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22 votes

What's the difference between T1 and T2?

decoherence terminology asked Feb 6, 2020 at 9:30
quantumcomputing.stackexchange.com

7 votes

How to run a qasm file on IBMQ device?

qiskit ibm-q-experience qasm asked Jan 29, 2020 at 19:48
quantumcomputing.stackexchange.com

7 votes

Qubit fidelity of DWAVE device

physical-qubit fidelity d-wave asked Feb 2, 2022 at 15:43
quantumcomputing.stackexchange.com

6 votes

Does Randomized Benchmarking characterize decoherence error?

decoherence randomised-benchmarking asked Aug 30, 2021 at 12:19
quantumcomputing.stackexchange.com

6 votes

Can D-Wave machines solve QUBO problems more efficiently than gate model devices?

qiskit d-wave qubo asked Dec 16, 2021 at 8:25
quantumcomputing.stackexchange.com

5 votes

Why does quantum error correction work?

error-correction fault-tolerance asked Jan 6, 2020 at 14:04
quantumcomputing.stackexchange.com

5 votes

Why is the action of controlled-Z unaltered by exchanging target control qubits?

quantum-gate error-correction textbook-and-exercises asked Aug 15, 2020 at 13:56
quantumcomputing.stackexchange.com

5 votes

Derivation of the identity $\sum_j p_j \langle \psi_j|M|\psi_j \rangle = \sum_j p_j \operatorname{tr}\left(|\psi_j \rangle \langle \psi_j|M\right)$

quantum-state mathematics measurement textbook-and-exercises asked Jan 28, 2021 at 15:51
quantumcomputing.stackexchange.com

5 votes

Is there a physical definition of barrier operation in qiskit?

quantum-gate qiskit ibm-q-experience asked Mar 12, 2021 at 15:26
quantumcomputing.stackexchange.com


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