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

doi:10.1088/1674-1056/23/4/040304

中国物理B ›› 2014, Vol. 23 ›› Issue (4): 40304-040304.doi: 10.1088/1674-1056/23/4/040304

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

曹聪^a, 刘刚^c, 张茹^{a b}, 王川^{a b}

a School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China;
b State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China;
c School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

收稿日期:2013-07-22 修回日期:2013-09-17 出版日期:2014-04-15 发布日期:2014-04-15
基金资助:
Project supported by the National Fundamental Research Program of China (Grant No. 2010CB923202), the Fundamental Research Funds for the Central Universities, China, and the National Natural Science Foundation of China (Grant Nos. 61177085, 61205117, and 61377097).

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

Cao Cong (曹聪)^a, Liu Gang (刘刚)^c, Zhang Ru (张茹)^{a b}, Wang Chuan (王川)^{a b}

a School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China;
b State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China;
c School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2013-07-22 Revised:2013-09-17 Online:2014-04-15 Published:2014-04-15
Contact: Wang Chuan E-mail:wangchuan82@gmail.com
About author:03.67.Lx; 42.50.Dv
Supported by:
Project supported by the National Fundamental Research Program of China (Grant No. 2010CB923202), the Fundamental Research Funds for the Central Universities, China, and the National Natural Science Foundation of China (Grant Nos. 61177085, 61205117, and 61377097).

摘要/Abstract

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.

关键词: N-qubit conditional phase gate, nitrogen-vacancy center, microtoroidal resonator

Abstract: 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.

Key words: N-qubit conditional phase gate, nitrogen-vacancy center, microtoroidal resonator

中图分类号: (Quantum computation architectures and implementations)

03.67.Lx

42.50.Dv (Quantum state engineering and measurements)

曹聪, 刘刚, 张茹, 王川. Implementation of a nonlocal N-qubit conditional phase gate using the nitrogen-vacancy center and microtoroidal resonator coupled systems[J]. 中国物理B, 2014, 23(4): 40304-040304.

Cao Cong (曹聪), Liu Gang (刘刚), Zhang Ru (张茹), Wang Chuan (王川). Implementation of a nonlocal N-qubit conditional phase gate using the nitrogen-vacancy center and microtoroidal resonator coupled systems[J]. Chin. Phys. B, 2014, 23(4): 40304-040304.

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

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

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