1Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026
2Department of Physics, Weifang University, Weifang 261043
3Department of Physics, Wenzhou Normal College, Wenzhou 325027
4Department of Physics, Foshan University, Foshan 528000
Faithful Telecloning with Multiparticle Entanglement
1Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026
2Department of Physics, Weifang University, Weifang 261043
3Department of Physics, Wenzhou Normal College, Wenzhou 325027
4Department of Physics, Foshan University, Foshan 528000
Abstract： We study the 1 → N faithful telecloning of two linear-independent states of a one-qubit system. Based on the analysis of the probabilistic cloning machine, we construct a multiparticle entangled state, and present a telecloning scheme under local operations and classical communication (LOCC). The success probability is greater than half of the optimal probability of the probabilistic cloning machine. Specifically, we show how to prepare the three-particle entangled state needed by 1 → 2 telecloning under LOCC using the Greenberger-Horne-Zeilinger state as resource. All the operations in 1 → 2 telecloning are within the reach of current technology.
2002, Vol. 19 
