Scheme for splitting quantum information via W states in cavity QED systems

Scheme for splitting quantum information via W

states in cavity QED systems

Yu Xi-Mei;Gu Yong-Jian;Ma Li-Zhen;Zhou Bang-An

【期刊名称】《中国物理：英文版》 【年(卷),期】2008(017)002

【摘要】Assisted by multipartite entanglement,Quantum information may be split so that the original qubit can be reconstructed if and only if the recipients cooperate.This paper proposes an experimentally feasible scheme for splitting quantum information via W-type entangled states in cavity QED systems,where three-level Rydberg atoms interact with nonresonant cavities.Since W-type states are used as the quantum channel and the cavities are only virtually excited,the scheme is easy to implement and robust against decoherence,and the dependence on the quality factor of the cavities is greatly reduced. 【总页数】5页(462-466)

【关键词】splitting quantum information,W-type states,cavity QED 【作者】Yu Xi-Mei;Gu Yong-Jian;Ma Li-Zhen;Zhou Bang-An

【作者单位】Department of Physics,Ocean University of China,Qingdao 266100,China;Department of Physics,Ocean University of China,Qingdao 266100,China;Department of Physics,Ocean University of China,Qingdao 266100,China;Weifang Education TV,Weifang 261041,China 【正文语种】中文