Quantum Computing Stack Exchange

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8

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What do you think about Bohmian Mechanics?

quantum-state

asked 3 hours ago guest 121

1

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0

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7

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Ansatz state for finding the lowest eigenvalue of a $2^n\times 2^n$ real matrix using VQE

asked 3 hours ago physavage 111

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0

answers

4

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Can pairwise correlations be converted into tripartite correlations?

entanglement correlations

asked 6 hours ago user1936752 709

1

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1

answer

22

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Any two level flip in $n$ qubit system

quantum-gate circuit-construction

modified 8 hours ago draks ... 111

1

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1

answer

16

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How can I implement an arbitrary quantum channel in a quantum circuit for real experiments using IBM quantum experience?

qiskit

answered 17 hours ago Arthur Pesah 98

11

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1

answer

170

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Devising “structured initial guesses” for random parametrized quantum circuits to avoid getting stuck in a flat plateau

optimization neural-network nisq

modified 19 hours ago Martin Vesely 3,613

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1

answer

26

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What is Ising Hamiltonian ? What its role in Portfolio Diversification?

qiskit resource-request optimization quantum-computing-for-finance

answered yesterday cnada 3,849

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1

answer

19

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Rotation of multi-body interaction in quantum circuit

algorithm circuit-construction simulation

answered yesterday DaftWullie 27.4k

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0

answers

27

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Shifting amplitude from one basis to another with a control qubit

quantum-gate no-cloning-theorem

modified yesterday psitae 915

3

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2

answers

49

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Qiskit unitary representation seems shifted

qiskit

answered yesterday cnada 3,849

3

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1

answer

22

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What does it look like to split an EPR pair?

quantum-state entanglement nielsen-and-chuang teleportation superdense-coding

answered yesterday DaftWullie 27.4k

0

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1

answer

14

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Error parameters from Qiskit backends

qiskit programming quantum-information ibm-q-experience noise

answered yesterday Matthew Stypulkoski 1,148

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0

answers

28

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Can't load account on IBM's qiskit

qiskit ibm-q-experience

modified yesterday José 101

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1

answer

36

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In the context of Quantum theory of Information, Typical eigenvectors are permutations of basis vectors. Why?

quantum-information

modified yesterday met927 1,815

3

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0

answers

40

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Matrix mod 2 multiplication

circuit-construction

modified yesterday mavzolej 337

1

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1

answer

16

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Why is the number of qubits linear in the inverse of epsilon in Quantum Phase Estimation?

circuit-construction phase-estimation

answered 2 days ago DaftWullie 27.4k

1

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0

answers

29

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How qubit phase is build in real hardware?

ibm-q-experience physical-realization physical-qubit d-wave

modified 2 days ago Martin Vesely 3,613

8

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0

answers

51

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Quantum algorithm for QR matrix decomposition?

algorithm

modified 2 days ago user3116936 81

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0

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20

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Repeating Quantum Phase Estimation algorithm

circuit-construction phase-estimation

asked 2 days ago g2i 77

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0

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40

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If one had a verifiable solution to P versus NP problem, how, and why, would one go about submitting it?

algorithm quantum-state quantum-information entanglement correlations

modified 2 days ago Charles Lawrence 1

1

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1

answer

43

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Does principle of deffered measurement imply information can travel faster than light?

circuit-construction teleportation

answered 2 days ago Mariia Mykhailova 4,718

2

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1

answer

51

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Holevo quantity and mutual information

quantum-state quantum-channel

answered 2 days ago The Yomster 21

4

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1

answer

70

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Represent a pure state in terms of 2 antipodal points on the Bloch sphere

quantum-state mathematics bloch-sphere

modified 2 days ago Davit Khachatryan 910

3

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1

answer

161

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Does Controlled-U gate entangle qubits?

quantum-gate quantum-state quantum-information quantum-operation

answered 2 days ago DaftWullie 27.4k

3

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1

answer

47

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$H = e^{i\pi/4} \sqrt{iNOT}$?

