Magnetically Generated Spin-Orbit Coupling for Ultracold Atoms

被引：172

作者：

Anderson, Brandon M. ^{[1
,2
]}

Spielman, I. B. ^{[1
,2
]}

Juzeliunas, Gediminas ^{[3
]}

机构：

[1] Univ Maryland, Joint Quantum Inst, College Pk, MD 20742 USA

[2] NIST, Gaithersburg, MD 20899 USA

[3] Vilnius Univ, Inst Theoret Phys & Astron, LT-01108 Vilnius, Lithuania

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 12期

基金：

美国国家科学基金会;

关键词：

NEUTRAL ATOMS; GASES; LATTICE; FIELDS;

D O I：

10.1103/PhysRevLett.111.125301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a new technique for producing two- and three-dimensional Rashba-type spin-orbit couplings for ultracold atoms without involving light. The method relies on a sequence of pulsed inhomogeneous magnetic fields imprinting suitable phase gradients on the atoms. For sufficiently short pulse durations, the time-averaged Hamiltonian well approximates the Rashba Hamiltonian. Higher order corrections to the energy spectrum are calculated exactly for spin-1/2 and perturbatively for higher spins. The pulse sequence does not modify the form of rotationally symmetric atom-atom interactions. Finally, we present a straightforward implementation of this pulse sequence on an atom chip.

引用

页数：6

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