Spatial coherence of a polariton condensate

被引：126

作者：

Deng, Hui ^{[1
]}

Solomon, Glenn S.

Hey, Rudolf

Ploog, Klaus H.

Yamamoto, Yoshihisa

机构：

[1] Stanford Univ, Edward L Ginzton Lab, Stanford, CA 94305 USA

[2] Natl Inst Stand & Technol, Phys Lab, Gaithersburg, MD 20899 USA

[3] Paul Drude Inst Festkorperelekt, D-10117 Berlin, Germany

[4] Natl Inst Informat, Tokyo, Japan

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.99.126403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We perform Young's double-slit experiment to study the spatial coherence properties of a two-dimensional dynamic condensate of semiconductor microcavity polaritons. The coherence length of the system is measured as a function of the pump rate, which confirms a spontaneous buildup of macroscopic coherence in the condensed phase. An independent measurement reveals that the position and momentum uncertainty product of the condensate is close to the Heisenberg limit. An experimental realization of such a minimum uncertainty wave packet of the polariton condensate opens a door to coherent matter-wave phenomena such as Josephson oscillation, superfluidity, and solitons in solid state condensate systems.

引用

页数：4

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