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arXiv · 0707.2632

Coupled quantum electrodynamics in photonic crystal nanocavities

Yun-Feng Xiao·Jie Gao·Xu-Bo Zou·James F. McMillan·Xiaodong Yang·You-Ling Chen·Zheng-Fu Han·Guang-Can Guo·Chee Wei Wong
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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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Yun-Feng Xiao, Jie Gao, Xu-Bo Zou, James F. McMillan, Xiaodong Yang, You-Ling Chen, Zheng-Fu Han, Guang-Can Guo, Chee Wei Wong. 2007-10-31. Coupled quantum electrodynamics in photonic crystal nanocavities. https://arxiv.org/abs/0707.2632

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