Nanoscale Imaging and Control of hexagonal Boron-Nitride Single Photon Emitters by a Resonant Nano-antenna.

07:00 EST 13th February 2020 | BioPortfolio

Summary of "Nanoscale Imaging and Control of hexagonal Boron-Nitride Single Photon Emitters by a Resonant Nano-antenna."

Defect centers in two-dimensional hexagonal boron nitride (hBN) are drawing attention as single photon emitters with high photo-stability at room temperature. With their ultra-high photon-stability, hBN single photon emitters are promising for new applications in quantum technologies and for two-dimensional material based optoelectronics. Here, we control the emission rate of hBN-defects by coupling these to resonant plasmonic nanocavities. By deterministic control of the antenna we acquire high-resolution emission maps of the single hBN-defects. Using time-gating, we can discriminate the hBN defect emission from the antenna luminescence. We observe sharp dips (40 nm FWHM) in emission, together with a reduction with the luminescence lifetime. Comparing with FDTD simulations we conclude that both radiative and non-radiative rates are enhanced, which effectively reduce the quantum efficiency. Also, the large refractive index of the hBN largely screens off the local antenna field enhancement. Finally, based on the insight gained, we propose a close-contact design for an order of magnitude brighter hBN single photon emission.


Journal Details

This article was published in the following journal.

Name: Nano letters
ISSN: 1530-6992


DeepDyve research library

PubMed Articles [21251 Associated PubMed Articles listed on BioPortfolio]

Macroscale and Nanoscale Photoelectrochemical Behavior of p-Type Si(111) Covered by a Single Layer of Graphene or Hexagonal Boron Nitride.

Two-dimensional (2D) materials may enable a general approach to introduction of a dipole at a semiconductor surface as well as control over other properties of the double layer at a semiconductor/liqu...

Single-photon emitters in hexagonal Boron Nitride: A review of progress.

This report summarizes progress made in understanding properties such as zero-phonon-line energies, emission and absorption polarizations, electron-phonon couplings, strain tuning and hyperfine coupli...

Optical absorption of single-layer hexagonal boron nitride in the ultraviolet.

In this paper we theoretically describe the absorption of hexagonal boron nitride (hBN) single layer. We develop the necessary formalism and present an efficient method for solving the Wannier equatio...

Second harmonic generation in defective hexagonal boron nitride.

Determining the role of defects in materials can be an important task both for the fundamental understanding of their influence on material properties and for future applications. In this work, we stu...

Single photon emission from top-down etched III-nitride quantum dots.

We report the single photon emission properties of III-nitride quantum dots (QDs) fabricated by electrochemical etching method from an epitaxial wafer. Through such top-down fabrication, QDs with diam...

Clinical Trials [10916 Associated Clinical Trials listed on BioPortfolio]

Boron Neutron Capture Therapy in Treating Patients With Melanoma

RATIONALE: Boron neutron capture therapy may selectively kill tumor cells without harming normal tissue. PURPOSE: Phase II trial to study the effectiveness of boron neutron capture therap...

Single Photon Emission Computed Tomography (SPECT) Imaging Study to Develop a Biomarker for Alzheimer's Disease

The main objectives of this proposal are as follows: - To assess the dynamic uptake and washout of 123-I MNI-388 and MNI 390, a potential imaging biomarker for β-amyloid burden i...

Boron Neutron Capture Therapy (BNCT) as Treatment of Glioblastoma

Boron Neutron Capture Therapy (BNCT) is an experimental radiation therapy technique that is based on the principle of irradiating boron atoms with neutrons. When neutrons have relatively l...

Boron Neutron Capture Therapy (BNCT) Combined With Cetuximab in the Treatment of Locally Recurred Head and Neck Cancer

The purpose of the study is to investigate efficacy and safety boron neutron capture therapy (BNCT) administered in combination with cetuximab in the treatment of head and neck cancer that...

BNCT to Treat Glioma That Has Progressed Following Radiotherapy

Boron Neutron Capture Therapy (BNCT) is an experimental radiation therapy technique which is based on the principle of irradiating boron atoms with neutrons. When neutrons have relatively ...

Medical and Biotech [MESH] Definitions

An imaging technique using a device which combines TOMOGRAPHY, EMISSION-COMPUTED, SINGLE-PHOTON and TOMOGRAPHY, X-RAY COMPUTED in the same session.

Tomography using single-photon emitting RADIONUCLIDES to create images that are captured in times corresponding to various points in the cardiac cycle.

Nanometer-sized tubes composed of various substances including carbon (CARBON NANOTUBES), boron nitride, or nickel vanadate.

A trace element with the atomic symbol B, atomic number 5, and atomic weight 10.81. Boron-10, an isotope of boron, is used as a neutron absorber in BORON NEUTRON CAPTURE THERAPY.

Inorganic or organic compounds that contain boron as an integral part of the molecule.

Quick Search

DeepDyve research library

Searches Linking to this Article