Observation of two-beam collective scattering phenomena in a Bose-Einstein condensate

被引：21

作者：

Dimitrova, Ivana ^{[1
]}

Lunden, William ^{[1
]}

Amato-Grill, Jesse ^{[1
,2
]}

Jepsen, Niklas ^{[1
]}

Yu, Yichao ^{[1
,2
]}

Messer, Michael ^{[1
,3
]}

Rigaldo, Thomas ^{[1
,4
]}

Puentes, Graciana ^{[1
,5
,6
]}

Weld, David ^{[1
,7
]}

Ketterle, Wolfgang ^{[1
]}

机构：

[1] MIT, Dept Phys, Res Lab Elect, MIT Harvard Ctr Ultracold Atoms, Cambridge, MA 02139 USA

[2] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[3] ETH, Inst Quantum Elect, CH-8093 Zurich, Switzerland

[4] Univ Pierre & Marie Curie Paris 6, 4 Pl Jussieu, F-75252 Paris 05, France

[5] UBA, Dept Fis, FCEyN, Pabellon 1,Ciudad Univ, RA-1428 Buenos Aires, DF, Argentina

[6] UBA CONICET, Inst Fis Buenos Aires, Pabellon 1,Ciudad Univ, RA-1428 Buenos Aires, DF, Argentina

[7] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

来源：

PHYSICAL REVIEW A | 2017年 / 96卷 / 05期

基金：

美国国家科学基金会;

关键词：

SUPERRADIANT RAYLEIGH-SCATTERING; LIGHT-SCATTERING; GAS; AMPLIFICATION; CAVITY; ATOMS; LASER;

D O I：

10.1103/PhysRevA.96.051603

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Different regimes of collective light scattering are observed when an elongated Bose-Einstein condensate is pumped by two noninterfering beams counterpropagating along its long axis. In the limit of small Rayleigh scattering rates, the presence of a second pump beam suppresses superradiance, whereas at large Rayleigh scattering rates it lowers the effective threshold power for collective light scattering. In the latter regime, the quench dynamics of the two-beam system are oscillatory, compared to monotonic in the single-beam case. In addition, the dependence on power, detuning, and atom number is explored. The observed features of the two-beam system qualitatively agree with the recent theoretical prediction of a supersolid crystalline phase of light and matter at large Rayleigh scattering rates.

引用

页数：6

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