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DTSTART:20200329T030000
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DTSTART:20191027T020000
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DTSTAMP:20260404T065337Z
UID:5c5c38a48b7ca535925370@ist.ac.at
DTSTART:20191126T110000
DTEND:20191126T120000
DESCRIPTION:Speaker: Ayaka Usui\nhosted by Mikhail Lemeshko\nAbstract: I in
 vestigate ultracold gases theoretically and aim to create entanglement. In
  this talk\, first I will introduce the basic properties of cold atoms and
  spin-orbit coupling. The spin-orbit coupling provides coupling between mo
 mentum and internal state degree. I will present work that considers two i
 nteracting bosons with synthetic spin-orbit coupling in one dimension [1].
  The two bosons are described by two identical atoms with different hyperf
 ine states\, and therefore can be regarded as a two-level system with a ps
 eudo-spin. The system is tractable since it is solvable exactly for some s
 ets of parameters and allows to study what happens without any approximati
 ons. Even though the system we consider is bosonic\, I will show that a re
 gime exists in which the competition between the contact and spin-orbit in
 teractions results in the emergence of a ground state that contains a sign
 ificant contribution from the anti-symmetric spin state. This ground state
  is unique to few-particle systems and does not exist in the mean-field re
 gime. Here I will discuss the static properties of the system such as the 
 ground state and the energy spectrum. I will also talk about generating en
 tanglement in real space as future work.[1] A. Usui\, Th. Fogarty\, S. Cam
 pbell\, S. A. Gardiner\, Th. Busch\, arXiv:1910.02399
LOCATION:Heinzel Seminar Room / Office Bldg West (I21.EG.101)\, ISTA
ORGANIZER:cpetz@ist.ac.at
SUMMARY:Ayaka Usui: Exploration of quantum states with cold atoms: Spin-orb
 it coupling in the presence of strong atomic correlations
URL:https://talks-calendar.ista.ac.at/events/2347
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