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Loschmidt cooling by time reversal of atomic matter waves
J. Martin, B. Georgeot, D. L. Shepelyansky
par - 30 octobre 2007
We propose an experimental scheme which allows to realize approximate time reversal of matter waves of ultracold atoms in the regime of quantum chaos. We show that a significant fraction of the atoms return back to their original state, being at the same time cooled down by two orders of magnitude. We give a theoretical description of this effect supported by extensive numerical simulations. The proposed scheme can be implemented with existing experimental setups.