Questions tagged [ibm-quantum-devices]
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I've wrote code on an outdated version of QisKit but what to run it on a quantum computer
like mentioned in the title I've got working code on an outdated version of QisKit which I run on my own IDE. However I am wanting to run this on a real quantum computer and I can't do this as IBM ...
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How to get the group of qubits which are on the same port of measurement?
From IBMQ's quantum computer, we know that logical qubits are mapped to their computers' physical qubits, and then they are measured to get classical bits (0 and 1). For instance, a 27-qubit ...
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problem with parametrized circuits
I used a circuit with one parametrized gate U(theta, phi, lambda), than I fixed the parameters with qc.bind_parameters and it's worked well. But the only step that don't work is the execution in a ...
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How the real IBM quantum computers apply arbitrary Rz(θ) gate rotation? [closed]
I want to ask the following questions:
(1) The basis gate set of IBM quantum computers is { Id, Rz(θ),√X, X, CNOT, reset}. Somebody said that IBM didn’t really apply Rz(θ) gate on the machine. The ...
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'RuntimeJob' object has no attribute 'queue_position'
I was trying to run a QAOA job using the below script:
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what quantum computing simulator can achieve drag-and-drop programing fuction without internet like IBM web composer?
I reallt need some kind of simulator can work like this.Quirk is similar but also require internet.can anyone know how to achieve this?It is very important for some eaducational lesson to students.
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Time Complexity (Big O Notation)
What is the time complexity of the two error-mitigation methods that are implemented in qiskit.ignis.
1- pseudo inverse.
2- least squares.
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Extracting results from a job when it is in a json form
I have downloaded a job from the COMPOSER JOBS but I get a folder containing three files.
632867a95ccea778be9446fb-info.json
632867a95ccea778be9446fb-input.json
632867a95ccea778be9446fb-output.json
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Retrieving jobs of an expired access device
I had private access to a quantum computer, but the access is expired. So Can I access to my jobs done on it ?
The '''backend.retrieve_job('')''' can't work because I cant load the backend (no access)...
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Reasonable Circuit Depth
So I'm auto-constructing quantum circuits that are being auto-generated from dimacs files along with the addition of the amplification function. It's for a satisfiability problem where the number of ...
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What can I use instead of mct (multi-controlled Toffoli)? (Grover's algorithm)
I implemented the general diffuser (for arbitrary qubits) in Grover's algorithm in terms of an Multi-controlled Toffoli (MCT) gate (it flips target when all controlled gates are 1). However, this gate ...
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how to fix error 'QiskitBackendNotFoundError' [closed]
This is my code:
from qiskit import IBMQ
IBMQ.load_account()
provider = IBMQ.get_provider('ibm-q')
qcomp = provider.get_backend('ibmq_16_melbourne')
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How does it work QasmSimulator with the option "density matrix"?
I am making some simulations on IBM Quantum Lab and as backend I tried to use QasmSimulator(method = "density_matrix") in order to simulate noise. I wanted to know how this method works in ...
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Interpreting VQE and QAOA based solutions in portfolio optimization
I am going through portfolio optimization using Qiskit. It really looks interesting. The module has both VQE and QAOA algorithms for optimizing the portfolios.
In the VQE based solution the ...
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Iterative quantum phase estimation - real device
I'm trying to implement the iterative quantum phase estimation on a real (IBM) quantum computer. I'm using the code below. When I run this code on a simulator the results are the expected ones, but ...
