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A tunable waveguide-coupled cavity design for scalable interfaces to solid-state quantum emitters
Author(s) -
Sara Mouradian,
Dirk Englund
Publication year - 2017
Publication title -
apl photonics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.094
H-Index - 34
ISSN - 2378-0967
DOI - 10.1063/1.4978204
Subject(s) - diamond , materials science , optoelectronics , waveguide , photon , interfacing , photonics , single photon source , quantum , optics , quantum dot , physics , computer science , quantum mechanics , computer hardware , composite material
Photonic nanocavities in diamond have emerged as useful structures for interfacing photons and embedded atomic color centers, such as the nitrogen vacancy center. Here, we present a hybrid nanocavity design that enables (i) a loaded quality factor exceeding 50 000 (unloaded Q>106) with 75% of the enhanced emission collected into an underlying waveguide circuit, (ii) MEMS-based cavity spectral tuning without straining the diamond, and (iii) the use of a diamond waveguide with straight sidewalls to minimize surface defects and charge traps. This system addresses the need for scalable on-chip photonic interfaces to solid-state quantum emitters

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