Dynamic Stabilization of a Quantum Many-Body Spin System

被引：49
|
作者：
Hoang, T. M. [1 ]
Gerving, C. S. [1 ]
Land, B. J. [1 ]
Anquez, M. [1 ]
Hamley, C. D. [1 ]
Chapman, M. S. [1 ]
机构：
[1] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA
来源：
PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 09期
基金：
美国国家科学基金会;
关键词：
BOSE-EINSTEIN CONDENSATE; NONEQUILIBRIUM DYNAMICS; ULTRACOLD GASES; MEAN-FIELD; DECOHERENCE; RESONANCES; LIMIT;
D O I：
10.1103/PhysRevLett.111.090403
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We demonstrate dynamic stabilization of a strongly interacting quantum spin system realized in a spin-1 atomic Bose-Einstein condensate. The spinor Bose-Einstein condensate is initialized to an unstable fixed point of the spin-nematic phase space, where subsequent free evolution gives rise to squeezing and quantum spin mixing. To stabilize the system, periodic microwave pulses are applied that rotate the spin-nematic many-body fluctuations and limit their growth. The stability diagram for the range of pulse periods and phase shifts that stabilize the dynamics is measured and compares well with a stability analysis.
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页数：5
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