期刊
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
卷 43, 期 6, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/43/6/065501
关键词
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资金
- National Basic Research Program of China (973 Program) [2007CB311203]
- National Natural Science Foundation of China
- Research Grants Council of Hong Kong Joint Research Scheme [60731160626]
- National Natural Science Foundation of China [60821001]
- Chinese Universities [BUPT2009RC0220]
- 111 Project [B08004]
Our concern is to design some deterministic schemes for remotely preparing an arbitrary W-class state from one sender to one of a number of receivers. Compared with previous remote preparation schemes, the real receiver in our schemes is unknown to the sender. Firstly, by introducing a novel entanglement transformation the sender can deterministically prepare an arbitrary W-class state with complex spectra to one of two remote receivers via two four-particle GHZ states as the quantum channel. As for preparing a W-class state with real spectra, by constructing a general and useful measurement basis for the sender, another economical protocol can be designed with unit success probability. These schemes are extended to multiparties via two multi-particle GHZ states as the quantum channel. The classical communication costs of all the schemes are calculated to determine the classical resources required.
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