User MonteNero

15 votes

1 answer

491 views

Status of Google's quantum supremacy claim 2022

asked Aug 20, 2022 at 23:36

8 votes

3 answers

1k views

What is the difference between Error Mitigation (EM) and Quantum Error Correction (QEC)?

asked Jul 20, 2022 at 2:32

8 votes

1 answer

544 views

Parametrization of a two-qubit state

asked Feb 24 at 3:27

5 votes

2 answers

190 views

Under what conditions the minimum eigengap is non-zero?

asked Jul 11, 2022 at 21:42

5 votes

2 answers

414 views

Role of entanglement in a VQE ansatz for combinatorial problems

asked May 20, 2021 at 22:44

4 votes

3 answers

570 views

Are there qudit systems, and why are they not as popular as qubit systems?

asked Aug 12, 2022 at 21:25

4 votes

0 answers

59 views

When is a quantum algorithm considered to have a significantly superior performance over another quantum algorithm?

asked May 12 at 22:53

4 votes

0 answers

55 views

Distribution of density operators under Stochastic Master Equation

asked Jan 3 at 18:19

3 votes

2 answers

537 views

Solving Hamiltonian eigenvalue problem

asked May 12, 2022 at 5:46

3 votes

2 answers

305 views

How to show that a sum of Pauli operators is non-zero?

asked Aug 10, 2022 at 20:41

2 votes

1 answer

111 views

High level implementation of quantum oracles

asked Jul 28, 2022 at 23:24

2 votes

3 answers

401 views

Definitions of a quantum circuit's depth and connectivity

asked Jun 9, 2022 at 2:23

2 votes

2 answers

226 views

How to find a circuit for a unitary operator $e^{-i s |v \rangle \langle v| t }$?

asked Sep 9, 2022 at 17:50

2 votes

1 answer

379 views

Nielsen and Chuang: Solving equation of motion for amplitude damping

asked Nov 24, 2022 at 23:05

2 votes

2 answers

154 views

Can we always simultaneously diagonalize $H_A \otimes \mathbb{1}$ and $\mathbb{1} \otimes H_B$?

asked Jan 5 at 23:26

2 votes

1 answer

101 views

Notation for Lindblad operators

asked Jan 6 at 4:08

2 votes

2 answers

146 views

What is the analog of the CNOT gate in an arbitrary basis?

asked Feb 8 at 23:02

2 votes

0 answers

44 views

Coherent information is a lower bound of channel capacity. What about coherent information based on Renyi entropies?

asked Sep 14 at 0:34

2 votes

1 answer

48 views

Change of basis on a per vector component level

asked Jun 19 at 6:02

2 votes

3 answers

145 views

Finding the rotation angle $\theta$ of a 2x2 unitary matrix

asked Jun 27 at 17:02

2 votes

1 answer

40 views

Can a Hamiltonian of a tripartite system map an product state into a product state?

asked May 3 at 8:11

1 vote

0 answers

39 views

List of inequalities for purity of a traced out bipartite system

asked Mar 26 at 23:39

1 vote

1 answer

55 views

Efficiently simulating a BQP circuit and polynomial hierachy collapse

asked Jul 17 at 23:01

1 vote

1 answer

86 views

How to reconstruct the density matrix $\rho$ from the overlap matrix $T_{a,a'}={\rm Tr}(M^{(a)}M^{(a')})$?

asked May 31 at 20:19

1 vote

2 answers

200 views

Conversion error: from a QISKIT circuit to a QASM string and back

asked Dec 8, 2022 at 19:26

1 vote

2 answers

91 views

How to simplify sequence of gates in QASM file?

asked Dec 15, 2022 at 18:22

1 vote

2 answers

109 views

How to check if a mapping is unitary?

asked Nov 8, 2022 at 23:56

1 vote

0 answers

39 views

Error analysis on the approximation of an adiabatic evolution operator by a QAOA circuit

asked Jun 24, 2022 at 5:02

0 votes

2 answers

455 views

Qiskit ERROR: Circuit contains invalid instructions

asked Nov 18, 2022 at 1:10

Stack Exchange Network

29 Questions

Status of Google's quantum supremacy claim 2022

What is the difference between Error Mitigation (EM) and Quantum Error Correction (QEC)?

Parametrization of a two-qubit state

Under what conditions the minimum eigengap is non-zero?

Role of entanglement in a VQE ansatz for combinatorial problems

Are there qudit systems, and why are they not as popular as qubit systems?

When is a quantum algorithm considered to have a significantly superior performance over another quantum algorithm?

Distribution of density operators under Stochastic Master Equation

Solving Hamiltonian eigenvalue problem

How to show that a sum of Pauli operators is non-zero?

High level implementation of quantum oracles

Definitions of a quantum circuit's depth and connectivity

How to find a circuit for a unitary operator $e^{-i s |v \rangle \langle v| t }$?

Nielsen and Chuang: Solving equation of motion for amplitude damping

Can we always simultaneously diagonalize $H_A \otimes \mathbb{1}$ and $\mathbb{1} \otimes H_B$?

Notation for Lindblad operators

What is the analog of the CNOT gate in an arbitrary basis?

Coherent information is a lower bound of channel capacity. What about coherent information based on Renyi entropies?

Change of basis on a per vector component level

Finding the rotation angle $\theta$ of a 2x2 unitary matrix

Can a Hamiltonian of a tripartite system map an product state into a product state?

List of inequalities for purity of a traced out bipartite system

Efficiently simulating a BQP circuit and polynomial hierachy collapse

How to reconstruct the density matrix $\rho$ from the overlap matrix $T_{a,a'}={\rm Tr}(M^{(a)}M^{(a')})$?

Conversion error: from a QISKIT circuit to a QASM string and back

How to simplify sequence of gates in QASM file?

How to check if a mapping is unitary?

Error analysis on the approximation of an adiabatic evolution operator by a QAOA circuit

Qiskit ERROR: Circuit contains invalid instructions