27a-YQ-6 Quantum telecloning and multiparticle entanglement

Li-Hua Yan, Gao Yun-feng, Jian-Gang Zhao

Mio Murao, Daniel Jonathan, Martin Bodo Plenio +1 more

A quantum telecloning process combining quantum teleportation and optimal quantum cloning from one input to M outputs is presented. The scheme relies on the establishment of particular multiparticle entangled states, which function as multiuser quantum information channels. The entanglement structure of these states is analyzed and shown to be crucial for this type of information processing.

Chris Doran, Anthony Norden Lasenby

이혁재

Gu Yong-Jian, Yi-Zhuang Zheng, Libing Chen +1 more

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 a resource. All the operations in 1→2 telecloning are within the reach of current technology.

Yanhua H. Shih