Error mitigation with Clifford quantum-circuit data
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Achieving near-term quantum observables despite significant hardware noise. For this purpose, we propose a novel, scalable error-mitigation method that applies to gate-based quantum computers. The method generates training data { X i noisy , X i exact } via quantum circuits composed largely of Clifford gates, which can be efficiently simulated classically, where X i noisy and X i exact are noisy and noiseless observables respectively. Fitting a linear ansatz to this data then allows for the prediction of noise-free observables for arbitrary circuits. We analyze the performance of our method versus the number of qubits, circuit depth, and number of non-Clifford gates. Here, we obtain an order-of-magnitude error reduction for a ground-state energy problem on 16 qubits in an IBMQ quantum computer and on a 64-qubit noisy simulator.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
- Grant/Contract Number:
- 89233218CNA000001
- OSTI ID:
- 1836985
- Report Number(s):
- LA-UR--20-23755
- Journal Information:
- Quantum, Journal Name: Quantum Vol. 5; ISSN 2521-327X
- Publisher:
- Quantum Science Open CommunityCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Scalable Evaluation of Quantum-Circuit Error Loss Using Clifford Sampling
|
journal | February 2021 |
| Simple Mitigation Strategy for a Systematic Gate Error in IBMQ | preprint | January 2020 |
| Wildcard error: Quantifying unmodeled errors in quantum processors | preprint | January 2020 |
| Error mitigation by training with fermionic linear optics | preprint | January 2021 |
| Mitigating depolarizing noise on quantum computers with noise-estimation circuits | text | January 2021 |
| Self-mitigating Trotter circuits for SU(2) lattice gauge theory on a quantum computer | text | January 2022 |
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