Coherent Phase Control in Closed and Open Quantum Systems: A General Master Equation Approach

TL;DR

This paper investigates one-photon phase control in quantum systems using a master equation approach, identifying two distinct mechanisms and analyzing the impact of common approximations on control effectiveness.

Contribution

It introduces a general master equation framework that reveals two mechanisms for phase control and examines the effects of secular and non-secular Markovian approximations.

Findings

Two mechanisms for phase control are identified.

Secular and non-secular Markovian approximations have distinct effects.

The approach clarifies the underlying physics of phase control in quantum systems.

Abstract

The underlying mechanisms for one photon phase control are revealed through a master equation approach. Specifically, two mechanisms are identified, one operating on the laser time scale and the other on the time scale of the system-bath interaction. The effect of the secular and non-secular Markovian approximations are carefully examined.