Quantum Simulations for Strong-Field QED
- URL: http://arxiv.org/abs/2311.18209v1
- Date: Thu, 30 Nov 2023 03:05:26 GMT
- Title: Quantum Simulations for Strong-Field QED
- Authors: Luis Hidalgo and Patrick Draper
- Abstract summary: We perform quantum simulations of strong-field QED (SFQED) in $3+1$ dimensions.
The interactions relevant for Breit-Wheeler pair-production are transformed into a quantum circuit.
Quantum simulations of a "null double slit" experiment are found to agree well with classical simulations.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Quantum field theory in the presence of strong background fields contains
interesting problems where quantum computers may someday provide a valuable
computational resource. In the NISQ era it is useful to consider simpler
benchmark problems in order to develop feasible approaches, identify critical
limitations of current hardware, and build new simulation tools. Here we
perform quantum simulations of strong-field QED (SFQED) in $3+1$ dimensions,
using real-time nonlinear Breit-Wheeler pair-production as a prototypical
process. The strong-field QED Hamiltonian is derived and truncated in the
Furry-Volkov mode expansion, and the interactions relevant for Breit-Wheeler
are transformed into a quantum circuit. Quantum simulations of a "null double
slit" experiment are found to agree well with classical simulations following
the application of various error mitigation strategies, including an asymmetric
depolarization algorithm which we develop and adapt to the case of
Trotterization with a time-dependent Hamiltonian. We also discuss longer-term
goals for the quantum simulation of SFQED.
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