Implementation of a nonlocal N-qubit conditional phase gate using the nitrogen-vacancy center and microtoroidal resonator coupled systems

被引:4
|
作者
Cao Cong [1 ]
Liu Gang [3 ]
Zhang Ru [1 ,2 ]
Wang Chuan [1 ,2 ]
机构
[1] Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China
[2] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China
[3] Beijing Univ Posts & Telecommun, Sch Elect Engn, Beijing 100876, Peoples R China
基金
中国国家自然科学基金;
关键词
N-qubit conditional phase gate; nitrogen-vacancy center; microtoroidal resonator; ENTANGLEMENT PURIFICATION; SINGLE SPINS; W STATE; QUANTUM; PHOTON; COHERENCE; SCHEME;
D O I
10.1088/1674-1056/23/4/040304
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Implementation of a nonlocal multi-qubit conditional phase gate is an essential requirement in some quantum information processing (QIP) tasks. Recently, a novel solid-state cavity quantum electrodynamics (QED) system, in which the nitrogen-vacancy (NV) center in diamond is coupled to a microtoroidal resonator (MTR), has been proposed as a potential system for hybrid quantum information and computing. By virtue of such systems, we present a scheme to realize a nonlocal N-qubit conditional phase gate directly. Our scheme employs a cavity input-output process and single-photon interference, without the use of any auxiliary entanglement pair or classical communication. Considering the currently available technologies, our scheme might be quite useful among different nodes in quantum networks for large-scaled QIP.
引用
收藏
页数:5
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