Feedback control on geometric phase in dissipative two-level systems

TL;DR

This paper investigates how feedback control can manipulate the geometric phase in dissipative two-level quantum systems, demonstrating control over phase evolution despite dissipation and initial state constraints.

Contribution

It introduces a feedback control method to manipulate the geometric phase in open two-level systems, highlighting phase control without full state manipulation.

Findings

Feedback enables phase control in dissipative systems.

The geometric phase depends on control parameters.

Phase manipulation is possible without arbitrary state transitions.

Abstract

The effect of feedback on a two-level dissipative system is studied in this paper. The results show that it is possible to control the phase in the open system even if its state can not be manipulated from an arbitrary initial one to an arbitrary final one. The dependence of the geometric phase on the control parameters is calculated and discussed.