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Conference on Lasers and Electro-Optics

A Vertically Loaded Diamond Microdisk Resonator (VLDMoRt) towards a Scalable Quantum Network

Yuqin Duan, Kevin C. Chen, Dirk Englund, Matthew E. Trusheim

Published Jan 1, 2021• 0 citations
Publisher

Abstract

We design and fabricate a vertically loaded diamond microdisk resonator (VLDMoRt) that enhances spin-photon entanglement generation and free-space fiber- matched coupling rate from quantum emitters.
DOI
10.1364/cleo_at.2021.jw4l.6

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We propose and optimize a vertically-loaded diamond microdisk resonator (VLDMoRt) coupled to a nitrogen-vacancy (NV) center in diamond for efficient collection of fluorescence emission into low numerical aperture (NA\text{NA}NA) free-space modes. The VLDMoRt achieves a Purcell enhancement of 172 with 39\% of the emitted light collected within a NA\text{NA}NA of 0.6, leading to a total external spin-photon collection efficiency of 0.33. As the design is compatible with established nanofabrication techniques and couples to low-NA\text{NA}NA modes accessible by cryogenic free-space optical systems, it is a promising avenue for increasing the efficiency and scalability of quantum devices based on diamond quantum emitters.
We propose and optimize a vertically-loaded diamond microdisk resonator (VLDMoRt) coupled to a nitrogen-vacancy (NV) center in diamond for efficient collection of zero-phonon-line emission into low numerical aperture (NA) free-space modes. The VLDMoRt achieves a Purcell enhancement of 172 with 39% of the emitted light collected within a NA of 0.6, leading to a total external spin-photon collection efficiency of 0.33. As the design is compatible with established nanofabrication techniques and couples to low-NA modes accessible by cryogenic free-space optical systems, it is a promising platform for efficient spin-photon interfaces based on diamond quantum emitters.