Majorana Fermions in Equilibrium and in Driven Cold-Atom Quantum Wires

被引：574

作者：

Jiang, Liang ^{[1
,2
]}

Kitagawa, Takuya ^{[3
]}

Alicea, Jason ^{[4
]}

Akhmerov, A. R. ^{[5
]}

Pekker, David ^{[2
]}

Refael, Gil ^{[2
]}

Cirac, J. Ignacio ^{[6
]}

Demler, Eugene ^{[3
]}

Lukin, Mikhail D. ^{[3
]}

Zoller, Peter ^{[7
]}

机构：

[1] CALTECH, Inst Quantum Informat, Pasadena, CA 91125 USA

[2] CALTECH, Dept Phys, Pasadena, CA 91125 USA

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

[4] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

[5] Leiden Univ, Inst Lorentz, NL-2300 RA Leiden, Netherlands

[6] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

[7] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 22期

基金：

美国国家科学基金会;

关键词：

BOSE-EINSTEIN CONDENSATION; GAS; MOLECULES;

D O I：

10.1103/PhysRevLett.106.220402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We introduce a new approach to create and detect Majorana fermions using optically trapped 1D fermionic atoms. In our proposed setup, two internal states of the atoms couple via an optical Raman transition-simultaneously inducing an effective spin-orbit interaction and magnetic field-while a background molecular BEC cloud generates s-wave pairing for the atoms. The resulting cold-atom quantum wire supports Majorana fermions at phase boundaries between topologically trivial and nontrivial regions, as well as "Floquet Majorana fermions" when the system is periodically driven. We analyze experimental parameters, detection schemes, and various imperfections.

引用

页数：4

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