Two-mode Schrodinger cats, entanglement and teleportation

被引:7
作者
Janszky, J
Asbóth, J
Gábris, A
Vukics, A
Koniorczyk, M
Kobayashi, T
机构
[1] Hungarian Acad Sci, Res Ins Solid State Phys & Opt, H-1525 Budapest, Hungary
[2] Univ Pecs, Inst Phys, H-7624 Pecs, Hungary
[3] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 113, Japan
来源
FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS | 2003年 / 51卷 / 2-3期
关键词
D O I
10.1002/prop.200310020
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Two-mode Schrodinger cats consisting of two and four coherent-state terms are considered. It is shown that they are closely related to the quadrature entangled EPR pair. The properties of their wave functions are investigated from their aspects of entanglement. It is shown that at certain parameters the entangled properties of the two-mode Schrodinger cats allow for good teleportation fidelity. A theoretical generalization to the teleportation of two qubits is also discussed.
引用
收藏
页码:157 / 171
页数:15
相关论文
共 10 条
[1]   ENTROPY AS A MEASURE OF QUANTUM OPTICAL CORRELATION [J].
BARNETT, SM ;
PHOENIX, SJD .
PHYSICAL REVIEW A, 1989, 40 (05) :2404-2409
[2]   PHOTON STATISTICS OF 2-MODE SQUEEZED STATES AND INTERFERENCE IN 4-DIMENSIONAL PHASE-SPACE [J].
CAVES, CM ;
ZHU, C ;
MILBURN, GJ ;
SCHLEICH, W .
PHYSICAL REVIEW A, 1991, 43 (07) :3854-3861
[3]   2-MODE NONCLASSICAL STATE VIA SUPERPOSITIONS OF 2-MODE COHERENT STATES [J].
CHAI, CL .
PHYSICAL REVIEW A, 1992, 46 (11) :7187-7191
[4]   INTERACTION OF SCHRODINGER CATS IN OPTICAL PROCESSES [J].
DOMOKOS, P ;
JANSZKY, J .
PHYSICS LETTERS A, 1994, 186 (04) :289-299
[5]   Quantum-information processing for a coherent superposition state via a mixed entangled coherent channel [J].
Jeong, H ;
Kim, MS ;
Lee, J .
PHYSICAL REVIEW A, 2001, 64 (05) :7
[6]   General optical state truncation and its teleportation -: art. no. 013802 [J].
Koniorczyk, M ;
Kurucz, Z ;
Gábris, A ;
Janszky, J .
PHYSICAL REVIEW A, 2000, 62 (01) :8
[7]  
Kurucz Z, 2001, FORTSCHR PHYS, V49, P1019, DOI 10.1002/1521-3978(200110)49:10/11<1019::AID-PROP1019>3.0.CO
[8]  
2-Z
[9]   Photon chopping: New way to measure the quantum state of light [J].
Paul, H ;
Torma, P ;
Kiss, T ;
Jex, I .
PHYSICAL REVIEW LETTERS, 1996, 76 (14) :2464-2467
[10]   Entangled coherent states: Teleportation and decoherence [J].
van Enk, SJ ;
Hirota, O .
PHYSICAL REVIEW A, 2001, 64 (02) :1-6