Non-Markovianity through quantum coherence in an all-optical setup

TL;DR

This paper presents an all-optical experimental method to measure non-Markovianity in quantum systems by analyzing quantum coherence, with theoretical and experimental results showing strong agreement.

Contribution

It introduces a novel optical setup for quantifying non-Markovianity via quantum coherence, including analytical optimization and experimental validation.

Findings

Experimental results match theoretical predictions

Optical setup effectively simulates amplitude damping channel

Quantification of non-Markovianity through coherence is feasible

Abstract

We propose an all-optical experiment to quantify non-Markovianity in an open quantum system through quantum coherence of a single quantum bit. We use an amplitude damping channel implemented by an optical setup with an intense laser beam simulating a single-photon polarization. The optimization over initial states required to quantify non-Markovianity is analytically evaluated. The experimental results are in a very good agreement with the theoretical predictions.