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0

votes

0

answers

20

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How to correct a phase error of the form $e^{ix}$

error-correction

modified 2 hours ago virattara 65

1

vote

2

answers

61

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What is the matrix representation of the Hadamard gate in the computational basis?

quantum-gate hadamard

modified 7 hours ago Condo 376

0

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2

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38

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Custom Gate/Instruction with classical bits in Qiskit

qiskit programming

answered 12 hours ago tsgeorgios 76

4

votes

2

answers

33

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Bell state preparation

quantum-gate quantum-state tensor-product bell-basis

modified 13 hours ago Martin Vesely 5,763

2

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0

answers

19

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What is the best way to use loop statements on a quantum computer?

programming ibm-q-experience classical-computing

modified 10 hours ago Glorfindel 500

0

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1

answer

22

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What is the convention of indices for the one and two-body integrals in qiskit

qiskit chemistry

answered 16 hours ago C. Kang 1,025

0

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1

answer

29

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How can I use the quantum volume to design the scale of my experiment?

qiskit ibm-q-experience hhl-algorithm quantum-volume

answered 13 hours ago Markus Heinrich 265

1

vote

1

answer

35

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Quadratic optimization in Qiskit: Error when QuadraticProgram with quadratic constraint converted to QUBO

qiskit ibm-q-experience optimization

modified 20 hours ago Glorfindel 500

2

votes

1

answer

49

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How can I convert the unitary matrix $e^\frac{i\pi}{2}$ into a quantum circuit in Qiskit?

quantum-gate qiskit circuit-construction unitarity

modified yesterday glS 11k

2

votes

1

answer

32

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CNOT expressed with CZ and H gates by taking into account HZH =X

quantum-gate gate-synthesis pauli-gates

modified yesterday Davit Khachatryan 2,893

3

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0

answers

53

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What is the thought process for circuit making after seeing input and output of a matrix?

quantum-gate circuit-construction textbook-and-exercises

modified 12 hours ago Glorfindel 500

1

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1

answer

44

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Hadamard gate for three qubits; inconsistency between IBM and Matlab

qiskit matrix-representation unitarity hadamard

answered yesterday LOC 41

0

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1

answer

37

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How to get state vector from QasmSimulator in Qiskit

qiskit programming

modified yesterday glS 11k

0

votes

1

answer

18

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Implementing Partial Trace in IBMs quantum computer

decoherence partial-trace

answered yesterday Aditya Giridharan 364

3

votes

0

answers

15

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Reducing the depth of quantum circuits with ancilla qubits

circuit-construction gate-synthesis quantum

asked yesterday nippon 1,272

2

votes

1

answer

39

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Why running time of qasm simulator is significantly smaller in comparison with quantum machines?

programming ibm-q-experience simulation qasm

modified yesterday glS 11k

2

votes

1

answer

41

views

My IBMQ job hangs forever?

qiskit ibm-q-experience

modified yesterday luciano 354

3

votes

0

answers

29

views

Is there a measurable of entanglement for a macroscopic system?

entanglement experiment solid-state

modified 21 hours ago user157879 288

0

votes

1

answer

22

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Where does errors occur during error syndrome and recovery?

error-correction nielsen-and-chuang fault-tolerance

answered yesterday DaftWullie 32.5k

-1

votes

3

answers

85

views

Google Colab - ImportError: The class MatplotlibDrawer needs pylatexenc

quantum-gate quantum-state qiskit circuit-construction

modified 9 hours ago Oussama Rizwi 3

0

votes

1

answer

12

views

Implementing Cirq Coding Gates

quantum-gate circuit-construction entanglement cirq contextuality

modified yesterday Craig Gidney 9,850

1

vote

1

answer

27

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What is meaning of 'up to a global phase'? [duplicate]

quantum-state textbook-and-exercises

modified 2 days ago Martin Vesely 5,763

3

votes

1

answer

98

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How to implement linear combination of two unitary gates in a quantum circuit?

quantum-gate algorithm circuit-construction

modified 2 days ago DaftWullie 32.5k

2

votes

2

answers

135

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Question regarding soundness bound in QMA versus QCMA separation

algorithm complexity-theory inequality

modified 9 hours ago glS 11k

2

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1

answer

54

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Test equivalence of circuits exactly on qiskit

qiskit programming circuit-construction

modified 10 hours ago glS 11k

0

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2

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125

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How to initialise a qubit in the state $\frac{1}{\sqrt2}(|0\rangle+|1\rangle)$ in qiskit?

