Questions tagged [ibm-quantum-devices]
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Process Tomography and transpiler not running and eventually crashing kernel
I am running a Quantum Process Tomography on a circuit with a custom pulse added to a calibation for a CNOT gate.
Upon running the circuit, running it on the backend takes forever and eventually ends ...
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Gate fidelity reported in the ibm qcs
Simple question: for some retired ibm quantum computers (for instance lima), how was the gate fidelity measured? I know that they involved a kind of average fidelity, but I would like to know ...
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Can IBM Quantum hardware handle any CSWAP at all?
I am designing quantum algorithms where the quantum circuit uses CSWAP gates a lot. The result is very noisy on the quantum hardwares. So I designed really simple circuits to test whether it is indeed ...
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Retrieve old jobs from IBM qcs after later qiskit changes
I don't know anymore how can I retrieve old jobs from qiskit via the jupyter notebook. When I try to use the commands
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Does anyone have an idea about the execution power of IBM summit for VQE? I'd appreciate sources of papers as well for supercomputer execution
I'm trying to find the execution power of VQE in super computer and I want to know the factors of execution such as iterations, shots, convergence, etc. Please help me and also, I'd appreciate if ...
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qiskit_aer.aererror.AerError: 'unknown instruction: ccry'
I'm trying to use qiskit_aer_gpu 0.14.2 with qiskit 1.1.0
I defined the class CCRYGate() y another script gate.py
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Does Qiskit SamplerV2 change circuit depth?
I'm currently implementing some algorithms on IBM quantum devices. After the migration to qiskit 1.0, I started using primitives and SamplerV2.
What I observed is that even if I manually select a ...
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qiskit transpile taking forever to run while CPU usage near zero
I am using the following code to use IBM's quantum computer. My understanding is that it is required before circuits are passed to the real quantum computers as certain operations and instructions ...
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Qiskit IBM Runtime EstimatorV2 has changed the user specified default number of shots
While I am running some simulations on IBM hardware, I've noticed that the number of shots recorded in the metadata of the job is different from the number of shots I've specified. For example, I've ...
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IBM quantum computer backend cycle time and real gate duration
I am new to dynamical decoupling and is trying to study this from qiskit: https://docs.quantum.ibm.com/api/qiskit/qiskit.transpiler.passes.PadDynamicalDecoupling . There, they are specifying the ...
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IBM Quantum payload error
I've received the following error on one of the circuits I'm running on IBM Quantum devices (on IBM Brisbane) using EstimatorV2 primitive.
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Quantum Computing - via Qiskit - error 403
A year ago, I registered in the IBM Quantum Computing app, which provides access to quantum computers and to simulators. I got an API key, and was able to run some programs.
However, lately, I try to ...
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IBM fake backend vs real backend
It is claimed that the fake backends of IBM will have noise similar to the real backends. However, to what extent can we expect them to produce the same results?
I have run my quantum circuit on the ...
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How to run the post processing and return results in QAOA?
As suggested in TranspilerError: 'Number of qubits (40) in QAOA is greater than maximum (30) in the coupling_map' issue. I managed to submit the job to IBM quantum and the circuit runs successfully.
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QiskitBackendNotFoundError - Unable to run the backend using BackendEstimator primitive
I am trying to run a small quantum circuit and generate the expectation value of an observable using the BackendEstimator primitive by incorporating the noise model ...
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