Darmstadt 2008 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 27: Poster Quantengase

Q 27.23: Poster

Dienstag, 11. März 2008, 16:30–19:00, Poster C2

Degenerate ground states in a 0-π-junction of an atomic gas — •Matthias Mutschler, Oliver Crasser, Reinhold Walser, and Wolfgang P. Schleich — Institut für Quantenphysik, Universität Ulm, D-89081 Ulm

0-π-Josephson-junctions are an important tool and research subject in superconductivity [1]. In the present contribution we examine an analogous model realised with a two-componend bosonic atomic gas which is trapped in a quasi one-dimensional double well potential. Within a simple four-mode approximation we obtain an system analogous to a 0-π-junction. We present an analysis of the ground states and tunneling effects between the degenerated ground state manifold.

W. Buckel and R. Kleiner, Superconductivity: Fundamentals and applications, Wiley-VCH, Berlin (2004)
E. Goldobin et al., Phys. Rev. B 72, 054527 (2005)
V.M. Kaurov and A.B. Kuklov, Phys. Rev. A 73, 013627 (2006)
E. Goldobin et al., New J. Phys., in preparation