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Dipartimento di Fisica

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Competition between memory-keeping and memory-erasing decoherence channels
Speaker Speaker: Prof. Tony J. G. Apollaro
Affiliato Affiliato: Department of Physics - University of Malta
Data Evento Martedì 12 Marzo , alle ore 15.30 - Aula seminari Dipartimento di Fisica, Cubo 31 C
Email Per informazioni scrivere a: domenico.giuliano@fis.unical.it
In this seminar I will describe the competing effects of simultaneous Markovian and non-Markovian decoherence mechanisms acting on a single spin. There exists a threshold in the relative strength of such mechanisms above which the spin dynamics becomes fully Markovian, as revealed by the use of several non-Markovianity measures. One can identify a measure-dependent nested structure of such thresholds, hinting at a causality relationship amongst the various non-Markovianity witnesses. Finally, I will argue that the evolution of a single-electron quantum dot exposed to both intrinsic and Markovian technical noise, the latter of arbitrary strength, is unavoidably non-Markovian.