Quantum emitters coupled to circular nanoantennas for high brightness quantum light sources
arXiv:1703.00163 · doi:10.1088/2058-9565/aa73e4
Abstract
Engineering the directionality and emission rate of quantum light sources is essential in the development of modern quantum applications.In this work we use numerical calculations to optimize the brightness of a broadband quantum emitter positioned in a hybrid metal-dielectric circular periodic nanoantenna. The optimized structure features a photon collection efficiency of 74% (82%) and a photon flux enhancement of over 10 (6) into a numerical aperature of 0.22 (0.50) respectively, corresponding to a direct coupling into two types of multimode fibers. In order to enhance the emission rate, we present a new circular nanoantenna design where a quantum emitter is attached to a silver nanocone at the center of the antenna. After optimization, we find a collection efficiency of 61% (78%) into a numerical aperature of 0.22 (0.50), giving a brightness enhancement of 1000 (600) for an unpolarized emitter. The enhancements in both structures are broadband due to the low quality factor of the device and are therefore ideal for room-temperature sources. This type of a scalable design can be utilized towards on-chip, high brightness quantum light sources operating at room temperature.
References in corpus (16)
- Photonic quantum technologies
- On-Demand Single Photons with High Extraction Efficiency and Near-Unity Indistinguishability from a Resonantly Driven Quantum Dot in a Micropillar
- Indistinguishable photons from separated silicon-vacancy centers in diamond
- Controlling spontaneous emission with plasmonic optical patch antennas
- Indistinguishable photons from the resonance fluorescence of a single quantum dot in a microcavity
- Three megahertz photon collection rate from an NV center with millisecond spin coherence
- Enhanced Single Photon Emission from a Diamond-Silver Aperture
- Photophysics of single silicon vacancy centers in diamond: implications for single photon emission
- A circular dielectric grating for vertical extraction of single quantum dot emission
- A scanning probe-based pick-and-place procedure for assembly of integrated quantum optical hybrid devices
- Demonstration of the enhanced Purcell factor in all-dielectric structures
- Fluorescence enhancement with the optical (bi-) conical antenna
- Highly directional emission and photon beaming from nanocrystal quantum dots embedded in metallic nanoslit arrays
- Bottom-up Engineering of Diamond Nanostructures
- Purcell-enhanced optical spin readout of Nitrogen-Vacancy centers in diamond
- Broadband Purcell enhanced emission dynamics of quantum dots in linear photonic crystal waveguides
Cited by in corpus (7)
- Towards optimal single-photon sources from polarized microcavities
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- Single Photon Sources with Near Unity Collection Efficiencies by Deterministic Placement of Quantum Dots in Nanoantennas
- Optimized diamond inverted nanocones for enhanced color center to fiber coupling
- Overcoming the rate-directionality tradeoff: a room-temperature ultrabright quantum light source
- Purification of single photons by temporal heralding of quantum dot sources
- Fast and accurate functionalization of opaque conductive samples with single nano particles