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SUMMARY: Quasiperiodic lattices as tunable quantum reservoirs: exploring t
 he Markovian to non-Markovian crossover - Prof. Sabrina Maniscalco\, Unive
 rsity of Turku\, Finland
DTSTART:20180320T100000Z
DTEND:20180320T110000Z
UID:TALK103195@talks.cam.ac.uk
CONTACT:Dr Ulrich Schneider
DESCRIPTION:Fermionic systems under the influence of quasiperiodic fields 
 display different relaxation properties. In particular\, employing bichrom
 atic optical lattices and initial fermionic gases prepared in the so calle
 d charge density wave state\, the crossover from ergodic to non-ergodic dy
 namics can be witnessed monitoring the density imbalance in the occupation
  of even and odd sites. \nWe investigate such setup from an open quantum s
 ystem theory perspective\, designing a protocol in which an impurity atom 
 is coupled to the fermionic cloud trapped in the bichromatic lattice. This
  interaction induces decoherence in the probe induced by the complex out-o
 f equilibrium environment. We focus our attention on the time evolution of
  the impurity in such environment and study wether the probe dynamics can 
 be classified as Markovian or non-Markovian. Specifically we see how the l
 ocalised phase of the Aubry-Andre’ model displays evidence of strong mem
 ory effects.\n\n
LOCATION:TCM Seminar Room\, Mott Building Room 530\, Cavendish Laboratory
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