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论文类型：期刊论文

发表时间：2015-03-01

发表刊物：INTERNATIONAL JOURNAL OF QUANTUM INFORMATION

收录刊物：SCIE、Scopus

卷号：13

期号：2

ISSN号：0219-7499

关键字：Minimum RSP; von Neumann measurement; cavity QED; resources consumption

摘要：In this paper, we propose three schemes for remotely state preparation (RSP) an arbitrary two-level one-atom state via cavity quantum electro dynamics (QED) with minimal resources consumption. In the first case, a Greenberger-Horne-Zeilinger (GHZ) state is used as quantum channel; in the second case, the sender needs to construct an quantum channel with both of the assistant of cavity QED and the knowledge about the state to be remotely prepared. In each scheme, only 1 cbit and 1 ebit are needed with the aid of cavity QED. In the third case, we combine the first two protocols and give a theoretical proposal for controlled RSP with only 2 cbits and 1 ebit resources consumption.