Parametric-squeezing amplification of Bose-Einstein condensates

被引：7

作者：

Jaeger, Georg ^{[1
]}

Berrada, Tarik ^{[2
]}

Schmiedmayer, Joerg ^{[2
]}

Schumm, Thorsten ^{[2
]}

Hohenester, Ulrich ^{[1
]}

机构：

[1] Karl Franzens Univ Graz, Inst Phys, Univ Pl 5, A-8010 Graz, Austria

[2] TU Wien, Atominst, Vienna Ctr Quantum Sci & Technol, A-1020 Vienna, Austria

来源：

PHYSICAL REVIEW A | 2015年 / 92卷 / 05期

基金：

奥地利科学基金会;

关键词：

DOUBLE-WELL; INTERFEROMETRY; STATES; ENTANGLEMENT; OPTICS; ATOMS;

D O I：

10.1103/PhysRevA.92.053632

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We theoretically investigate the creation of squeezed states of a Bose-Einstein condensate (BEC) trapped in a magnetic double-well potential. The number or phase squeezed states are created by modulating the tunnel coupling between the two wells periodically with twice the Josephson frequency, i.e., through parametric amplification. Simulations are performed with the multiconfigurational time-dependent Hartree method for bosons. We employ optimal control theory to bring the condensate to a complete halt at a final time, thus creating a highly squeezed state (squeezing factor of 0.12, xi(2)(S) = -18 dB) suitable for atom interferometry.

引用

页数：8

共 50 条

[1] Optimal control of number squeezing in trapped Bose-Einstein condensates
Grond, Julian
von Winckel, Gregory
Schmiedmayer, Joerg
Hohenester, Ulrich
PHYSICAL REVIEW A, 2009, 80 (05):
[2] Twist-and-turn spin squeezing in Bose-Einstein condensates
Muessel, W.
Strobel, H.
Linnemann, D.
Zibold, T.
Julia-Diaz, B.
Oberthaler, M. K.
PHYSICAL REVIEW A, 2015, 92 (02):
[3] Tradeoffs for number squeezing in collisions of Bose-Einstein condensates
Deuar, P.
Wasak, T.
Zin, P.
Chwedenczuk, J.
Trippenbach, M.
PHYSICAL REVIEW A, 2013, 88 (01):
[4] Squeezing in Bose-Einstein condensates with large numbers of atoms
Johnsson, Mattias T.
Dennis, Graham R.
Hope, Joseph J.
NEW JOURNAL OF PHYSICS, 2013, 15
[5] Spin Squeezing in Highly Anisotropic Bose-Einstein Condensates
Ding Xiong
Huang Guo-Qiang
Luo Cui-Lan
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2015, 54 (04) : 1122 - 1127
[6] Limit of spin squeezing in trapped Bose-Einstein condensates
Sinatra, Alice
Castin, Yvan
Witkowska, Emilia
EPL, 2013, 102 (04)
[7] Quantum Entanglement and Spin Squeezing of Two Species Bose-Einstein Condensates
Li, Song-Song
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2016, 55 (09) : 3799 - 3806
[8] Spin squeezing, entanglement and quantum metrology with Bose-Einstein condensates
Gross, Christian
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2012, 45 (10)
[9] Squeezing and entanglement in two-mode Bose-Einstein condensates
Li, Song-Song
INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2017, 15 (06)
[10] Measuring and engineering entropy and spin squeezing in weakly linked Bose-Einstein condensates
Cattani, F.
Gross, C.
Oberthaler, M. K.
Ruostekoski, J.
NEW JOURNAL OF PHYSICS, 2013, 15

← 1 2 3 4 5 →