Spontaneous Four-Wave Mixing of de Broglie Waves: Beyond Optics

被引：43

作者：

Krachmalnicoff, V. ^{[1
]}

Jaskula, J. -C. ^{[1
]}

Bonneau, M. ^{[1
]}

Leung, V. ^{[1
]}

Partridge, G. B. ^{[1
]}

Boiron, D. ^{[1
]}

Westbrook, C. I. ^{[1
]}

Deuar, P. ^{[2
]}

Zin, P. ^{[3
]}

Trippenbach, M. ^{[4
]}

Kheruntsyan, K. V. ^{[5
]}

机构：

[1] Univ Paris 11, Inst Opt, Lab Charles Fabry, CNRS, F-91127 Palaiseau, France

[2] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

[3] Andrzej Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland

[4] Univ Warsaw, Dept Phys, Inst Theoret Phys, PL-00681 Warsaw, Poland

[5] Univ Queensland, Sch Math & Phys, ARC Ctr Excellence Quantum Atom Opt, Brisbane, Qld 4072, Australia

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 15期

基金：

澳大利亚研究理事会;

关键词：

ELASTIC-SCATTERING; PHASE; ENTANGLEMENT;

D O I：

10.1103/PhysRevLett.104.150402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the atom-optical analog of degenerate four-wave mixing by colliding two Bose-Einstein condensates of metastable helium. The momentum distribution of the scattered atoms is measured in three dimensions. A simple analogy with photon phase matching conditions suggests a spherical final distribution. We find, however, that it is an ellipsoid with radii smaller than the initial collision momenta. Numerical and analytical calculations agree with this and reveal the interplay between many-body effects, mean-field interaction, and the anisotropy of the source condensate.

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页数：4

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