Controlled phase gates based on two nonidentical quantum dots trapped in separate cavities

doi:10.1088/1674-1056/20/11/110306

中国物理B ›› 2011, Vol. 20 ›› Issue (11): 110306-110306.doi: 10.1088/1674-1056/20/11/110306

Controlled phase gates based on two nonidentical quantum dots trapped in separate cavities

王晓霞, 张建奇, 於亚飞, 张智明

Laboratory of Photonic Information Technology, SIPSE and LQIT, South China Normal University, Guangzhou 510006, China

收稿日期:2011-04-04 修回日期:2011-06-30 出版日期:2011-11-15 发布日期:2011-11-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 60978009) and the National Basic Research Program of China (Grant Nos. 2007CB925204 and 2009CB929604).

Controlled phase gates based on two nonidentical quantum dots trapped in separate cavities

Wang Xiao-Xia(王晓霞), Zhang Jian-Qi(张建奇), Yu Ya-Fei(於亚飞)^†, and Zhang Zhi-Ming(张智明)^‡

Laboratory of Photonic Information Technology, SIPSE and LQIT, South China Normal University, Guangzhou 510006, China

Received:2011-04-04 Revised:2011-06-30 Online:2011-11-15 Published:2011-11-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 60978009) and the National Basic Research Program of China (Grant Nos. 2007CB925204 and 2009CB929604).

摘要/Abstract

摘要： We propose a scheme for realizing two-qubit controlled phase gates on two nonidentical quantum dots trapped in separate cavities. In our scheme, each dot simultaneously interacts with one highly detuned cavity mode and two strong driven classical fields. During the gate operation, the quantum dots undergo no transition, while the system can acquire different phases conditional on different states of the quantum dots. With the application of the single-qubit operations, two-qubit controlled phase gates can be realized.

Abstract: We propose a scheme for realizing two-qubit controlled phase gates on two nonidentical quantum dots trapped in separate cavities. In our scheme, each dot simultaneously interacts with one highly detuned cavity mode and two strong driven classical fields. During the gate operation, the quantum dots undergo no transition, while the system can acquire different phases conditional on different states of the quantum dots. With the application of the single-qubit operations, two-qubit controlled phase gates can be realized.

Key words: entanglement, quantum information, quantum dot

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

03.67.Lx

42.50.Pq (Cavity quantum electrodynamics; micromasers) 73.21.La (Quantum dots)

王晓霞, 张建奇, 於亚飞, 张智明. Controlled phase gates based on two nonidentical quantum dots trapped in separate cavities[J]. 中国物理B, 2011, 20(11): 110306-110306.

Wang Xiao-Xia(王晓霞), Zhang Jian-Qi(张建奇), Yu Ya-Fei(於亚飞), and Zhang Zhi-Ming(张智明) . Controlled phase gates based on two nonidentical quantum dots trapped in separate cavities[J]. Chin. Phys. B, 2011, 20(11): 110306-110306.

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Controlled phase gates based on two nonidentical quantum dots trapped in separate cavities

Controlled phase gates based on two nonidentical quantum dots trapped in separate cavities

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