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Open Quantum Systems Decoherence Quantum Simulation

The first-order Trotter decomposition in the dynamical-invariant basis

arXiv
Authors: Takuya Hatomura

Year

2023

Paper ID

55380

Status

Preprint

Abstract Read

~2 min

Abstract Words

97

Citations

N/A

Abstract

The Trotter decomposition is a basic approach to Hamiltonian simulation (digital quantum simulation). The first-order Trotter decomposition is the simplest one, whose deviations from target dynamics are of the first order of a small coefficient in terms of the infidelity. In this paper, we consider the first-order Trotter decomposition in the dynamical-invariant basis. By using a state-dependent inequality, we point out that deviations of this decomposition are of the second order of a small coefficient. Moreover, we also show that this decomposition includes a useful example, i.e., digital implementation of shortcuts to adiabaticity by counterdiabatic driving.

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  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
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  • The Trotter decomposition is a basic approach to Hamiltonian simulation (digital quantum simulation).

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