Stuttgart 2012 – scientific programme

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A: Fachverband Atomphysik

A 29: Ultra-cold atoms, ions and BEC II

A 29.4: Talk

Thursday, March 15, 2012, 11:15–11:30, V47.02

Investigation of PT symmetry in a model of a Bose-Einstein condensate — •Holger Cartarius and Günter Wunner — 1. Institut für Theoretische Physik, Universität Stuttgart, 70550 Stuttgart, Germany

The observation of PT symmetry in a coupled optical wave guide system that involves a complex refractive index has been demonstrated impressively in the recent experiment by Rüter et al. [1]. This is, however, only an optical analogue of a quantum system, and it would be highly desirable to observe the manifestation of PT symmetry and its resulting properties also in a real, experimentally accessible, quantum system. Following a suggestion by Klaiman et al. [2], we investigate a PT symmetric arrangement of a Bose-Einstein condensate in a double δ well potential, where in one well cold atoms are injected while in the other particles are extracted from the condensate.

[1] C. E. Rüter, K. G. Makris, R. El-Ganainy, D. N. Christodoulides, M. Segev, and D. Kip, Nature Physics 6, 192 (2010)

[2] S. Klaiman, U. Günther, and N. Moiseyev, Phys. Rev. Lett. 101, 080402 (2008)