Adiabatic entangling gate of Bose-Einstein condensates based on the minimum function

被引：8

作者：

Ortiz, Sergi ^{[1
,2
,3
,4
]}

Song, Yilun ^{[2
]}

Wu, June ^{[2
,5
]}

Ivannikov, Valentin ^{[1
,2
]}

Byrnes, Tim ^{[1
,2
,3
,6
,7
]}

机构：

[1] East China Normal Univ, Sch Phys & Mat Sci, State Key Lab Precis Spect, Shanghai 200062, Peoples R China

[2] New York Univ Shanghai, 1555 Century Ave, Shanghai 200122, Peoples R China

[3] Natl Inst Informat, Chiyoda Ku, 2-1-2 Hitotsubashi, Tokyo 1018430, Japan

[4] Univ Politecn Cataluna, 31 Jordi Girona, Barcelona 08034, Spain

[5] NYU, Courant Inst Math Sci, 251 Mercer St, New York, NY 10012 USA

[6] NYU Shanghai, NYU ECNU Inst Phys, 3663 Zhongshan Rd North, Shanghai 200062, Peoples R China

[7] NYU, Dept Phys, 4 Washington Pl, New York, NY 10003 USA

来源：

PHYSICAL REVIEW A | 2018年 / 98卷 / 04期

基金：

中国国家自然科学基金;

关键词：

QUANTUM TELEPORTATION; ENTANGLEMENT; STATES; CHIP; INFORMATION; METROLOGY; OBJECTS; CAVITY;

D O I：

10.1103/PhysRevA.98.043616

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A scheme is presented to perform an entangling gate between two atomic ensembles or Bose-Einstein condensates in a optical cavity with a common optical mode. The method involves using a generalized stimulated Raman adiabatic passage (STIRAP) to adiabatically evolve the ground state. We show that dark states exist for any atom number within the cavities and find that the operation produces an unusual type of evolution where the minimum of the number of atoms between two level transitions to another state. This produces an unconventional type of entangling Hamiltonian which creates a phase depending on the minimum operation. We analyze its reliability under a variety of conditions ranging from the ideal decoherence- free case to that including photon loss and spontaneous emission. Ways of combating decoherence are analyzed, and the amount of entanglement that is generated is calculated.

引用

页数：12