All Questions
Tagged with python or programming
1,751 questions
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Is it useful to define a simple hardware-neutral data format for quantum optimization?
I’m new here.
I’ve been experimenting with quantum-inspired optimization and created a very simple, hardware-neutral data format (JSON) to describe optimization inputs and parameters before they are ...
1
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1
answer
100
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Drawbacks of writing a compiler in Smalltalk
Sorry for the vague title, what I’m really asking is: when writing a compiler for a quantum DSL, many languages have chosen an imperative or functional host language. Few, if any, have chosen a purely ...
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1
answer
153
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Converting qubit eigenstate to pyscf eigenstate
I want to convert a PySCF wavefunction in terms of CIstrings to a representation of a qubit state after Jordan-Wigner transformation of the Hamiltonian.
Qiskit-nature keeps the molecular ordering of ...
- 87
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1
answer
64
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Unable to generate parity check matrices with generator matrices for CSS-T Code
In this paper, the authors provide a method for constructing qLDPC CSS-T codes. They provide example generator matrices for the binary linear codes $C_1$ and $C_2$ such that $Q(C_1, C_2)$ is a CSS-T ...
- 321
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57
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Qiskit Sampler job failed?
Im making a quantum SVM with the quantum kernel using qiskit. Right now, im trying to implement the noise model using the fake provider.
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1
answer
53
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Limits of Hamiltonian Simulation on current IBM devices
I'm trying to simulate the 1D Ising Model with open periodic boundary conditions using the 2nd order Trotter product for 5 spins sites with J = -1.2 and h =-0.7.
$$ H_{Ising} = -J\sum_{i=0}^{spinsites ...
- 82
4
votes
2
answers
166
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Stim: What is a good workflow for adding non-trivial detectors?
I have been using Stim for a while now. Still, I find it particularly difficult to add non-trivial detectors in Stim (such as the in-place access of the Y-Basis Gidney introduced), and I’m wondering ...
- 324
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85
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Signal processing operator implementation with quantum circuit
In the paper "Grand Unification of Quantum Algorithms", the following operator is introduced in eqn. (27) of said paper:
$$\hat{\Pi }_{\phi } = e^{i\phi (2\hat{\Pi }-\hat{I})}$$
The operator ...
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1
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1
answer
133
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Calculation of error probability in detector error model
I'm working with Stim to analyze error probabilities in quantum error correction circuits, and I'm encountering a confusing aspect regarding the DetectorErrorModel (DEM) output.
Consider Steane code ...
- 89
2
votes
1
answer
67
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Qiskit IBM Runtime: least_busy() raises QiskitBackendNotFoundError even though backends are listed
I’m trying to connect to IBM Quantum backends using Qiskit Runtime Service.
Here’s my code (based on IBM Cloud setup guide):
...
- 21
2
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51
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Unexpected behavior of Qiskit IntegerComparator
I have two problems with the Qiskit IntegerComparator: I apply a comparison of a quantum register content with a classical integer in Qiskit and look at the ...
- 87
4
votes
1
answer
86
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What resources/ set of resources will fully cover the content tested for IBM Qiskit v2.X Developer Certification?
Under the IBM Qiskit v2.X Developer Certification webpage, there are a few courses and resources listed (e.g. the 5 course series from IBM). However, do they fully cover the content tested in the ...
- 41
2
votes
2
answers
69
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Converting numpy array representing Choi matrix to Kraus operators in QuTip
I want to convert a Choi matrix into a corresponding set of Kraus operators.
I start out from a numpy array representing the Choi matrix. I convert it to a QuTip Qobj object and then convert it to ...
- 87
2
votes
2
answers
411
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Computing basic unit of information in quantum computers
In digital computer, 0 and 1 is the basic unit of information in memory, that gets processed.
Digital computer(having transistors) uses Boolean algebra to process this basic unit of information, where ...
- 129
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85
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Issue installing Chromobius package
I am trying to install the Chromobius package with the implementation of the Mobius decoder for colour codes. However, I am getting an error in the form of "ERROR: Failed building wheel for ...
