Investigating Leggett-Garg inequality for a two level system under decoherence in a non-Markovian dephasing environment

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-G...

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Veröffentlicht in:Scientific reports 2014-08, Vol.4 (1), p.6165-6165, Article 6165
Hauptverfasser: Chen, Po-Wen, Ali, Md. Manirul
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Sprache:eng
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Zusammenfassung: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.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep06165