Non-Geometric Conditional Phase Gate by Quantum Zeno Dynamics in Laser-Excited Nitrogen-Vacancy Centers

苏万钧; 沈利托; 吴怀志; 林秀

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理论物理通讯 ›› 2013, Vol. 59 ›› Issue (01) : 11-16.

Non-Geometric Conditional Phase Gate by Quantum Zeno Dynamics in Laser-Excited Nitrogen-Vacancy Centers

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Non-Geometric Conditional Phase Gate by Quantum Zeno Dynamics in Laser-Excited Nitrogen-Vacancy Centers

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摘要

Based on the quantum Zeno dynamics, we propose a two-qubit non-geometric conditional phase gate between two nitrogen-vacancy centers coupled to a whispering-gallery mode cavity. The varying phases design of periodic laser can be used for realizing non-geometric conditional phase gate, and the cavity mode is virtually excited during the gate operation. Thus, the fidelity of the gate operation is insensitive to cavity decay and the fluctuation of the preset laser intensity. The numerical simulation with a realistic set of experimental parameters shows that the gate fidelity 0.987 can be within reached in the near future.

Abstract

导出引用

苏万钧, 沈利托, 吴怀志, 等. Non-Geometric Conditional Phase Gate by Quantum Zeno Dynamics in Laser-Excited Nitrogen-Vacancy Centers[J]. 理论物理通讯, 2013, 59(01): 11-16

SU Wan-Jun, SHEN Li-Tuo, WU Huai-Zhi, et al. Non-Geometric Conditional Phase Gate by Quantum Zeno Dynamics in Laser-Excited Nitrogen-Vacancy Centers[J]. Communications in Theoretical Physics, 2013, 59(01): 11-16

中图分类号： 03.65.Xp 03.65.Vf 42.50.Dv 42.50.Pq

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基金

Supported by the National Fundamental Research Program under Grant No. 2012CB921601, National Natural Science Foundation of China under Grant No. 10974028, the Doctoral Foundation of the Ministry of Education of China under Grant No. 20093514110009, and the Natural Science Foundation of Fujian Province under Grant No. 2009J06002