Quantum dense coding exploiting a bright Einstein-Podolsky-Rosen beam

被引：417

作者：

Li, XY ^{[1
]}

Pan, Q

Jing, JT

Zhang, J

Xie, CD

Peng, KC

机构：

[1] State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan, Peoples R China

[2] Shanxi Univ, Inst Optoelect, Taiyuan 030006, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.88.047904

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Highly efficient quantum dense coding for continuous variables has been experimentally accomplished by means of exploiting a bright Einstein-Podolsky-Rosen (EPR) beam with anticorrelation of amplitude quadratures and correlation of phase quadratures. Two bits of classical information are encoded on two quadratures of a half of a bright EPR beam, then are simultaneously decoded by the other half of the EPR beam with the sensitivities beyond that of the shot noise limit. A high degree of immunity to unauthorized eavesdropping has been experimentally demonstrated.

引用

页码：4 / 479044

页数：4

共 29 条

[21] Continuous variable quantum cryptography [J].

Ralph, TC .

PHYSICAL REVIEW A, 2000, 61 (01) :4

[22] Sub-shot-noise high-sensitivity spectroscopy with optical parametric oscillator twin beams [J].

Ribeiro, PHS ;

Schwob, C ;

Maitre, A ;

Fabre, C .

OPTICS LETTERS, 1997, 22 (24) :1893-1895

[23] Bright squeezed-light generation by a continuous-wave semimonolithic parametric amplifier [J].

Schneider, K ;

Bruckmeier, R ;

Hansen, H ;

Schiller, S ;

Mlynek, J .

OPTICS LETTERS, 1996, 21 (17) :1396-1398

[24] Dense coding in photonic quantum communication with enhanced information capacity [J].

Shimizu, K ;

Imoto, N ;

Mukai, T .

PHYSICAL REVIEW A, 1999, 59 (02) :1092-1097

[25] Experimental realization of a quantum measurement for intensity difference fluctuation using a beam splitter [J].

Wang, H ;

Zhang, Y ;

Pan, Q ;

Su, H ;

Porzio, A ;

Xie, CD ;

Peng, KC .

PHYSICAL REVIEW LETTERS, 1999, 82 (07) :1414-1417

[26] PRECISION-MEASUREMENT BEYOND THE SHOT-NOISE LIMIT [J].

XIAO, M ;

WU, LA ;

KIMBLE, HJ .

PHYSICAL REVIEW LETTERS, 1987, 59 (03) :278-281

[27] Quantum teleportation and dense coding by means of bright amplitude-squeezed light and direct measurement of a Bell state [J].

Zhang, J ;

Peng, K .

PHYSICAL REVIEW A, 2000, 62 (06) :064302-064301

[28] Quantum variances and squeezing of output field from NOPA [J].

Zhang, Y ;

Su, H ;

Xie, CD ;

Peng, KC .

PHYSICS LETTERS A, 1999, 259 (3-4) :171-177

[29]

Zhang Y, 2000, PHYS REV A, V62, DOI 10.1103/PhysRevA.62.023813

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