Controlled phase gates based on two nonidentical quantum dots trapped in separate cavities |
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| Authors: | Wang Xiao-Xi Zhang Jian-Qi Yu Ya-Fei and Zhang Zhi-Ming |
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| Institution: | Laboratory of Photonic Information Technology, SIPSE and LQIT, South China Normal University, Guangzhou 510006, China;Laboratory of Photonic Information Technology, SIPSE and LQIT, South China Normal University, Guangzhou 510006, China;Laboratory of Photonic Information Technology, SIPSE and LQIT, South China Normal University, Guangzhou 510006, China;Laboratory of Photonic Information Technology, SIPSE and LQIT, South China Normal University, Guangzhou 510006, China |
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| 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. |
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| Keywords: | entanglement quantum information quantum dot |
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