Loschmidt cooling by time reversal of atomic matter waves

TL;DR

This paper proposes an experimental method to achieve approximate time reversal of ultracold atomic matter waves in quantum chaos, resulting in significant atom cooling and potential experimental realization.

Contribution

It introduces a novel scheme for matter wave time reversal and demonstrates its effectiveness through theoretical analysis and numerical simulations.

Findings

Significant atom cooling achieved through time reversal.

Approximate time reversal of matter waves demonstrated.

Scheme feasible with current experimental setups.

Abstract

We propose an experimental scheme which allows to realize approximate time reversal of matter waves for 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 several 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.