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Error mitigation with Clifford quantum-circuit data

Journal Article · · Quantum
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 { Xi noisy , Xi exact } via quantum circuits composed largely of Clifford gates, which can be efficiently simulated classically, where Xi noisy and Xi 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

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Cited By (6)

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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