Squeezing and robustness of frictionless cooling strategies

TL;DR

This paper analyzes the robustness of frictionless quantum cooling strategies by framing them as a squeezing effect, addressing practical implementation issues and potential experimental applications in optical traps.

Contribution

It introduces a squeezing-based parametrization of robustness for frictionless cooling, linking theoretical models to practical experimental considerations.

Findings

Robustness of cooling strategies can be characterized by a squeezing effect.

Practical issues in implementing frictionless cooling are discussed.

Potential experimental setups using optical traps are proposed.

Abstract

Quantum control strategies that provide shortcuts to adiabaticity are increasingly considered in various contexts including atomic cooling. Recent studies have emphasized practical issues in order to reduce the gap between the idealized models and actual ongoing implementations. We rephrase here the cooling features in terms of a peculiar squeezing effect, and use it to parametrize the robustness of frictionless cooling techniques with respect to noise-induced deviations from the ideal time-dependent trajectory for the trapping frequency. We finally discuss qualitative issues for the experimental implementation of this scheme using bichromatic optical traps and lattices, which seem especially suitable for cooling Fermi-Bose mixtures and for investigating equilibration of negative temperature states, respectively.