Unanswered Questions
426 questions with no upvoted or accepted answers
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How to use Qiskit translation pass manager with Clifford + T gate basis?
Context
In qiskit, the translation stage of the transpilation "translates (or unrolls) the gates specified in a circuit to the native basis gates of a specified backend." (cf doc)
For that, ...
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44
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Operation 'sx' is not defined for this system
Any one knows how to resolve the below error:Operation 'sx' is not defined for this system. The below code works really well with ...
- 219
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14
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Periodic electric field link operator in QuSpin
I am trying to implement a truncated bosonic Hilbert space as described in Eqs. (15) and (16) of this paper on simulating the Schwinger model. However, I am unable to implement the "periodic ...
- 11
1
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What is the difference between `HighLevelSynthesis` and `UnrollCustomDefinitions` qiskit transpilation passes?
The doc for UnrollCustomDefinitions indicates :
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- 41
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34
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I have trouble using the alternatives for some commands in older versions of qiskit
I have a code that calculates the transition amplitute between and using the ZZFeatureMap with 4 repetitions and default data mapping function. Use the qasm_simulator with shots = 8192, seed_simulator ...
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Custom Feature Map Error for VQR in Qiskit 'Input data has incorrect shape, last dimension is not equal to the number of inputs'
I am trying to use a VQR for solving a regression problem. My data has 5 features, I want to use 4 features to estimate 5th one. I made it work with ZFeatureMap but now I want to create my own feature ...
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1
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How to get historical calibration data for mthree (M3) from IBM Quantum devices?
I'm using mthree in Batch mode. A batch needs to be queued before it can be executed. The time when a batch was executed can be obtained from the IBM Quantum Platform site, so I would like to obtain ...
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How to learn mathematics and physics for quantum computing
I am currently pursuing my bachelor's in computer science (AI). I am very passionate and curious about quantum technologies, particularly quantum information theory, and quantum computing, and I want ...
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41
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Quantum register for variable store - how to encode operations?
Suppose I have a lot of classic variables of a certain number of bits in size, say, 8 bits. Instead of starting each variable from zero in superposition, I want to use the exponential space to encode ...
- 171
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31
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Discarding a Quantum register to extract kernel matrix in practical quantum computer
Question: How to extract a kernel matrix from a quantum state on a real quantum computer through discarding a register?
I am trying to understand the paper "Quantum Support Vector Machine for Big ...
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28
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Reference recommendation for research in quantum algorithm and quantum machine learning?
I have finished reading Nielson and Chuang and am interested in doing research in quantum algorithm and quantum machine learning. Are there any references that introduce these topics at research level?...
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54
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Usage of custom passes during transpilation
I am reading a lot about custom passes in the qiskit like
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61
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Cannot Find referance DeutschJozsa in __init__.py
I am new to quantum computing and Python. I tried to make a quantum simulation with qiskit, but I have some import issues that I can't solve, and I decided to ask it here.
I tried to import ...
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37
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How to generate random quantum states in matlab?
I was wondering if there is some academic standard/any way of generating random n times n q-states/density matrices in Matlab without using any other package then QETLAB.
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4
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Is gate optimization of superconducting qubits really a reinforcement learning problem?
There has in several scientific articles related to designing gates for superconducting qubits, been proposed to use reinforcement learning to design pulses with high fidelity and short duration.
Some ...
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