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Title: Deterministic coupling of delta-doped nitrogen vacancy centers to a nanobeam photonic crystal cavity

The negatively charged nitrogen vacancy center (NV) in diamond has generated significant interest as a platform for quantum information processing and sensing in the solid state. For most applications, high quality optical cavities are required to enhance the NV zero-phonon line (ZPL) emission. An outstanding challenge in maximizing the degree of NV-cavity coupling is the deterministic placement of NVs within the cavity. Here, we report photonic crystal nanobeam cavities coupled to NVs incorporated by a delta-doping technique that allows nanometer-scale vertical positioning of the emitters. We demonstrate cavities with Q up to ∼24 000 and mode volume V ∼ 0.47(λ/n){sup 3} as well as resonant enhancement of the ZPL of an NV ensemble with Purcell factor of ∼20. Our fabrication technique provides a first step towards deterministic NV-cavity coupling using spatial control of the emitters.
Authors:
; ; ; ; ;  [1] ;  [2] ; ; ; ;  [3] ; ;  [3] ;  [4] ;  [1] ;  [5]
  1. School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States)
  2. Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States)
  3. Department of Physics, University of California, Santa Barbara, Santa Barbara, California 93106 (United States)
  4. (United States)
  5. (Australia)
Publication Date:
OSTI Identifier:
22395596
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 26; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CONTROL; COUPLING; CRYSTALS; DATA PROCESSING; DIAMONDS; DOPED MATERIALS; EMISSION; FABRICATION; NITROGEN; PHONONS; POSITIONING; QUANTUM INFORMATION; SOLIDS; VACANCIES