Multimode-to-monomode guided-atom lasers: An entropic analysis

被引：36

作者：

Gattobigio, G. L. ^{[1
,2
]}

Couvert, A. ^{[1
]}

Jeppesen, M. ^{[1
,3
]}

Mathevet, R. ^{[2
]}

Guery-Odelin, D. ^{[1
,2
]}

机构：

[1] Ecole Normale Super, Lab Kastler Brossel, F-75005 Paris, France

[2] Univ Toulouse 3, IRSAMC, CNRS, Lab Collis Agregats Reactiv,UMR 5589, F-31062 Toulouse 4, France

[3] Australian Natl Univ, Dept Phys, Australian Ctr Quantum Atom Opt, Canberra, ACT 0200, Australia

来源：

PHYSICAL REVIEW A | 2009年 / 80卷 / 04期

关键词：

atom lasers; Bose-Einstein condensation; entropy; laser modes; magneto-optical effects; optical control; radiation pressure; CONDENSATE;

D O I：

10.1103/PhysRevA.80.041605

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have experimentally demonstrated a high level of control of the mode populations of guided-atom lasers (GALs) by showing that the entropies per particle of an optically GAL and the one of the trapped Bose-Einstein condensate (BEC) from which it has been produced are the same. The BEC is prepared in a crossed beam optical dipole trap. We have achieved isentropic outcoupling for both magnetic and optical schemes. We can prepare GAL in a nearly pure monomode regime (85% in the ground state). Furthermore, optical outcoupling enables the production of spinor guided-atom lasers and opens the possibility to tailor their polarization.

引用

页数：4

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