Entanglement dynamics in Majorana representation

被引：1

作者：

Cao Hui ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China

来源：

ACTA PHYSICA SINICA | 2013年 / 62卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Majorana representation; quantum entanglement; ATOMS;

D O I：

10.7498/aps.62.030303

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

With the help of the newly proposed definition of entanglement, the entanglement dynamics of a system composed of two bosonic atoms trapped in a symmetric double-well potential is investigated. For any state of this system, the description of Majorana representation can be analytically derived. It is found that the entanglement dynamics depends on both the atomic interaction and the initial state of the system. Specifically, the atomic interaction determines the oscillation frequency of the entanglement degree, whereas the initial state controls the oscillation amplitude.

引用

页数：6

共 25 条

[1] QUANTUM CRYPTOGRAPHY USING ANY 2 NONORTHOGONAL STATES [J].

BENNETT, CH .

PHYSICAL REVIEW LETTERS, 1992, 68 (21) :3121-3124

[2] Quantum Geometric Phase in Majorana's Stellar Representation: Mapping onto a Many-Body Aharonov-Bohm Phase [J].

Bruno, Patrick .

PHYSICAL REVIEW LETTERS, 2012, 108 (24)

[3] Correlated tunneling of cold atoms in double-well potential [J].

Cao Hui ;

Zhao Qing .

ACTA PHYSICA SINICA, 2010, 59 (04) :2187-2192

[4]

Chuang I. N., 2000, Quantum Computation and Quantum Information

[5] Direct observation of second-order atom tunnelling [J].

Foelling, S. ;

Trotzky, S. ;

Cheinet, P. ;

Feld, M. ;

Saers, R. ;

Widera, A. ;

Mueller, T. ;

Bloch, I. .

NATURE, 2007, 448 (7157) :1029-U4

[6] Quantum entanglement manifestation of transition to nonlinear self-trapping for Bose-Einstein condensates in a symmetric double well [J].

Fu, L. ;

Liu, J. .

PHYSICAL REVIEW A, 2006, 74 (06)

[7] Barycentric measure of quantum entanglement [J].

Ganczarek, Wojciech ;

Kus, Marek ;

Zyczkowski, Karol .

PHYSICAL REVIEW A, 2012, 85 (03)

[8] Entanglement detection [J].

Guehne, Otfried ;

Toth, Geza .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2009, 474 (1-6) :1-75

[9] 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

[10] Quantum entanglement [J].

Horodecki, Ryszard ;

Horodecki, Pawel ;

Horodecki, Michal ;

Horodecki, Karol .

REVIEWS OF MODERN PHYSICS, 2009, 81 (02) :865-942

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