Cavity QED on a nanofiber using a composite photonic crystal cavity
Ramachandrarao Yalla, Mark Sadgrove, Kali P. Nayak, and Kohzo Hakuta
TL;DR
This paper demonstrates cavity QED conditions on a nanofiber using a composite photonic crystal cavity, significantly enhancing spontaneous emission for quantum dots, advancing on-fiber quantum interfaces.
Contribution
It introduces a novel composite photonic crystal cavity on a nanofiber, enabling strong light-matter interactions for quantum emitters.
Findings
Enhanced spontaneous emission into guided modes
Achieved Purcell regime for single quantum emitters
Potential for improved quantum networks
Abstract
We demonstrate cavity QED conditions in the Purcell regime for single quantum emitters on the surface of an optical nanofiber. The cavity is formed by combining an optical nanofiber and a nanofabricated grating to create a composite photonic crystal cavity. Using this technique, significant enhancement of the spontaneous emission rate into the nanofiber guided modes is observed for single quantum dots. Our results pave the way for enhanced on-fiber light-matter interfaces with clear applications to quantum networks.
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