Siampour, H., Wang, O., Zenin, V.A. et al. (10 more authors) (2020) Ultrabright single-photon emission from germanium-vacancy zero-phonon lines: deterministic emitter-waveguide interfacing at plasmonic hot spots. Nanophotonics, 9 (4). 36. pp. 953-962.
Abstract
Striving for nanometer-sized solid-state single-photon sources, we investigate atom-like quantum emitters based on single germanium-vacancy (GeV) centers isolated in crystalline nanodiamonds (NDs). Cryogenic characterization indicated symmetry-protected and bright (>106 counts/s with off-resonance excitation) zero-phonon optical transitions with up to 6-fold enhancement in energy splitting of their ground states as compared to that found for GeV centers in bulk diamonds (i.e. up to 870 GHz in highly strained NDs vs. 150 GHz in bulk). Utilizing lithographic alignment techniques, we demonstrate an integrated nanophotonic platform for deterministic interfacing plasmonic waveguides with isolated GeV centers in NDs, which enables 10-fold enhancement of single-photon decay rates along with the emission direction control by judiciously designing and positioning a Bragg reflector. This approach allows one to realize the unidirectional emission from single-photon dipolar sources, thereby opening new perspectives for the realization of quantum optical integrated circuits.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2020 The Authors. This work is licensed under the Creative Commons Attribution 4.0 Public License CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). |
Keywords: | unidirectional surface plasmon polariton (SPP) coupler; nanodiamonds; germanium-vacancy (GeV) centers; near-field microscopy; integrated quantum photonics |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 29 Apr 2020 11:59 |
Last Modified: | 29 Apr 2020 11:59 |
Status: | Published |
Publisher: | Walter de Gruyter GmbH |
Refereed: | Yes |
Identification Number: | 10.1515/nanoph-2020-0036 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:160064 |