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Title: Scalar quantum field theories as a benchmark for near-term quantum computers

Journal Article · · Physical Review A
 [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [2]; ORCiD logo [4];  [5]
  1. Tennessee Technological Univ., Cookeville, TN (United States). Dept. of Physics
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computational Sciences and Engineering Division
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computational Sciences and Engineering Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
  5. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy

Quantum field theory (QFT) simulations are a potentially important application for noisy intermediate scale quantum (NISQ) computers. The ability of a quantum computer to emulate a QFT therefore constitutes a natural application-centric benchmark. Foundational quantum algorithms to simulate QFT processes rely on fault-tolerant computational resources, but to be useful on NISQ machines, error-resilient algorithms are required. Here we outline and implement a hybrid algorithm to calculate the lowest energy levels of the paradigmatic 1+1–dimensional $$\phi$$4 interacting scalar QFT. We calculate energy splittings and compare results with experimental values obtained on currently available quantum hardware. We show that the accuracy of mass-renormalization calculations represents a useful metric with which near-term hardware may be benchmarked. Finally, we also discuss the prospects of scaling the algorithm to full simulation of interacting QFTs on future hardware.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
US Department of the Navy, Office of Naval Research (ONR); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1559709
Alternate ID(s):
OSTI ID: 1546166
Journal Information:
Physical Review A, Vol. 99, Issue 3; ISSN 2469-9926
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 48 works
Citation information provided by
Web of Science

References (24)

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Resolving the positions of defects in superconducting quantum bits journal February 2020
Quantum simulation of quantum field theory using continuous variables text January 2015
Real-time dynamics of lattice gauge theories with a few-qubit quantum computer text January 2016
Quantum Computing in the NISQ era and beyond text January 2018
Cloud Quantum Computing of an Atomic Nucleus text January 2018
Quantum-Classical Computation of Schwinger Model Dynamics using Quantum Computers text January 2018
Charge insensitive qubit design derived from the Cooper pair box text January 2007
Quantum computation over continuous variables text January 1998

Cited By (8)

Review on novel methods for lattice gauge theories journal January 2020
Methods for classically simulating noisy networked quantum architectures journal November 2019
XACC: a system-level software infrastructure for heterogeneous quantum–classical computing journal February 2020
Methods for Classically Simulating Noisy Networked Quantum Architectures text January 2018
Quantum simulation of scattering in the quantum Ising model text January 2019
General Methods for Digital Quantum Simulation of Gauge Theories text January 2019
Gluon Field Digitization for Quantum Computers text January 2019
Review on novel methods for lattice gauge theories text January 2019

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