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DOE OSTI · 1834969

A vertically-loaded diamond microdisk resonator spin-photon interface

Duan, Yuqin·Chen, Kevin C.·Englund, Dirk R.·Trusheim, Matthew E. (ORCID:0000000331975989)
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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 (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.

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Duan, Yuqin, Chen, Kevin C., Englund, Dirk R., Trusheim, Matthew E. (ORCID:0000000331975989). 2021-12-09. A vertically-loaded diamond microdisk resonator spin-photon interface. https://doi.org/10.1364/oe.442834

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