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【期刊论文】Quantum Dense Coding Exploiting a Bright Einstein-Podolsky-Rosen Beam
张靖, Xiaoying Li, Qing Pan, Jietai Jing, Jing Zhang, Changde Xie, and Kunchi Peng*
PHYSICAL REVIEW LETTERS 2002, 88 (4): 1~4,-0001,():
-1年11月30日
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.
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