Probing nonclassicality under dissipation

Md Manirul Ali, Po Wen Chen

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We investigate the nonclassicality of an open quantum system using Leggett-Garg inequalities (LGI) which test the correlations of a single system measured at different times. Violation of LGI implies nonclassical behavior of the open system. We investigate the violation of the Leggett-Garg inequality for a two level system (qubit) spontaneously decaying under a general non-Markovian dissipative environment. A robust nonclassical behavior is shown through the violation of LGI in the non-Markovian regime of the environment. Our results are exact as we have evaluated the two-time correlation functions exactly without using quantum regression theorem. We probe quantum signatures of the open system through the exact dynamics of Leggett-Garg inequalities for a wide range of system-environment parameters beyond Born-Markov regime.

Original languageEnglish
Article number435303
JournalJournal of Physics A: Mathematical and Theoretical
Issue number43
Publication statusPublished - 2017 Sept 29

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Modelling and Simulation
  • Mathematical Physics
  • General Physics and Astronomy


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