Driven-dissipative Bose-Einstein condensates (Prof. H. Ott)

  • Datum: 08.11.2016
  • Uhrzeit: 14:30 - 15:30
  • Vortragende(r): Prof. Dr. Herwig Ott, Department of Physics, Technische Universität Kaiserslautern
  • Raum: Herbert Walther Lecture Hall
  • Gastgeber: MPQ
Ultracold quantum gases are usually well isolated from the environment. This allows for the study of ground state properties and unitary dynamics of many-body quantum systems under almost ideal conditions.

Introducing a controlled coupling to the environment “opens” the quantum system and non-unitary dynamics can be investigated. Such an approach provides new opportunities to study fundamental quantum effects in open systems and to engineer robust many-body quantum states. I will present an experimental platform [1,2] that allows for the controlled engineering of dissipation in ultracold quantum gases by means of localized particle losses. We use this technique to study quantum Zeno dynamics [3] and non-equilibrium dynamics in an ultracold quantum gas [4]. Recently, we were also able to observe bistability in a driven-dissipative Bose-Einstein condensate [5].

References:

[1] T. Gericke et al., Nature Physics 4, 949 (2008)
[2] P. Würtz et al., Phys. Rev. Lett. 103, 080404 (2009)
[3] G. Barontini et al., Phys. Rev. Lett. 110, 035302 (2013)
[4] R. Labouvie et al., Phys Rev. Lett. 115, 050601 (2015)
[5] R. Labouvie et al., Phys. Rev. Lett. 116, 235302 (2016)

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