qiskit programming

modified 9 hours ago glS 11k

-2

votes

0

answers

33

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Secret string in least significant bit with Simon algorithm

algorithm textbook-and-exercises simons-algorithm

modified 10 hours ago glS 11k

1

vote

2

answers

72

views

Running Google Cirq example code from their webpage — where do I find information about PROCESSOR_ID?

programming cirq

modified 9 hours ago glS 11k

1

vote

2

answers

30

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What is the significance of transpiling time, validating time, in queue time and running time?

ibm-q-experience

modified 2 days ago Martin Vesely 5,763

1

vote

1

answer

41

views

Counting Achievable Operations

quantum-gate classical-quantum

answered Sep 15 at 15:56 C. Kang 1,025

0

votes

1

answer

45

views

How to code a projector operator in qiskit?

qiskit programming quantum-operation gate-synthesis projection-operator

answered yesterday Winona 90

1

vote

1

answer

29

views

Is there a way to generate random circuits in qiskit with only certain allowed gates?

qiskit programming circuit-construction

modified 10 hours ago glS 11k

0

votes

1

answer

54

views

What would be measured if you measure two entangled qubits at exactly the same time?

entanglement measurement

modified Sep 15 at 12:33 glS 11k

0

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0

answers

45

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Please explain this definition in an article about quantum error correction

error-correction fault-tolerance

modified Sep 15 at 12:34 Glorfindel 500

-1

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1

answer

85

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Implementing a circuit that returns $|01\rangle$ and $|10\rangle$ with equal probability

quantum-gate programming circuit-construction optimization random-quantum-circuit

modified Sep 15 at 16:13 glS 11k

2

votes

1

answer

37

views

Is it required to input full matrix when using Qiskit HHL algorithm for sparse matrices?

qiskit hhl-algorithm

answered Sep 15 at 15:53 user96233 126

1

vote

1

answer

38

views

Quantum Circuit Optimization with Machine Learning

quantum-gate circuit-construction machine-learning optimization qaoa

modified Sep 15 at 12:32 glS 11k

2

votes

2

answers

50

views

Having trouble finding angles for Bloch vector

qiskit mathematics textbook-and-exercises

modified 9 hours ago glS 11k

1

vote

2

answers

35

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How to execute many circuits on an IBMQ backend?

qiskit programming ibm-q-experience

modified 9 hours ago glS 11k

1

vote

2

answers

51

views

quantum random number generator implementation in quantum lab

qiskit ibm-q-experience

modified 13 hours ago Martin Vesely 5,763

3

votes

2

answers

47

views

Can Alice and Bob distinguish entangled state coefficients?

quantum-state entanglement measurement density-matrix

answered 2 days ago DaftWullie 32.5k

1

vote

0

answers

42

views

Give an explicit derivation of the formula for the two-qubit absolute separability Hilbert-Schmidt probability $\approx 0.00365826$

quantum-information entanglement mathematics density-matrix

asked Sep 15 at 0:47 Paul B. Slater 651

1

vote

0

answers

33

views

Deformation of the Bloch sphere and contraction of its planes under the action of channels

quantum-operation nielsen-and-chuang bloch-sphere

modified Sep 15 at 16:15 glS 11k

1

vote

1

answer

46

views

Obtaining hermitian matrix using Knill and Laflamme condition?

mathematics error-correction

modified Sep 14 at 21:24 JSdJ 2,348

3

votes

1

answer

28

views

How to understand intuitively the quantum gate phase kickback?

quantum-gate phase-kickback

modified 9 hours ago glS 11k

1

vote

1

answer

53

views

Question on output of SWAP test

algorithm quantum-state

modified Sep 14 at 9:13 DaftWullie 32.5k

0

votes

0

answers

82

views

Can one use a quantum circuit as a pathfinding algorithm?

algorithm qiskit circuit-construction grovers-algorithm

modified Sep 14 at 0:52 skubis17 11

-1

votes

1

answer

49

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Least significant bit with Simon algorithm

algorithm textbook-and-exercises

modified Sep 15 at 12:31 glS 11k

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