Storage of spin squeezing in a two-component bose-Einstein condensate

被引：64
作者：
Jin, Guang-Ri
Kim, Sang Wook
机构：
[1] Pusan Natl Univ, Dept Phys, Pusan 609735, South Korea
[2] Pusan Natl Univ, Dept Phys Educ, Pusan 609735, South Korea
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 17期
关键词：
D O I：
10.1103/PhysRevLett.99.170405
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A simple scheme for storage of spin squeezing in a two-component Bose-Einstein condensate is investigated by considering rapidly turning-off the external field at a time that maximal spin squeezing occurs. We show that strong reduction of spin fluctuation can be maintained in a nearly fixed direction. We explain the underlying physics using the phase model and present analytical expressions of the maximal-squeezing time and the corresponding squeezing parameter.
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页数：4
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共 32 条
[1]   COLLAPSE AND REVIVAL PHENOMENON IN THE EVOLUTION OF A RESONANT FIELD IN A KERR-LIKE MEDIUM [J].
AGARWAL, GS ;
PURI, RR .
PHYSICAL REVIEW A, 1989, 39 (06) :2969-2977
[2]   Quantum superposition states of Bose-Einstein condensates [J].
Cirac, JI ;
Lewenstein, M ;
Molmer, K ;
Zoller, P .
PHYSICAL REVIEW A, 1998, 57 (02) :1208-1218
[3]   RETRACTED: Real-time quantum feedback control of atomic spin-squeezing (Retracted Article. See vol 321, pg 489, 2008) [J].
Geremia, JM ;
Stockton, JK ;
Mabuchi, H .
SCIENCE, 2004, 304 (5668) :270-273
[4]   Creating macroscopic quantum superpositions with Bose-Einstein condensates [J].
Gordon, D ;
Savage, CM .
PHYSICAL REVIEW A, 1999, 59 (06) :4623-4629
[5]   Spin squeezed atoms: A macroscopic entangled ensemble created by light [J].
Hald, J ;
Sorensen, JL ;
Schori, C ;
Polzik, ES .
PHYSICAL REVIEW LETTERS, 1999, 83 (07) :1319-1322
[6]   Measurements of relative phase in two-component Bose-Einstein condensates [J].
Hall, DS ;
Matthews, MR ;
Wieman, CE ;
Cornell, EA .
PHYSICAL REVIEW LETTERS, 1998, 81 (08) :1543-1546
[7]   Dynamics of component separation in a binary mixture of Bose-Einstein condensates [J].
Hall, DS ;
Matthews, MR ;
Ensher, JR ;
Wieman, CE ;
Cornell, EA .
PHYSICAL REVIEW LETTERS, 1998, 81 (08) :1539-1542
[8]   Creating massive entanglement of Bose-Einstein condensed atoms [J].
Helmerson, K ;
You, L .
PHYSICAL REVIEW LETTERS, 2001, 87 (17) :170402-170402
[9]   Dynamically turning off interactions in a two-component condensate [J].
Jaksch, D ;
Cirac, JI ;
Zoller, P .
PHYSICAL REVIEW A, 2002, 65 (03) :7
[10]   Uniting Bose-Einstein condensates in optical resonators [J].
Jaksch, D ;
Gardiner, SA ;
Schulze, K ;
Cirac, JI ;
Zoller, P .
PHYSICAL REVIEW LETTERS, 2001, 86 (21) :4733-4736
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