Quantum billiard atom optics
Instituto de Física, Universidade Federal do Rio de Janeiro
Caixa Postal 68.528, 21945-970 Rio de Janeiro, Brazil
Accepted: 6 September 2002
The phenomenon of fractional self-imaging can be used to implement atom-optical components in the interior of a rectangular quantum billiard. Their temporal concatenation may lead to complex “atom chips” operating in the time-domain. As an elementary example, we discuss a billiard internal Mach-Zehnder interferometer that can be transformed into an all-optical switch or controllable beam splitter for atoms. The inherent coherence and reversibility of its dynamics also provides a simple means to realize a Welcher Weg/Quantum erasure experiment. The whole concept is shown to be robust with respect to realistic wall-softness effects and feasible within the present state of the art.
PACS: 03.75.Be – Atom and neutron optics / 42.50.Vk – Mechanical effects of light on atoms, molecules, electrons, and ions / 03.65.Sq – Semiclassical theories and applications
© EDP Sciences, 2002