Creation of coherence in Bose-Einstein condensates by atom detection

被引：15

作者：

Horak, P ^{[1
]}

Barnett, SM ^{[1
]}

机构：

[1] Univ Strathclyde, Dept Phys & Appl Phys, Glasgow G4 0NG, Lanark, Scotland

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1999年 / 32卷 / 14期

关键词：

D O I：

10.1088/0953-4075/32/14/312

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate the creation of a relative phase between two Bose-Einstein condensates, initially in number states, by detection of atoms and show how the system approaches a coherent state. Two very distinct time scales are found: one for the creation of the interference is of the order of the detection time for a few single atoms and another, for the preparation of coherent states, is of the order of the detection time for a significant fraction of the total number of atoms. Approximate analytic solutions are derived and compared with exact numerical results.

引用

页码：3421 / 3436

页数：16

共 25 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] ATOMIC COHERENT STATES IN QUANTUM OPTICS [J].

ARECCHI, FT ;

THOMAS, H ;

GILMORE, R ;

COURTENS, E .

PHYSICAL REVIEW A, 1972, 6 (06) :2211-&

[4]

Barnett S., 1997, Methods of Theoretical Quantum Optics

[5] 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

[6] Coherence, correlations, and collisions: What one learns about Bose-Einstein condensates from their decay [J].

Burt, EA ;

Ghrist, RW ;

Myatt, CJ ;

Holland, MJ ;

Cornell, EA ;

Wieman, CE .

PHYSICAL REVIEW LETTERS, 1997, 79 (03) :337-340

[7] Relative phase of two Bose-Einstein condensates [J].

Castin, Y ;

Dalibard, J .

PHYSICAL REVIEW A, 1997, 55 (06) :4330-4337

[8] Continuous observation of interference fringes from Bose condensates [J].

Cirac, JI ;

Gardiner, CW ;

Naraschewski, M ;

Zoller, P .

PHYSICAL REVIEW A, 1996, 54 (05) :R3714-R3717

[9] BOSE-EINSTEIN CONDENSATION IN A GAS OF SODIUM ATOMS [J].

DAVIS, KB ;

MEWES, MO ;

ANDREWS, MR ;

VANDRUTEN, NJ ;

DURFEE, DS ;

KURN, DM ;

KETTERLE, W .

PHYSICAL REVIEW LETTERS, 1995, 75 (22) :3969-3973

[10] Phase preparation by atom counting of Bose-Einstein condensates in mixed states [J].

Graham, R ;

Wong, T ;

Collett, MJ ;

Tan, SM ;

Walls, DF .

PHYSICAL REVIEW A, 1998, 57 (01) :493-502

← 1 2 3 →