Momentum-resolved study of an array of one-dimensional strongly phase-fluctuating Bose gases

被引：46

作者：

Fabbri, N. ^{[1
,2
,3
]}

Clement, D. ^{[1
,2
,3
]}

Fallani, L. ^{[1
,2
,3
]}

Fort, C. ^{[1
,2
,3
,4
]}

Inguscio, M. ^{[1
,2
,3
]}

机构：

[1] Univ Firenze, European Lab Nonlinear Spect LENS, I-50019 Sesto Fiorentino, Italy

[2] Univ Firenze, Dipartimento Fis & Astron, I-50019 Sesto Fiorentino, Italy

[3] Ist Nazl Ottica INO CNR, Sez Sesto Fiorentino, I-50019 Sesto Fiorentino, Italy

[4] Consorzio Nazl Interuniv Sci Fis Materia UdR Fire, I-50019 Sesto Fiorentino, Italy

来源：

PHYSICAL REVIEW A | 2011年 / 83卷 / 03期

基金：

欧洲研究理事会;

关键词：

SPECTROSCOPY; COHERENCE;

D O I：

10.1103/PhysRevA.83.031604

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate the coherence properties of an array of one-dimensional Bose gases with short-scale phase fluctuations. The momentum distribution is measured using Bragg spectroscopy, and an effective coherence length of the whole ensemble is defined. In addition, we propose and demonstrate that time-of-flight absorption imaging can be used as a simple probe to directly measure the coherence length of one-dimensional gases in the regime where phase fluctuations are strong. This method is suitable for future studies such as investigating the effect of disorder on the phase coherence.

引用

页数：4

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