Quantum spin dynamics of mode-squeezed luttinger liquids in two-component atomic gases

被引：109

作者：

Widera, Artur ^{[1
]}

Trotzky, Stefan ^{[1
]}

Cheinet, Patrick ^{[1
]}

Foelling, Simon ^{[1
]}

Gerbier, Fabrice ^{[1
]}

Bloch, Immanuel ^{[1
]}

Gritsev, Vladimir ^{[2
]}

Lukin, Mikhail D. ^{[2
]}

Demler, Eugene ^{[2
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

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

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.100.140401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the observation of many-body spin dynamics of interacting, one-dimensional (1D) ultracold bosonic gases with two spin states. By controlling the nonlinear atomic interactions close to a Feshbach resonance we are able to induce a phase diffusive many-body spin dynamics of the relative phase between the two components. We monitor this dynamical evolution by Ramsey interferometry, supplemented by a novel, many-body echo technique, which unveils the role of quantum fluctuations in 1D. We find that the time evolution of the system is well described by a Luttinger liquid initially prepared in a multimode squeezed state. Our approach allows us to probe the nonequilibrium evolution of one-dimensional many-body quantum systems.

引用

页数：4

共 30 条

[1]

BERMAN PR, 1996, ATOM INTERFEEROMETRY

[2] Intrinsic dephasing in one-dimensional ultracold atom interferometers [J].