Quantum controlled phase gate based on two nonresonant quantum dots trapped in two coupled photonic crystal cavities

2010/12/04 by Jian‐Qi Zhang, Jian-Qi Zhang, Ya-Fei Yu +7
Engineering · Physics and Astronomy · #FOS: Physical sciences #Optical Network Technologies #Photonic Crystals and Applications #Quantum Physics (quant-ph) #Semiconductor Lasers and Optical Devices #quant-ph

paper · pdf · doi:10.48550/arxiv.1012.0928

5 pages,1 figure The realizability in the experiment is complemented

openalex publication_date 2010/12/04 · arxiv created 2011/01/15 · arxiv updated 2015/03/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We propose a scheme for realizing two-qubit quantum phase gates with two nonidentical quantum dots trapped in two coupled photonic crystal cavities and driven by classical laser fields. During the gate operation, neither the cavity modes nor the quantum dots are excited, so the decoherence can be suppressed. The system can acquire a phase conditional upon the states of the quantum dots, which can be used to realize the controlled phase gate.

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