| Issue |
EPL
Volume 135, Number 1, July 2021
|
|
|---|---|---|
| Article Number | 10004 | |
| Number of page(s) | 6 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/135/10004 | |
| Published online | 17 September 2021 | |
Optimize quantum simulation using a force-gradient integrator
1 Department of Physics, Liaoning Normal University - Dalian 116029, China
(a) yangjichong@lnnu.edu.cn (corresponding author)
Received: 17 March 2021
Accepted: 1 June 2021
Quantum simulation has shown great potential in many fields due to its powerful computational capabilities. However, the limited fidelity can lead to a severe limitation on the number of gate operations, which requires us to find optimized algorithms. Trotter decomposition and high-order Trotter decompositions are widely used in quantum simulations. We find that they can be significantly improved by force-gradient integrator in lattice QCD. By using two applications as examples, we show that the force-gradient decomposition can reduce the number of gate operations up to about a third of those using high-order Trotter decompositions. Therefore, force-gradient decomposition shows a great prospective in future applications of quantum simulation.
© 2021 EPLA
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