Classical-driving-assisted quantum speed-up

TL;DR

This paper introduces a method to accelerate quantum system evolution using classical driving fields, effectively controlling the speed-up in open quantum systems across different coupling regimes and influencing non-Markovian dynamics.

Contribution

It presents a novel approach to enhance quantum evolution speed via classical fields, linking classical control with non-Markovianity manipulation in open quantum systems.

Findings

Classical driving fields can induce quantum speed-up.

Speed-up achieved in both weak and strong coupling regimes.

Classical fields can transition the environment from Markovian to non-Markovian.

Abstract

We propose a method of accelerating the speed of evolution of an open system by an external classical driving field for a qubit in a zero-temperature structured reservoir. It is shown that, with a judicious choice of the driving strength of the applied classical field, a speed-up evolution of an open system can be achieved in both the weak system-environment couplings and the strong system-environment couplings. By considering the relationship between non-Makovianity of environment and the classical field, we can drive the open system from the Markovian to the non-Markovian regime by manipulating the driving strength of classical field. That is the intrinsic physical reason that the classical field may induce the speed-up process. In addition, the roles of this classical field on the variation of quantum evolution speed in the whole decoherence process is discussed.