9 research outputs found
Deterministic coupling of a single silicon-vacancy color center to a photonic crystal cavity in diamond
Deterministic coupling of single solid-state emitters to nanocavities is the
key for integrated quantum information devices. We here fabricate a photonic
crystal cavity around a preselected single silicon-vacancy color center in
diamond and demonstrate modification of the emitters internal population
dynamics and radiative quantum efficiency. The controlled, room-temperature
cavity coupling gives rise to a resonant Purcell enhancement of the zero-phonon
transition by a factor of 19, coming along with a 2.5-fold reduction of the
emitter's lifetime
Nanoimplantation and Purcell enhancement of single nitrogen-vacancy centers in photonic crystal cavities in diamond
We present the controlled creation of single nitrogen-vacancy (NV) centers via ion implantation at
the center of a photonic crystal cavity which is fabricated in an ultrapure, single crystal diamond
membrane. High-resolution placement of NV centers is achieved using collimation of a
5 keV-nitrogen ion beam through a pierced tip of an atomic force microscope. We demonstrate
coupling of the implanted NV centers’ broad band fluorescence to a cavity mode and observe
Purcell enhancement of the spontaneous emission. The results are in good agreement with a master
equation model for the cavity coupling
Single photon emission from silicon-vacancy centres in CVD-nano-diamonds on iridium
We introduce a process for the fabrication of high quality, spatially
isolated nano-diamonds on iridium via microwave plasma assisted CVD-growth. We
perform spectroscopy of single silicon-vacancy (SiV)-centres produced during
the growth of the nano-diamonds. The colour centres exhibit extraordinary
narrow zero-phonon-lines down to 0.7 nm at room temperature. Single photon
count rates up to 4.8 Mcps at saturation make these SiV-centres the brightest
diamond based single photon sources to date. We measure for the first time the
fine structure of a single SiV-centre thus confirming the atomic composition of
the investigated colour centres.Comment: 20 pages, 13 figures, accepted by New Journal of Physic
Nanoimplantation and Purcell enhancement of single nitrogen-vacancy centers in photonic crystal cavities in diamond
We present the controlled creation of single nitrogen-vacancy (NV) centers via ion implantation at
the center of a photonic crystal cavity which is fabricated in an ultrapure, single crystal diamond
membrane. High-resolution placement of NV centers is achieved using collimation of a
5 keV-nitrogen ion beam through a pierced tip of an atomic force microscope. We demonstrate
coupling of the implanted NV centers’ broad band fluorescence to a cavity mode and observe
Purcell enhancement of the spontaneous emission. The results are in good agreement with a master
equation model for the cavity coupling