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arXiv · 1505.04747

Cooling of a one-dimensional Bose gas

Bernhard Rauer·Pjotrs Grišins·Igor E. Mazets·Thomas Schweigler·Wolfgang Rohringer·Remi Geiger·Tim Langen·Jörg Schmiedmayer
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Abstract

We experimentally study the dynamics of a degenerate one-dimensional Bose gas that is subject to a continuous outcoupling of atoms. Although standard evaporative cooling is rendered ineffective by the absence of thermalizing collisions in this system, we observe substantial cooling. This cooling proceeds through homogeneous particle dissipation and many-body dephasing, enabling the preparation of otherwise unexpectedly low temperatures. Our observations establish a scaling relation between temperature and particle number, and provide insights into equilibration in the quantum world.

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Bernhard Rauer, Pjotrs Grišins, Igor E. Mazets, Thomas Schweigler, Wolfgang Rohringer, Remi Geiger, Tim Langen, Jörg Schmiedmayer. 2015-05-18. Cooling of a one-dimensional Bose gas. https://doi.org/10.1103/physrevlett.116.030402

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