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1

vote

2

answers

14

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Module BasicAer not found

programming qiskit

answered 47 mins ago Holger 11

3

votes

1

answer

19

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Generalizing quantum teleportation for qudits

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answered 4 hours ago DaftWullie 11.6k

3

votes

0

answers

22

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Clock matrix vs matrix clock

quantum-gate mathematics matrix-representation

modified 10 hours ago Blue♦ 5,645

2

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0

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12

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What does teleportation have to do w/ XOR linked lists?

cryptography teleportation

modified 10 hours ago Blue♦ 5,645

3

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2

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51

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Shannon entropy is least when Measurement basis = Mixture basis

qubit quantum-information entropy

modified 5 hours ago Blue♦ 5,645

1

vote

1

answer

30

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Multiple random coin flips without measurements

algorithm quantum-gate circuit-model

answered 15 hours ago ahelwer 1,250

2

votes

1

answer

26

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Partial Trace over a complicated looking state

quantum-information mathematics nielsen-and-chuang

answered yesterday DaftWullie 11.6k

2

votes

1

answer

51

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Why can't you run a teleportation circuit on an IBM Q device?

qiskit ibm-q-experience teleportation

answered yesterday Nillmer 80

1

vote

1

answer

59

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Depolarizing channel operator sum representation

quantum-information quantum-channel

modified yesterday Norbert Schuch 1,213

2

votes

1

answer

92

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Are there emulators for quantum networks?

resource-request simulation quantum-networks emulation

modified yesterday meowzz 1,242

3

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0

answers

45

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How do I build a gate from a matrix on Qiskit?

quantum-gate qiskit gate-synthesis

modified yesterday Blue♦ 5,645

4

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2

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73

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Grover's algorithm with W-state

algorithm entanglement grovers-algorithm

modified 2 days ago tigerjack89 205

1

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2

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553

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Measuring but not looking at the result

measurement density-matrix decoherence

modified Dec 14 at 12:02 Blue♦ 5,645

2

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1

answer

49

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Print circuit compiled on hardware?

programming qiskit ibm-q-experience qasm

modified 2 days ago Jan Balewski 14

3

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2

answers

54

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How to fix? 'E1101:Instance of 'QuantumCircuit' has no 'h' member' and 'E1101:Instance of 'QuantumCircuit' has no 'cx' member'

programming qiskit

answered Dec 15 at 10:59 Norrius 292

2

votes

1

answer

38

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How to formulate the master equation for three systems?

quantum-information open-quantum-systems

answered Dec 14 at 8:11 DaftWullie 11.6k

2

votes

1

answer

36

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Understanding why the modular function part of Shor's algorithm is unitary

algorithm shors-algorithm unitarity

answered Dec 14 at 13:05 DaftWullie 11.6k

1

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1

answer

50

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Building a matrix corresponding to the teleportation circuit

algorithm quantum-gate quirk teleportation

modified Dec 13 at 21:44 ahelwer 1,250

4

votes

1

answer

47

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Expected repetitions of the quantum part of Shor's algorithm

algorithm shors-algorithm

modified Dec 13 at 23:02 Craig Gidney 3,342

1

vote

1

answer

37

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Proof of no-cloning

quantum-state tensor-product no-cloning-theorem

modified Dec 13 at 20:40 Blue♦ 5,645

8

votes

1

answer

139

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Isomorphism between the Clifford group and the quaternions

clifford-group

modified Dec 12 at 10:10 Carucel 115

2

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1

answer

60

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qiskit - Is there any way to discard the results of a measurement?

circuit-model programming measurement qiskit

modified 2 days ago James Wootton 6,000

5

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1

answer

181

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Problem with the mathematical formulation of “qubitization”

mathematics hamiltonian-simulation notation

modified Dec 11 at 13:33 Nelimee 1,270

2

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1

answer

206

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Is it possible to expand/merge different circuits?

