Thermometry and refrigeration in a two-component Mott insulator of ultracold atoms

被引：20

作者：

Weld, David M. ^{[1
]}

Miyake, Hirokazu

Medley, Patrick

Pritchard, David E.

Ketterle, Wolfgang

机构：

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

来源：

PHYSICAL REVIEW A | 2010年 / 82卷 / 05期

基金：

美国国家科学基金会;

关键词：

Adiabatic cooling - Adiabatic reduction - Field gradient - Magnetic field gradient - Ordered phasis - Spin hamiltonian - Two-component - Ultracold atoms;

D O I：

10.1103/PhysRevA.82.051603

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Interesting spin Hamiltonians can be realized with ultracold atoms in a two-component Mott insulator (2CMI) [Adv. Phys. 56, 243 (2007); Rev. Mod. Phys. 80, 885 (2008)]. It was recently demonstrated that the application of a magnetic field gradient to the 2CMI enables new techniques of thermometry [Phys. Rev. Lett. 103, 245301 (2009)] and adiabatic cooling [e-print arXiv:1006.4674]. Here we present a theoretical description which provides quantitative analysis of these two techniques. We show that adiabatic reduction of the field gradient is capable of cooling below the Curie or Neel temperature of certain spin-ordered phases.

引用

页数：4

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