Measurements of relative phase in two-component Bose-Einstein condensates

被引:418
作者
Hall, DS [1 ]
Matthews, MR
Wieman, CE
Cornell, EA
机构
[1] Univ Colorado, Natl Inst Stand & Technol, JILA, Boulder, CO 80309 USA
[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA
关键词
D O I
10.1103/PhysRevLett.81.1543
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have measured the relative phase of two Bose-Einstein condensates using a time-domain, separated-oscillatory-field condensate interferometer. A single two-photon coupling pulse prepares the double-condensate system with a well-defined relative phase; at a later time, a second pulse reads out the phase difference accumulated between the two condensates. We find that the accumulated phase difference reproduces from realization to realization of the experiment, even after the individual components have separated spatially and their relative center-of-mass motion has damped.
引用
收藏
页码:1543 / 1546
页数:4
相关论文
共 35 条
[1]   OBSERVATION OF BOSE-EINSTEIN CONDENSATION IN A DILUTE ATOMIC VAPOR [J].
ANDERSON, MH ;
ENSHER, JR ;
MATTHEWS, MR ;
WIEMAN, CE ;
CORNELL, EA .
SCIENCE, 1995, 269 (5221) :198-201
[2]   Observation of interference between two Bose condensates [J].
Andrews, MR ;
Townsend, CG ;
Miesner, HJ ;
Durfee, DS ;
Kurn, DM ;
Ketterle, W .
SCIENCE, 1997, 275 (5300) :637-641
[3]   Direct measurement of the current-phase relation of a superfluid He-3-B weak link [J].
Backhaus, S ;
Pereverzev, SV ;
Loshak, A ;
Davis, JC ;
Packard, RE .
SCIENCE, 1997, 278 (5342) :1435-1438
[4]   Why a condensate can be thought of as having a definite phase [J].
Barnett, SM ;
Burnett, K ;
Vaccaro, JA .
JOURNAL OF RESEARCH OF THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY, 1996, 101 (04) :593-600
[5]   Evidence of Bose-Einstein condensation in an atomic gas with attractive interactions (vol 75, pg 1687, 1995) [J].
Bradley, CC ;
Sackett, CA ;
Tollett, JJ ;
Hulet, RG .
PHYSICAL REVIEW LETTERS, 1997, 79 (06) :1170-1170
[6]   EVIDENCE OF BOSE-EINSTEIN CONDENSATION IN AN ATOMIC GAS WITH ATTRACTIVE INTERACTIONS [J].
BRADLEY, CC ;
SACKETT, CA ;
TOLLETT, JJ ;
HULET, RG .
PHYSICAL REVIEW LETTERS, 1995, 75 (09) :1687-1690
[7]   Observing the progressive decoherence of the ''meter'' in a quantum measurement [J].
Brune, M ;
Hagley, E ;
Dreyer, J ;
Maitre, X ;
Maali, A ;
Wunderlich, C ;
Raimond, JM ;
Haroche, S .
PHYSICAL REVIEW LETTERS, 1996, 77 (24) :4887-4890
[8]   INFLUENCE OF DAMPING ON QUANTUM INTERFERENCE - AN EXACTLY SOLUBLE MODEL [J].
CALDEIRA, AO ;
LEGGETT, AJ .
PHYSICAL REVIEW A, 1985, 31 (02) :1059-1066
[9]   Relative phase of two Bose-Einstein condensates [J].
Castin, Y ;
Dalibard, J .
PHYSICAL REVIEW A, 1997, 55 (06) :4330-4337
[10]  
CORNELL EA, IN PRESS J LOW TEMP