Issue |
EPL
Volume 111, Number 2, July 2015
|
|
---|---|---|
Article Number | 24001 | |
Number of page(s) | 6 | |
Section | Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics | |
DOI | https://doi.org/10.1209/0295-5075/111/24001 | |
Published online | 19 August 2015 |
Blue-to-green single photons from InGaN/GaN dot-in-a-nanowire ordered arrays
1 Instituto Nicolás Cabrera and Instituto de Física de Materia Condensada (IFIMAC), Universidad Autónoma de Madrid - Francisco Tomás y Valiente 7, 28049 Madrid, Spain
2 ISOM-DIE, Universidad Politécnica de Madrid - Avenida Complutense 30, 28040, Madrid, Spain
3 Institute of Experimental Physics, Otto-von-Guericke-University - Universitätsplatz 2, 39106 Magdeburg, Germany
4 Centro Nacional de Microscopía Electrónica, Universidad Complutense de Madrid - Avenida Complutense s/n, 28040, Madrid, Spain
Received: 15 July 2015
Accepted: 28 July 2015
Single-photon emitters (SPEs) are at the basis of many applications for quantum information management. Semiconductor-based SPEs are best suited for practical implementations because of high design flexibility, scalability and integration potential in practical devices. Single-photon emission from ordered arrays of InGaN nano-disks embedded in GaN nanowires is reported. Intense and narrow optical emission lines from quantum dot-like recombination centers are observed in the blue-green spectral range. Characterization by electron microscopy, cathodoluminescence and micro-photoluminescence indicate that single photons are emitted from regions of high In concentration in the nano-disks due to alloy composition fluctuations. Single-photon emission is determined by photon correlation measurements showing deep anti-bunching minima in the second-order correlation function. The present results are a promising step towards the realization of on-site/on-demand single-photon sources in the blue-green spectral range operating in the GHz frequency range at high temperatures.
PACS: 42.50.Ar – Photon statistics and coherence theory / 78.67.Uh – Nanowires / 78.55.Cr – III-V semiconductors
© EPLA, 2015
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.