Quench-Induced Floquet Topological p-Wave Superfluids

被引：80

作者：

Foster, Matthew S. ^{[1
]}

Gurarie, Victor ^{[2
]}

Dzero, Maxim ^{[3
]}

Yuzbashyan, Emil A. ^{[4
]}

机构：

[1] Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA

[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[3] Kent State Univ, Dept Phys, Kent, OH 44242 USA

[4] Rutgers State Univ, Dept Phys & Astron, Ctr Mat Theory, Piscataway, NJ 08854 USA

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 113卷 / 07期

基金：

美国国家科学基金会;

关键词：

DYNAMICS; STATES; MODELS;

D O I：

10.1103/PhysRevLett.113.076403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Ultracold atomic gases in two dimensions tuned close to a p-wave Feshbach resonance were expected to exhibit topological superfluidity, but these were found to be experimentally unstable. We show that one can induce a topological Floquet superfluid if weakly interacting atoms are brought suddenly close ("quenched") to such a resonance, in the time before the instability kicks in. The resulting superfluid possesses Majorana edge modes, yet differs from a conventional Floquet system as it is not driven externally. Instead, the periodic modulation is self-generated by the dynamics.

引用

页数：5

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