Interferometric Probes of Many-Body Localization

被引：149

作者：

Serbyn, M. ^{[1
]}

Knap, M. ^{[2
,3
]}

Gopalakrishnan, S. ^{[2
]}

Papic, Z. ^{[4
,5
]}

Yao, N. Y. ^{[2
]}

Laumann, C. R. ^{[2
,4
,6
]}

Abanin, D. A. ^{[4
,5
]}

Lukin, M. D. ^{[2
]}

Demler, E. A. ^{[2
]}

机构：

[1] MIT, Dept Phys, Cambridge, MA 02139 USA

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

[3] Harvard Smithsonian Ctr Astrophys, ITAMP, Cambridge, MA 02138 USA

[4] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada

[5] Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada

[6] Univ Washington, Dept Phys, Seattle, WA 98195 USA

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 113卷 / 14期

基金：

美国国家科学基金会; 奥地利科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

SPIN-ECHO; RESONANCE; INSULATOR; SYSTEMS;

D O I：

10.1103/PhysRevLett.113.147204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose a method for detecting many-body localization (MBL) in disordered spin systems. The method involves pulsed coherent spin manipulations that probe the dephasing of a given spin due to its entanglement with a set of distant spins. It allows one to distinguish the MBL phase from a noninteracting localized phase and a delocalized phase. In particular, we show that for a properly chosen pulse sequence the MBL phase exhibits a characteristic power-lawdecay reflecting its slow growth of entanglement. We find that this power-lawdecay is robust with respect to thermal and disorder averaging, provide numerical simulations supporting our results, and discuss possible experimental realizations in solid-state and cold-atom systems.

引用

页数：5

共 42 条

[1]

[Anonymous], ARXIV13074092

[2]

[Anonymous], ARXIV13070507

[3] Unbounded Growth of Entanglement in Models of Many-Body Localization [J].