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arXiv · 2105.05695

A vertically-loaded diamond microdisk resonator spin-photon interface

Yuqin Duan·Kevin C. Chen·Dirk R. Englund·Matthew E. Trusheim
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Abstract

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 ($\text{NA}$) free-space modes. The VLDMoRt achieves a Purcell enhancement of 172 with $39\%$ of the emitted light collected within a $\text{NA}$ 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.

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Yuqin Duan, Kevin C. Chen, Dirk R. Englund, Matthew E. Trusheim. 2021-05-12. A vertically-loaded diamond microdisk resonator spin-photon interface. https://doi.org/10.1364/oe.442834

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