quantum-gate physical-realization hadamard

answered 2 days ago DaftWullie 27.4k

1

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1

answer

48

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I made a simple circuit on qiskit,but I have some question on this result

programming circuit-construction ibm-q-experience

modified 2 days ago Martin Vesely 3,613

1

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0

answers

28

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Qiskit not installing properly on pyCharm CE

qiskit

modified Apr 7 at 5:42 Martin Vesely 3,613

1

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1

answer

64

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Trying to use matrices for Hadamard and Controlled Not gates

quantum-gate matrix-representation

modified Apr 6 at 21:27 Glorfindel 455

2

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1

answer

25

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QML: “Quantum Data loader” instead of QRAM?

algorithm machine-learning

answered Apr 6 at 19:57 cnada 3,849

3

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0

answers

27

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Decomposing Hamiltonian into qubit model representation

algorithm quantum-advantage vqe

asked Apr 6 at 17:05 WantToLearn 31

0

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1

answer

22

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Placement of quantum circuits

cirq

answered Apr 6 at 16:22 Craig Gidney 8,116

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2

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31

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How to perform operations like sin over Qiskit parameters

quantum-gate qiskit

answered Apr 6 at 16:11 Matthew Treinish 266

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1

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42

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Topological quantum computer and two dimensional materials

physical-realization topological-quantum-computing anyons

modified Apr 6 at 15:32 Emil Prodan 56

1

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0

answers

19

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What does the maximum of a Hamiltonian means (in a particular paper)?

machine-learning qaoa

modified Apr 6 at 13:39 nathan raynal 397

0

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1

answer

28

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Find local state and compute Bloch coordinates, like Quirk

quantum-state bloch-sphere quirk

modified Apr 6 at 11:35 Davit Khachatryan 910

2

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1

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35

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It two unitaries are delta apart in trace norm, then what is the trace norm of outputs states when the same input state is applied to two unitaries?

quantum-gate quantum-state quantum-information trace-distance

modified Apr 6 at 9:28 DaftWullie 27.4k

2

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1

answer

64

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Problem with controlled rotation in HHL

hhl-algorithm

answered Apr 6 at 9:16 DaftWullie 27.4k

3

votes

2

answers

36

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How to implement exponentiation of a gate without breaking complexity?

circuit-construction complexity-theory quantum-fourier-transform phase-estimation

answered Apr 6 at 7:59 DaftWullie 27.4k

1

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1

answer

25

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$\lambda$ parameter for U3 gate in qiskit Bloch sphere visualisation

qiskit bloch-sphere

answered Apr 6 at 7:55 DaftWullie 27.4k

1

vote

1

answer

38

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Need some help with Purity calculation

quantum-state density-matrix

answered Apr 6 at 7:41 DaftWullie 27.4k

1

vote

1

answer

28

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Qiskit - Z expectation value from counts?

qiskit measurement

modified Apr 5 at 16:56 Davit Khachatryan 910

8

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2

answers

248

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Circuit construction for Hamiltonian simulation

algorithm circuit-construction hamiltonian-simulation

modified Apr 5 at 8:37 Davit Khachatryan 910

0

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0

answers

26

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Finding minimum with Grover

algorithm programming grovers-algorithm quantum-operation

modified Apr 5 at 6:29 Martin Vesely 3,613

1

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0

answers

13

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How to get the $T1$ specs for the Rigetti's quantum processor (Aspen 7)

simulation rigetti pyquil

modified Apr 4 at 22:17 Martin Vesely 3,613

0

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1

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18

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Is there quantum error correction code package for python

error-correction qutip

answered Apr 4 at 21:31 met927 1,815

1

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2

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52

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Problem with commutation of $e^{-iH_1t}$ and $e^{-iH_2t}$, where $H_1$ commutes with $H_2$

hamiltonian-simulation quirk

answered Apr 4 at 18:31 Davit Khachatryan 910

4

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1

answer

49

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Quantum Computing Mailing Lists

resource-request research

answered Apr 4 at 17:09 Arthur Pesah 98

0

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0

answers

4

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Where does the energy going in a Power Rabi experiment with superconducting circuits?

experiment

asked Apr 4 at 16:52 Qexp 105

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