Measurement Induced Quantum Coherence Recovery

TL;DR

This paper demonstrates that measurement can recover quantum coherence in a qubit within a non-Markovian environment, with experimental validation in an optical system, offering potential applications in quantum information processing.

Contribution

It introduces a measurement-based method to recover quantum coherence in non-Markovian environments, validated experimentally with optical systems.

Findings

Measurement restores quantum coherence in non-Markovian environments.

Experimental validation shows increased visibility and fidelity after measurement.

Method applicable to various two-level systems and entangled states.

Abstract

We show that measurement can recover the quantum coherence of a qubit in a non-Markovian environment. The experimental demonstration in an optical system is provided by comparing the visibilities (and fidelities) of the final states with and without measurement. This method can be extended to other two-level quantum systems and entangled states in a non-Markovian evolution environment. It may also be used to implement other quantum information processing.