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

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 u...

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Bibliographic Details
Published inChinese physics B Vol. 20; no. 11; pp. 79 - 83
Main Author 王晓霞 张建奇 於亚飞 张智明
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.11.2011
Subjects
Gates
Holes
Phase transformations
Quantum dots
基础
控制相
操作过程
量子比特
量子点
Online AccessGet full text
ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/20/11/110306

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Summary: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.
Bibliography: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.
11-5639/O4
entanglement; quantum information;quantum dot
Wang Xiao-Xia,Zhang Jian-Qi,Yu Ya-Fei,Zhang Zhi-Ming（Laboratory of Photonic Information Technology, SIPSE and LQIT, South China Normal University, Cuangzhou 510006, China）
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ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/20/11/110306