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Non-Markovian master equations from piecewise dynamics

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 نشر من قبل Bassano Vacchini
 تاريخ النشر 2013
  مجال البحث فيزياء
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 تأليف Bassano Vacchini




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We construct a large class of completely positive and trace preserving non-Markovian dynamical maps for an open quantum system. These maps arise from a piecewise dynamics characterized by a continuous time evolution interrupted by jumps, randomly distributed in time and described by a quantum channel. The state of the open system is shown to obey a closed evolution equation, given by a master equation with a memory kernel and a inhomogeneous term. The non-Markovianity of the obtained dynamics is explicitly assessed studying the behavior of the distinguishability of two different initial systems states with elapsing time.



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