Sudden transition between classical and quantum decoherence

Laura Mazzola, Jyrki Piilo, Sabrina Maniscalco

Research output: Contribution to journalLetter

Abstract

We study the dynamics of quantum and classical correlations in the presence of nondissipative decoherence. We discover a class of initial states for which the quantum correlations, quantified by the quantum discord, are not destroyed by decoherence for times t<t¯ . In this initial time interval classical correlations decay. For t>t¯ , on the other hand, classical correlations do not change in time and only quantum correlations are lost due to the interaction with the environment. Therefore, at the transition time t¯ the open system dynamics exhibits a sudden transition from classical to quantum decoherence regime.
Original languageEnglish
Article number200401
Number of pages4
JournalPhysical Review Letters
Volume104
Issue number20
DOIs
Publication statusPublished - 17 May 2010

Cite this

Mazzola, Laura ; Piilo, Jyrki ; Maniscalco, Sabrina. / Sudden transition between classical and quantum decoherence. In: Physical Review Letters. 2010 ; Vol. 104, No. 20.
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Sudden transition between classical and quantum decoherence. / Mazzola, Laura; Piilo, Jyrki; Maniscalco, Sabrina.

In: Physical Review Letters, Vol. 104, No. 20, 200401, 17.05.2010.

Research output: Contribution to journalLetter

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AB - We study the dynamics of quantum and classical correlations in the presence of nondissipative decoherence. We discover a class of initial states for which the quantum correlations, quantified by the quantum discord, are not destroyed by decoherence for times tt¯ , on the other hand, classical correlations do not change in time and only quantum correlations are lost due to the interaction with the environment. Therefore, at the transition time t¯ the open system dynamics exhibits a sudden transition from classical to quantum decoherence regime.

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