Fluorescence enhancement of a single germanium vacancy center in a nanodiamond by a plasmonic Bragg cavity

Shailesh Kumar*, Cuo Wu, Danylo Komisar, Yinhui Kan, Liudmila F. Kulikova, Valery A. Davydov, Viatcheslav N. Agafonov, Sergey I. Bozhevolnyi

*Kontaktforfatter for dette arbejde

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

7 Downloads (Pure)

Abstrakt

Germanium vacancy (GeV) centers in diamonds constitute a promising platform for single-photon sources to be used in quantum information technologies. Emission from these color centers can be enhanced by utilizing a cavity that is resonant at the peak emission wavelength. We investigate circular plasmonic Bragg cavities for enhancing the emission from single GeV centers in nanodiamonds (NDs) at the zero phonon line. Following simulations of the enhancement for different configuration parameters, the appropriately designed Bragg cavities together with out-coupling gratings composed of hydrogen silsesquioxane ridges are fabricated around the NDs containing nitrogen vacancy centers deposited on a silica-coated silver surface. We characterize the fabricated configurations and finely tune the cavity parameters to match the GeV emission. Finally, we fabricate the cavity containing a single GeV-ND and compare the total decay-rate before and after cavity fabrication, finding a decay-rate enhancement of ∼5.5 and thereby experimentally confirming the feasibility of emission enhancement with circular plasmonic cavities.
OriginalsprogEngelsk
Artikelnummer044303
TidsskriftThe Journal of Chemical Physics
Vol/bind154
Udgave nummer4
Antal sider8
ISSN0021-9606
DOI
StatusUdgivet - 28. jan. 2021

Fingeraftryk

Dyk ned i forskningsemnerne om 'Fluorescence enhancement of a single germanium vacancy center in a nanodiamond by a plasmonic Bragg cavity'. Sammen danner de et unikt fingeraftryk.

Citationsformater