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Title: Constant-depth circuits for dynamic simulations of materials on quantum computers

Abstract

Dynamic simulation of materials is a promising application for near-term quantum computers. Current algorithms for Hamiltonian simulation, however, produce circuits that grow in depth with increasing simulation time, limiting feasible simulations to short-time dynamics. Here, we present a method for generating circuits that are constant in depth with increasing simulation time for a specific subset of one-dimensional (1D) materials Hamiltonians, thereby enabling simulations out to arbitrarily long times. Furthermore, by removing the effective limit on the number of feasibly simulatable time-steps, the constant-depth circuits enable Trotter error to be made negligibly small by allowing simulations to be broken into arbitrarily many time-steps. For an N-spin system, the constant-depth circuit contains only $$\mathcal {O}(N^{2})$$ O ( N 2 ) CNOT gates. Such compact circuits enable us to successfully execute long-time dynamic simulation of ubiquitous models, such as the transverse field Ising and XY models, on current quantum hardware for systems of up to 5 qubits without the need for complex error mitigation techniques. Aside from enabling long-time dynamic simulations with minimal Trotter error for a specific subset of 1D Hamiltonians, our constant-depth circuits can advance materials simulations on quantum computers more broadly in a number of indirect ways.

Authors:
ORCiD logo; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
OSTI Identifier:
1847974
Alternate Identifier(s):
OSTI ID: 1773718; OSTI ID: 1862832
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Published Article
Journal Name:
Materials Theory
Additional Journal Information:
Journal Name: Materials Theory Journal Volume: 6 Journal Issue: 1; Journal ID: ISSN 2509-8012
Publisher:
Springer Science + Business Media
Country of Publication:
Switzerland
Language:
English
Subject:
36 MATERIALS SCIENCE; Quantum simulation; Quantum computation; Quantum circuit synthesis; Materials simulation; Dynamic simulation

Citation Formats

Bassman Oftelie, Lindsay, Van Beeumen, Roel, Younis, Ed, Smith, Ethan, Iancu, Costin, and de Jong, Wibe A. Constant-depth circuits for dynamic simulations of materials on quantum computers. Switzerland: N. p., 2022. Web. doi:10.1186/s41313-022-00043-x.
Bassman Oftelie, Lindsay, Van Beeumen, Roel, Younis, Ed, Smith, Ethan, Iancu, Costin, & de Jong, Wibe A. Constant-depth circuits for dynamic simulations of materials on quantum computers. Switzerland. https://doi.org/10.1186/s41313-022-00043-x
Bassman Oftelie, Lindsay, Van Beeumen, Roel, Younis, Ed, Smith, Ethan, Iancu, Costin, and de Jong, Wibe A. Mon . "Constant-depth circuits for dynamic simulations of materials on quantum computers". Switzerland. https://doi.org/10.1186/s41313-022-00043-x.
@article{osti_1847974,
title = {Constant-depth circuits for dynamic simulations of materials on quantum computers},
author = {Bassman Oftelie, Lindsay and Van Beeumen, Roel and Younis, Ed and Smith, Ethan and Iancu, Costin and de Jong, Wibe A.},
abstractNote = {Dynamic simulation of materials is a promising application for near-term quantum computers. Current algorithms for Hamiltonian simulation, however, produce circuits that grow in depth with increasing simulation time, limiting feasible simulations to short-time dynamics. Here, we present a method for generating circuits that are constant in depth with increasing simulation time for a specific subset of one-dimensional (1D) materials Hamiltonians, thereby enabling simulations out to arbitrarily long times. Furthermore, by removing the effective limit on the number of feasibly simulatable time-steps, the constant-depth circuits enable Trotter error to be made negligibly small by allowing simulations to be broken into arbitrarily many time-steps. For an N-spin system, the constant-depth circuit contains only $\mathcal {O}(N^{2})$ O ( N 2 ) CNOT gates. Such compact circuits enable us to successfully execute long-time dynamic simulation of ubiquitous models, such as the transverse field Ising and XY models, on current quantum hardware for systems of up to 5 qubits without the need for complex error mitigation techniques. Aside from enabling long-time dynamic simulations with minimal Trotter error for a specific subset of 1D Hamiltonians, our constant-depth circuits can advance materials simulations on quantum computers more broadly in a number of indirect ways.},
doi = {10.1186/s41313-022-00043-x},
journal = {Materials Theory},
number = 1,
volume = 6,
place = {Switzerland},
year = {Mon Mar 07 00:00:00 EST 2022},
month = {Mon Mar 07 00:00:00 EST 2022}
}

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