Quantum Computing Stack Exchange

1

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12

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Module BasicAer not found

programming qiskit

answered 36 mins ago Holger 11

9

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3

answers

1k

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What countries are leading this “Global Quantum Computing Race”?

physical-realization quantum-advantage

answered 2 hours ago Helene Lavoix Msc PhD Lond 1

3

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1

answer

18

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Generalizing quantum teleportation for qudits

teleportation

answered 4 hours ago DaftWullie 11.6k

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

2

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0

answers

9

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Solution enumeration algorithm?

algorithm

modified 6 hours ago Blue♦ 5,645

3

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0

answers

22

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Clock matrix vs matrix clock

quantum-gate mathematics matrix-representation

modified 9 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 9 hours ago Blue♦ 5,645

1

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1

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30

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Multiple random coin flips without measurements

algorithm quantum-gate circuit-model

answered 15 hours ago ahelwer 1,250

22

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2

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2k

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How does a quantum computer do basic math at the hardware level?

qubit architecture physical-realization superconducting-quantum-computing

modified 22 hours ago Blue♦ 5,645

2

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1

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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

14

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3

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2k

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What integers have been factored with Shor's algorithm?

shors-algorithm

modified yesterday Rajeev Misra 1

2

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1

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26

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Partial Trace over a complicated looking state

quantum-information mathematics nielsen-and-chuang

answered yesterday DaftWullie 11.6k

1

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1

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59

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Depolarizing channel operator sum representation

quantum-information quantum-channel

modified yesterday Norbert Schuch 1,213

2

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1

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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

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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

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

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

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

3

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2

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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

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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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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

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

16

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2

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231

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Blind Quantum Computing Generic Structure Variable Selection

modified Dec 14 at 6:36 Blue♦ 5,645

15

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1

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189

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Purpose of using Fidelity in Randomised Benchmarking

quantum-information randomised-benchmarking fidelity

modified Dec 14 at 6:36 Blue♦ 5,645

7

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1

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180

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Embedding classical information into norm of a quantum state

quantum-information qubit-state machine-learning

modified Dec 14 at 6:32 Blue♦ 5,645

5

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2

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203

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Only assuming the universe evolves according to a positive trace-preserving map, is there a proof that all subsystem evolution must be CPTP?

density-matrix decoherence dynamics open-quantum-systems

modified Dec 14 at 6:31 Blue♦ 5,645

3

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1

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216

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How can surreal maths be used in quantum computing? [closed]

mathematics

modified Dec 14 at 6:29 Blue♦ 5,645

4

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1

answer

156

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What kind of mathematics is common in quantum computing? [closed]

mathematics

modified Dec 14 at 6:29 Blue♦ 5,645

3

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2

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175

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What is the “CP” operation in the context of anti-particles? [closed]

cpt-symmetry

modified Dec 14 at 6:29 Blue♦ 5,645

6

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3

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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

6

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0

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143

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What can tensor networks mean for quantum computing?

quantum-advantage research tensor-networks

modified Dec 14 at 6:28 Blue♦ 5,645

0

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1

answer

98

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Is the computational basis for Hilbert space transfinite?

mathematics

modified Dec 14 at 6:26 Blue♦ 5,645

2

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0

answers

43

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Why does Fourier sampling allow to efficiently recover hidden subgroups?

algorithm quantum-fourier-transform fourier-sampling

modified Dec 14 at 6:23 Blue♦ 5,645

6

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1

answer

279

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What is D-Wave's “Pegasus” architecture?

architecture physical-realization d-wave chimera pegasus

modified Dec 14 at 6:22 Blue♦ 5,645

5

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4

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158

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Maximally mixed states for more than 1 qubit

entanglement density-matrix entropy

modified Dec 14 at 6:20 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

7

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1

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136

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In amplitude amplification, how are the amplitudes of qubits changed?

grovers-algorithm amplitude-amplification

modified Dec 14 at 6:12 Blue♦ 5,645

10

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1

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145

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What is the quantum circuit equivalent of a (delayed choice) quantum eraser?

algorithm quantum-gate circuit-model

modified Dec 14 at 6:10 Blue♦ 5,645

4

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1

answer

88

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Measuring ancillas in Shor's algorithm

measurement shors-algorithm

modified Dec 14 at 6:09 Blue♦ 5,645

11

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1

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126

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Is there any general statement about what kinds of problems can be approximated more efficiently using a quantum computer?

algorithm complexity-theory optimization

modified Dec 14 at 6:09 Blue♦ 5,645

7

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1

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117

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Are correlations stronger than those allowed by quantum mechanics possible?

quantum-information quantum-correlation nonlocal-games foundations

modified Dec 14 at 6:08 Blue♦ 5,645

14

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1

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103

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How does magic state distillation overhead scale compare to quantum advantages?

error-correction speedup state-distillation state-injection-model

modified Dec 14 at 6:04 Blue♦ 5,645

5

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2

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173

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What exactly are “quantum rotors”?

resource-request models

modified Dec 14 at 6:00 Blue♦ 5,645

12

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1

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341

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What is the use of Categorical quantum mechanics?

quantum-information foundations

modified Dec 14 at 5:59 Blue♦ 5,645

11

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4

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1k

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Will deep learning neural networks run on quantum computers?

algorithm machine-learning neural-network

modified Dec 14 at 5:59 Blue♦ 5,645

6

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1

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131

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What are the implications of Bremermann's limit for quantum computing?

speedup

modified Dec 14 at 5:57 Blue♦ 5,645

5

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1

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78

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Relating min-entropy with conditional entropy

entanglement quantum-information entropy

modified Dec 14 at 5:56 Blue♦ 5,645

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