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Top Questions

3 votes
2 answers
107 views

Converting $T_1$ and $T_2$ decay rates to noise supported by stim

3 votes
1 answer
74 views

Which gate based quantum computer is the best? [closed]

1 vote
1 answer
92 views

stim : How to create a circuit like qiskit's c_if

1 vote
2 answers
55 views

How to implement Hamiltonian $0.01Z$?

4 votes
2 answers
67 views

Simultaneous measurements and Bell basis measurements to estimate $\lvert\text{Tr}(\sigma \rho)\rvert^2$ in Huang et al. paper

3 votes
1 answer
67 views

Classes of quantum circuits that can be "efficiently" simulated

3 votes
2 answers
53 views

Why is rz gate error not exactly zero in IBMQ washington device?

2 votes
1 answer
48 views

Grover, CCZ Gate on IBM Quantum Lab & unexpected outputs

2 votes
1 answer
72 views

How many gates can I put on a 27 qubit quantum computer

1 vote
1 answer
54 views

Classical register implementation in Amazon Braket

2 votes
1 answer
53 views

Solution to Nielsen & Chuang Exercise 5.3 (FFT)

2 votes
1 answer
41 views

Question regarding the monotonicity of Mutual Information of a tripartite state under multiple non-local commuting unitaries

3 votes
1 answer
40 views

Are MUBs complex projective 3-designs?

2 votes
1 answer
50 views

Why is the Qiskit transpiler not resolving the equivalence $I = R_y(-\theta) R_y(\theta)$?

5 votes
1 answer
64 views

Why is error correction very different for circuits compared to channels?

3 votes
1 answer
62 views

Is Qiskit transpile function (with basis_gates=['u', 'cx']) universal?

1 vote
1 answer
77 views

The physical realisation of a quantum oracle [duplicate]

2 votes
1 answer
45 views

traveling salesman output from qiskit docs

2 votes
2 answers
53 views

Finding the polar and azimuthal angles of the Bloch vector corresponding to $\frac1{\sqrt2}(1-i)|0\rangle-\frac i{\sqrt2}|1\rangle$ [duplicate]

0 votes
0 answers
62 views

Conditions for Fault-tolerant QC to work better than not doing any EC (except the ideal decoder)

-3 votes
0 answers
60 views

How to compute a divide operation and add it to initialize function [closed]

2 votes
1 answer
46 views

Computing a ratio involving Haar random unitaries

1 vote
1 answer
43 views

What is the expectation value for the ground state of $ H = \sum_i Z_i Z_{i+1} + \sum_i X_i $?

0 votes
1 answer
32 views

Is there a state vector simulator written in pure python?

3 votes
0 answers
51 views

Is it ever beneficial to communicate qubits that aren't EPR pairs?

1 vote
0 answers
49 views

pennylane: How to carry out MB rotation without CB rotation?

1 vote
3 answers
29 views

How to get exact measurement probabilities when having intermediate measurements with Qiskit?

3 votes
2 answers
28 views

Are there open source implementations of quantum error correction decoders?

1 vote
2 answers
26 views

Problem adding two numbers in a quantum computer with Drapper's algorithm

0 votes
1 answer
33 views

Do detection events mean temporal and spatial coordinates?

1 vote
0 answers
40 views

Open source color code decoder

3 votes
0 answers
40 views

Quantum entanglement as topological entanglement

1 vote
1 answer
26 views

Problem with qiskit only accepting ${\rm tr}(\rho^2)=1.$ while performing state tomography

1 vote
1 answer
26 views

IBM Quantum Computing Pulse Control

-2 votes
0 answers
33 views

Error for COBYLA

0 votes
1 answer
24 views

Why does the single-shot error correction with 3D gauge color codes save qubits or times?

2 votes
0 answers
30 views

Custom Mixer for QAOA for Graph Coloring, where to start?

0 votes
1 answer
30 views

How to extract resulting qubit states from a circuit after one round of computation?

0 votes
0 answers
26 views

Topmost Universal Gate Based Quantum Simulator?

0 votes
0 answers
23 views

Unexpected behavior of qiskit runtime estimator

1 vote
0 answers
23 views

Block encoding for a sum of Pauli terms

0 votes
1 answer
21 views

Stim: Surface code with manipulated data qubits

1 vote
0 answers
20 views

is it possible to use STIM for non-clifford circuits?

0 votes
0 answers
19 views

why entanglement of an Antiferromagnetism case decreases in presence of a nonuniform magnetic field?

0 votes
0 answers
19 views

How to install qiskit-research in IBM quantum lab?

0 votes
1 answer
19 views

Basic import problem for qiskit_experiments module, how to fix?

1 vote
0 answers
15 views

How to calculate the Pauli Noise model of a physical gate operation?

0 votes
1 answer
14 views

Pymatching decoder version in sinter package


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