Coupled quantum electrodynamics in photonic crystal nanocavities

2007/07/18 by Yun‐Feng Xiao, Yun-Feng Xiao, Jie Gao +19
Engineering · Physics and Astronomy · #FOS: Physical sciences #Photonic Crystals and Applications #Photonic and Optical Devices #Quantum Physics (quant-ph) #Quantum optics and atomic interactions #quant-ph

paper · pdf · doi:10.48550/arxiv.0707.2632

5 pages, 4 figures

openalex publication_date 2007/07/18 · arxiv created 2007/10/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We show that a scalable photonic crystal nanocavity array, in which single embedded quantum dots are coherently interacting, can perform as an universal single-operation quantum gate. In a passive system, the optical analogue of electromagnetically-induced-transparency is observed. The presence of a single two-level system in the array dramatically controls the spectral lineshapes. When each cavity couples with a two-level system, our scheme achieves two-qubit gate operations with high fidelity and low photon loss, even in the bad cavity limit and with non-ideal detuning and decoherence.

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