Modulating quantum evolution of moving-qubit by using classical driving

TL;DR

This paper investigates how classical driving influences the quantum evolution of a moving qubit in a non-Markovian environment, revealing that classical driving can enhance quantum speedup and counteract velocity-induced delays.

Contribution

It introduces a detailed analysis of quantum speed limit and non-Markovian effects on a moving qubit under classical driving, highlighting control mechanisms for quantum evolution.

Findings

Classical driving accelerates quantum evolution in non-Markovian environments.

Qubit velocity delays quantum evolution but can be mitigated by classical driving.

Quantum speedup is linked to non-Markovianity and critical velocity points.

Abstract

In this work, we study quantum evolution of an open moving-qubit modulated by a classical driving field. We obtain the density operator of qubit at zero temperature and analyze its quantum evolution dynamics by using quantum speed limit time (QSLT) and a non-Markovianity measure introduced recently. The results show that both the non-Markovian environment and the classical driving can speed up the evolution process, this quantum speedup process is induced by the non-Markovianity and the critical points only depend on the qubit velocity. Moreover, the qubit motion will delay the evolution process, but this negative effect of the qubit velocity on the quantum speedup can be suppressed by the classical driving. Finally, we give the corresponding physical explanation by using the decoherence rates.