Diabolical Points in Coupled Active Cavities with Quantum Emitters

Jingnan Yang; Chenjiang Qian; Xin Xie; Kai Peng; Shiyao Wu; Feilong Song; Sibai Sun; Jianchen Dang; Yang Yu; Shushu Shi; Jiongji He; Matthew J. Steer; Iain G. Thayne; Bei-Bei Li; Fang Bo; Yun-Feng Xiao; Zhanchun Zuo; Kuijuan Jin; Changzhi Gu; Xiulai Xu

doi:10.1038/s41377-020-0244-9

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arXiv · 2001.04596

Diabolical Points in Coupled Active Cavities with Quantum Emitters

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Abstract

In single microdisks, embedded active emitters intrinsically affect the cavity mode of microdisks, which results in a trivial symmetric backscattering and a low controllability. Here we propose a macroscopical control of the backscattering direction by optimizing the cavity size. The signature of positive and negative backscattering directions in each single microdisk is confirmed with two strongly coupled microdisks. Furthermore, the diabolical points are achieved at the resonance of two microdisks, which agrees well with the theoretical calculations considering backscattering directions. The diabolical points in active optical structures pave a way to implement quantum information processing with geometric phase in quantum photonic networks.

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Jingnan Yang, Chenjiang Qian, Xin Xie, Kai Peng, Shiyao Wu, Feilong Song, Sibai Sun, Jianchen Dang, Yang Yu, Shushu Shi, Jiongji He, Matthew J. Steer, Iain G. Thayne, Bei-Bei Li, Fang Bo, Yun-Feng Xiao, Zhanchun Zuo, Kuijuan Jin, Changzhi Gu, Xiulai Xu. 2020-01-14. Diabolical Points in Coupled Active Cavities with Quantum Emitters. https://doi.org/10.1038/s41377-020-0244-9

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