Quantum billiard atom optics

E-ISSN： 1286-4854|60|4|505-511

ISSN： 0295-5075

Source： EPL (EUROPHYSICS LETTERS), Vol.60, Iss.4, 2010-03, pp. : 505-511

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Abstract

The phenomenon of fractional self-imaging can be used to implementatom-optical components in the interior of a rectangular quantumbilliard. Their temporal concatenation may lead to complex “atomchips” operating in the time-domain. As an elementary example, wediscuss a billiard internal Mach-Zehnder interferometer that canbe transformed into an all-optical switch or controllable beamsplitter for atoms. The inherent coherence and reversibility ofits dynamics also provides a simple means to realize aWelcher Weg/Quantum erasure experiment. The whole concept isshown to be robust with respect to realistic wall-softness effectsand feasible within the present state of the art.