Evaporative cooling of reactive polar molecules confined in a two-dimensional geometry

Bihui Zhu, Goulven Quéméner, Ana M. Rey, and Murray J. Holland
Phys. Rev. A 88, 063405 – Published 10 December 2013

Abstract

Recent experimental developments in the loading of ultracold KRb molecules into quasi-two-dimensional traps, combined with the ability to tune the ratio between elastic and loss (inelastic, reactive) collisions through application of an external electric field, are opening the door to achieving efficient evaporative cooling of reactive polar molecules. In this paper, we use Monte Carlo simulations and semianalytic models to study theoretically the experimental parameter regimes in which evaporative cooling is feasible under current trapping conditions. We investigate the effect of the anisotropic character of dipole-dipole collisions and reduced dimensionality on evaporative cooling. We also present an analysis of the experimentally relevant antievaporation effects that are induced by chemical reactions that take place when more than one axial vibrational state is populated.

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  • Received 3 November 2013

DOI:https://doi.org/10.1103/PhysRevA.88.063405

©2013 American Physical Society

Authors & Affiliations

Bihui Zhu1, Goulven Quéméner2, Ana M. Rey1,*, and Murray J. Holland1,†

  • 1JILA and Department of Physics, University of Colorado, 440 UCB, Boulder, Colorado 80309, USA
  • 2Laboratorie Aimé Cotton, CNRS, Université Paris-Sud, ENS Cachan, Campus d’Orsay, Bâtiment 505, 91405 Orsay, France

  • *arey@jilau1.colorado.edu
  • murray.holland@colorado.edu

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Vol. 88, Iss. 6 — December 2013

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