Unanswered Questions
132 questions with no upvoted or accepted answers
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Resources on the energy consumption of IBM quantum computers?
I am seeking information regarding the energy consumption of IBM Quantum Computers, specifically inquiring about the energy requirements associated with individual gate operations.
Could you also ...
glS♦
- 26.9k
6
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Quantum State Tomography Implementation in IBMQ
I am working to understand quantum state tomography, specifically using the algorithm presented in PRL 108, 070502. This paper is referenced in IBMQ implementations of QST, both in old deprecated ...
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Optical quantum computers VS Superconducting quantum computers VS Electron-spin quantum computers
One of the main problems of superconducting quantum computers is that it is necessary to maintain a very low temperature (near absolute zero).
Such cooling is very expensive and complex.
Why, then, ...
- 5,969
6
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Bell State 11 not working for parity curve
I am currently writing a script to automate the creation of parity curves for a 2 qubit bell state and then calculate fidelity and proving entanglement from that (inspired by this paper). It was going ...
glS♦
- 26.9k
5
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How to get the compiled circuits and measurements from a Qiskit Runtime job
I have not been able to find any way to retrieve the compiled circuits and the measurement counts used for a Qiskit Runtime job. This page describes the various error suppression mechanisms available. ...
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5
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What is the best way to use loop statements on a quantum computer?
I am interested in solving a time dependent linear partial differential equation of the form $Ax=b$ which, in classical computing, would amount to looping over solutions of $Ax=b$ where $b$ is updated ...
glS♦
- 26.9k
5
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160
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Results from looped experiments on IBM Q different than individual experiments
I'm experiencing an issue while using Qiskit where the counts from a job return vastly different values when ran in a loop or as an array of circuits as opposed to single experiments when run by ...
- 17.8k
4
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Where can I find information about the differences between IBM simulator backends?
I'm an Msc student working on a quantum information project (VQEs on 4 qubits).
Our group is looking at different IBM simulators on the IBM platform, and have noticed that performance is different for ...
glS♦
- 26.9k
4
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answers
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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 ...
4
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Implementing Shor's algorithm on IBM Quantum Composer
I'm trying to recreate
from this paper in the IBM Quantum Composer. However, this circuit isn't enough understandable for me to do so.
I have tried to recreate the above circuit in the composer as ...
- 157
4
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86
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Incorrect probabilities in IBMQ Mid-circuit measurements
I calculated the probabilities for two measurements using mid-circuit measurements feature in IBMQ by following circuit:
...
- 577
4
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1
answer
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Can the ancilla for Qiskit's mcx with mode="recursion" be dirty?
I think their implementation is close to the one from here which does use a dirty ancilla, but I just want to make sure
CommunityBot
- 1
4
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How much information is stored in entangled states (IBM report Quantum Decade)?
In its report Quantum Decade, IBM claims that we need 512 classical bits to represent two-qubits entangled state (see graphic on pg. 2 in the report). This seems a little bit odd to me.
Lets have a ...
glS♦
- 26.9k
4
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What is the actual precision of the IBM quantum computer?
In working with the IBM quantum computer, one can use for example the composer in order to build simple quantum algorithms. Essentially, one usually feeds a phase in order to affect one of the qubits. ...
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Adding team to our IBM Quantum Experience account
I have an account and API token on IBM Quantum Experience (https://quantum-computing.ibm.com/)
I would like to add team members to the account, so that everyone can use it without sharing login ...
