Creating unconventional geometric phase gate using squeeze-like operator assisted by strong driving field
Zhu Ai-Dong(朱爱东)a)b)†, Zhang Shou(张寿)a)b)‡, Yeon Kyu-Hwangc), Yu Seong-Choc), and Um Chung-Ind)
a Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, Chinab Department of Physics, College of Science, Yanbian University, Yanji 133002, China; c Department of Physics & BK21 Program for Device Physics, College of Natural Science, Chungbuk National University, Cheonju, Chungbuk 361-763, Republic of Korea; d Department of Physics, College of Science, Korea University, Seoul 136-701, Republic of Korea
Abstract Based on the idea that a squeezing process can be thought of as a total cumulative effect of a large number of tiny squeezing processes, we define a squeeze-like operator with a time-dependent squeeze parameter. Applying this operator to and combining with a system which includes a two-photon interaction between two atoms and an initial vacuum cavity field, and resorting to a resonant strong driving classical field, we obtain an unconventional geometric phase gate with a shorter gating time.
Received: 24 August 2006
Revised: 04 January 2007
Accepted manuscript online:
Fund: Project
supported by the National Natural Science Foundation of China
(Grant No 60667001).
Cite this article:
Zhu Ai-Dong(朱爱东), Zhang Shou(张寿), Yeon Kyu-Hwang, Yu Seong-Cho, and Um Chung-In Creating unconventional geometric phase gate using squeeze-like operator assisted by strong driving field 2007 Chinese Physics 16 1559
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