Questions tagged [ibm-quantum-devices]
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186 questions
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Mapping Layout for Qubits in Optimization Level = 0
I am currently running a job on a quantum computer. During the transpilation process, I set optimization_level=0 using the command: "tqc = transpile(qc, backend=backend, optimization_level=0)&...
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"Quantum coherence measurements on IBM hardware - what results are others achieving?"
I've been conducting systematic quantum coherence optimization experiments on IBM Brisbane and achieved some results I'd like to benchmark against community experience:
My experimental setup:
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How to use the calibration data for the qiskit simulator
I'd want to know how to apply a noise model to a quantum simulator using calibration data.
I used the calibration data provided by the IBM Quantum Machine, such as IBM Brisbane.
However, it seems that ...
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1
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How to execute the knapsack problem in cloud service of QC of IBM?
Someone could give a recomendation on how to execute the code show below - knapsack problem using QAOA algorithm, code avaliable on Qiskit documentation - in a quantum computing cloud service of IBM:
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How to improve noise on IBM hardware/qiskit
I'm trying to run a fairly simple circuit: Given a 4-qubit register and a 3-qubit register, count the number of 1s (i.e., Hamming weight) in the first register and store in the second. My attempts so ...
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IBM Qiskit not showing usage stats
I've executed QAOA using IBM Qiskit, in my IDE I successfully get an output,
...
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Why could my IBM Qiskit job successfully submit, but not show up on the dashboard and end after a few minutes terminates with a wage error?
I would like to submit the following job, and it does successfully so but after ~20 min. of waiting the error IBMRuntimeError: 'Failed to run program: "('Connection aborted.', ...
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Fake vs real IBM backends
I'm trying to run a relatively simple 'quantum adder' on fake and real backends.
The fake backends are giving the correct answer, the real backends are not.
I've verified the errors are similar and ...
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Does IBM Quantum provide a public schedule for QPU maintenance?
I'm using IBM Quantum for my quantum computing experiments and would like to know if IBM provides a publicly available schedule for QPU maintenance.
Is there an official page or API where users can ...
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85
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Alternative way to do pulse level control on IBM Quantum's devices
I used this code to execute pulse-level control on IBM Quantum's QPU, but it is not supported now (2025 Feb 18). What I did was more complex. This is just a minimal example code for reproducing the ...
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Factoring 30-bit Numbers with Qiskit and IBM Hardware: Is This Approach Unique? [closed]
I’ve been learning and exploring quantum computing concepts for over one to two years, but I’ve only started working practically with quantum hardware and Qiskit for about 30 days. Using IBM Quantum's ...
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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 ...
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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 ...
3
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1
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Qiskit - Parallelization of a quantum circuit
I have the following circuit, which is the implementation of a quantum oracle for a fuzzy inference engine:
As you can see this is composed of blocks, between barriers, which can be considered ...
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Issue with collecting state tomography data
I am having a problem with collecting state tomography data. When I am running the below code, I get the error: AttributeError: 'list' object has no attribute 'num_qubits'
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