Suppressing Coherent Gauge Drift in Quantum Simulations

Journal Article · Wed May 27 00:00:00 EDT 2020 · Phys.Rev.D.

OSTI ID:1632197

Lamm, Henry ^[1]; Lawrence, Scott ^[2]; Yamauchi, Yukari ^[2]

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1. Fermilab
2. Maryland U., College Park

Simulations of field theories on noisy quantum computers must contend with errors introduced by that noise. For gauge theories, a large class of errors violate gauge symmetry, and thus may result in unphysical processes occurring in the simulation. We present a method, applicable to non-Abelian gauge theories, for suppressing coherent gauge drift errors through the repeated application of pseudorandom gauge transformation. In cases where the dominant errors are gauge-violating, we expect this method to be a practical way to improve the accuracy of NISQ-era simulations.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• Contributing Organization: NuQS
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1632197
• Report Number(s): arXiv:2005.12688; FERMILAB-PUB-20-195-T; oai:inspirehep.net:1797835
• Journal Information: Phys.Rev.D., Journal Name: Phys.Rev.D.
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS