Investigating Leggett-Garg Inequality for a Two Level System Under Decoherence in a Non-Markovian Dephasing Environment

Overview

Journal Sci Rep

Specialty Science

Date 2014 Aug 23

PMID 25145508

Citations 1

Authors

Po-Wen Chen

Md Manirul Ali

Affiliations

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Abstract

Leggett-Garg inequalities (LGI) test the correlations of a single system measured at different times. Violation of LGI implies either the absence of a realistic description of the system or the impossibility of measuring the system without disturbing it. We investigate the violation of the Leggett-Garg inequality for a two level system under decoherence in a non-Markovian dephasing environment. We discuss the non-Markovian dynamics of the violation of LGI at zero temperature and also at finite temperature for different structured environments. An enhanced quantum coherence is shown through the violation of Leggett-Garg inequality in the strong non-Markovian regime of the environment.

Citing Articles

Enhancing violations of Leggett-Garg inequalities in nonequilibrium correlated many-body systems by interactions and decoherence.

Mendoza-Arenas J, Gomez-Ruiz F, Rodriguez F, Quiroga L Sci Rep. 2019; 9(1):17772.

PMID: 31780693 PMC: 6882789. DOI: 10.1038/s41598-019-54121-1.

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