481 views

Reference on MITxPRO Applications of Quantum Computing Professional Certificate Program

asked Jun 1, 2018 at 8:01

8 votes

2 answers

559 views

Practical Implementations of QECCs in IBM Q Experience

asked Jun 5, 2018 at 9:59

8 votes

1 answer

970 views

What quantum channels are considered in quantum communication, and how does this choice affect the construction of error correction codes?

asked May 22, 2018 at 10:14

7 votes

1 answer

346 views

Collective measurements: importance and realization

asked Sep 25, 2018 at 13:17

7 votes

1 answer

259 views

$T_2>2T_1$ qubits on the ibm_washington quantum processor

asked Nov 19, 2021 at 17:51

6 votes

1 answer

303 views

Quantum capacity for serial composition of quantum channels

asked Apr 13, 2021 at 15:07

6 votes

1 answer

2k views

Confusion on the definition of the phase-damping channel

asked Nov 26, 2018 at 11:40

6 votes

1 answer

133 views

Quantum Algorithm for MIMO ML detection

asked Oct 3, 2018 at 15:22

5 votes

2 answers

88 views

EA-Turbo simulation package

asked Sep 17, 2018 at 10:39

5 votes

0 answers

160 views

Quantum Belief Propagation decoding

asked Aug 8, 2018 at 14:10

5 votes

2 answers

146 views

Does the no-cloning theorem impose limits on the capabilities of quantum networks?

asked Jun 21, 2018 at 14:31

5 votes

0 answers

510 views

Real-life examples of classical-quantum channels

asked Jan 22, 2019 at 16:25

5 votes

0 answers

123 views

Why is the quantum Fisher information $J_f=[f(\frac43-f)]^{-1}$ for maximally entangled qubit pairs?

asked Apr 1, 2019 at 14:19

5 votes

2 answers

586 views

Stabilizer circuit synthesis via Clifford gates

asked Jan 14, 2020 at 16:25

5 votes

1 answer

1k views

Qubit dephasing times

asked May 9, 2022 at 16:10

5 votes

1 answer

331 views

Does proving $Q^{(1)}(\mathcal{N}\otimes\mathcal{N})=Q^{(1)}(\mathcal{N})+Q^{(1)}(\mathcal{N})$ imply additivity for arbitrary $n$?

asked Oct 31, 2022 at 12:12

4 votes

1 answer

267 views

Clarifying the relationship of the probabilities of depolarizing channel and relaxation/dephasing times

asked Mar 20, 2019 at 12:28

4 votes

0 answers

134 views

What is the quantum capacity of the combined amplitude and phase damping channel?

asked Oct 1, 2021 at 15:04

4 votes

2 answers

1k views

How do you implement a negative controlled gate using the regular controlled gate?

asked Jun 21, 2019 at 10:50

4 votes

1 answer

60 views

Experimental Realization of Superactivation of Quantum Capacity

asked Sep 20, 2018 at 9:52

3 votes

1 answer

388 views

What are Tensor Networks and which is the relationship they have with quantum computing?

asked Sep 3, 2018 at 10:37

Stack Exchange Network

42 Questions

Is the Pauli group for $n$-qubits a basis for $\mathbb{C}^{2^n\times 2^n}$?

Twirling Quantum Channels: Pauli and Clifford Twirling

What is the Helstrom measurement?

Violation of the Quantum Hamming bound

Degeneracy of Quantum Error Correction Codes

Advances on imperfect quantum copying

Entanglement-assisted hashing bound for asymmetric depolarizing channels

Advances in Quantum Channel Capacity

Allowed CNOT gates for IBM Q 5 quantum computer

Reference on MITxPRO Applications of Quantum Computing Professional Certificate Program

Practical Implementations of QECCs in IBM Q Experience

What quantum channels are considered in quantum communication, and how does this choice affect the construction of error correction codes?

Collective measurements: importance and realization

$T_2>2T_1$ qubits on the ibm_washington quantum processor

Quantum capacity for serial composition of quantum channels

Confusion on the definition of the phase-damping channel

Quantum Algorithm for MIMO ML detection

EA-Turbo simulation package

Quantum Belief Propagation decoding

Does the no-cloning theorem impose limits on the capabilities of quantum networks?

Real-life examples of classical-quantum channels

Why is the quantum Fisher information $J_f=[f(\frac43-f)]^{-1}$ for maximally entangled qubit pairs?

Stabilizer circuit synthesis via Clifford gates

Qubit dephasing times

Does proving $Q^{(1)}(\mathcal{N}\otimes\mathcal{N})=Q^{(1)}(\mathcal{N})+Q^{(1)}(\mathcal{N})$ imply additivity for arbitrary $n$?

Clarifying the relationship of the probabilities of depolarizing channel and relaxation/dephasing times

What is the quantum capacity of the combined amplitude and phase damping channel?

How do you implement a negative controlled gate using the regular controlled gate?

Experimental Realization of Superactivation of Quantum Capacity

What are Tensor Networks and which is the relationship they have with quantum computing?