programming qiskit ibm-q-experience

modified Dec 10 at 4:18 Blue♦ 5,645

2

votes

1

answer

36

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CNOT gate - control qubit is in superposition

quantum-gate qubit controlled-gates

modified Dec 13 at 21:28 Blue♦ 5,645

2

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0

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117

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Eigenvalues of CPT operator

resource-request cpt-symmetry

modified Dec 14 at 6:15 Blue♦ 5,645

3

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2

answers

64

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Time-bin encoding qudits

resource-request qudit photonics

answered Dec 11 at 10:26 glS 3,546

18

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4

answers

2k

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Why can't there be an error correcting code with fewer than 5 qubits?

error-correction

modified Dec 1 at 16:14 Niel de Beaudrap 5,346

1

vote

1

answer

49

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Multiple random coin flips

algorithm

answered Dec 11 at 9:33 DaftWullie 11.6k

5

votes

1

answer

43

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Proof on approximating adiabatic evolution by quantum circuit

adiabatic-model

modified Dec 10 at 9:47 DaftWullie 11.6k

2

votes

1

answer

41

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Measuring order ancilla qubits in surface code

error-correction measurement surface-code

modified Dec 13 at 20:39 Blue♦ 5,645

6

votes

1

answer

95

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Why is this implementation of the order finding algorithm not working?

algorithm shors-algorithm cirq

modified Dec 13 at 16:08 Blue♦ 5,645

118

votes

14

answers

26k

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Is quantum computing just pie in the sky?

classical-computing applications history

modified Dec 14 at 5:47 Blue♦ 5,645

4

votes

2

answers

69

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How to get all combinations of given input?

algorithm circuit-model

answered Dec 7 at 19:46 Craig Gidney 3,342

3

votes

2

answers

188

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Are projective measurement bases always orthonormal?

measurement

answered Dec 3 at 19:04 glS 3,546

2

votes

0

answers

20

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Speedup Prange ISD using Grover

algorithm grovers-algorithm

modified Dec 10 at 3:36 Blue♦ 5,645

7

votes

0

answers

90

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Quantum algorithms for problems outside NP

algorithm speedup complexity-theory

modified Dec 7 at 22:20 Daniel Mahler 136

5

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3

answers

133

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Density matrix after measurement on density matrix

quantum-information measurement cryptography density-matrix

answered Dec 1 at 11:58 DaftWullie 11.6k

4

votes

1

answer

46

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Implementation of inverse QFT?

algorithm circuit-model quantum-fourier-transform

modified Dec 6 at 8:13 Blue♦ 5,645

6

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3

answers

284

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Why is the state of multiple qubits given by their tensor product?

qubit qubit-state tensor-product

modified Dec 14 at 6:29 Blue♦ 5,645

1

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2

answers

61

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A question about notation for quantum states

quantum-state notation

modified Dec 6 at 7:54 Blue♦ 5,645

2

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2

answers

85

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Non-layperson explanation of why a qubit is more useful than a bit?

qubit qubit-state resource-request

modified Dec 6 at 8:22 Blue♦ 5,645

4

votes

1

answer

71

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Construction of ${R_n(\theta)}$ using only the Hadamard and ${\pi/8}$ gates

quantum-gate nielsen-and-chuang

modified Dec 4 at 17:24 Blue♦ 5,645

3

votes

1

answer

35

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How many Kraus operators are required to characterise a channel with different start and end dimensions?

quantum-information quantum-channel

answered Dec 6 at 20:34 AHusain 1,352

3

votes

1

answer

31

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How are nonlocal games used in device-independent quantum cryptography?

cryptography nonlocal-games

modified Dec 6 at 14:29 DaftWullie 11.6k

3

votes

1

answer

28

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Are the order finding and period finding algorithms the same thing?

algorithm

modified Dec 5 at 10:22 DaftWullie 11.6k

2

votes

1

answer

38

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Why are these circuits not producing the expected output?

circuit-model quantum-fourier-transform cirq quirk

modified Dec 6 at 8:14 Blue♦ 5,645

2

votes

1

answer

42

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Why are these circuits not producing the same output?

algorithm circuit-model quantum-fourier-transform cirq quirk

answered Dec 6 at 9:10 nippon 471

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