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arXiv · 2303.15807

Topological Single Photon Emission from Quantum Emitter Chains

Yubin Wang·Huawen Xu·Xinyi Deng·Timothy Liew·Sanjib Ghosh·Qihua Xiong
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Abstract

We develop a scheme of generating highly indistinguishable single photons from an active quantum Su-Schrieffer-Heeger chain made from a collection of noisy quantum emitters. Surprisingly, the single photon emission spectrum of the active quantum chain is extremely narrow compared to that of a single emitter or topologically trivial chain. Moreover, this effect becomes dramatically strong close to the non-trivial-to-trivial phase transition point. Using this effect, we show that the single photon linewidth of a long topological quantum chain can become arbitrarily narrow, constituting an ideal source of indistinguishable single photons. Finally, taking specific examples of actual quantum emitters, we provide a microscopic and quantitative analysis of our model and analyze the most important parameters in view of the experimental realization.

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Yubin Wang, Huawen Xu, Xinyi Deng, Timothy Liew, Sanjib Ghosh, Qihua Xiong. 2023-03-28. Topological Single Photon Emission from Quantum Emitter Chains. https://arxiv.org/abs/2303.15807

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