Scientific Results

Ultrabright single-photon source on diamond with electrical pumping at room and high temperatures

Year: 2016

Authors: Fedyanin Yu D., Agio M.

Autors Affiliation: Laboratory of Nanooptics and Plasmonics, Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russian Federation;
National Institute of Optics (CNR-INO), I-50125 Florence, Italy;
European Laboratory for Nonlinear Spectroscopy (LENS), I-50019 Sesto Fiorentino, Italy;
Center for Quantum Science and Technology in Arcetri (QSTAR), I-50125 Florence, Italy;
Laboratory of Nano-Optics, University of Siegen, D-57072 Siegen, Germany

Abstract: The recently demonstrated electroluminescence of color centers in diamond makes them one of the best candidates for room temperature single-photon sources. However, the reported emission rates are far off what can be achieved by state-of-the-art electrically driven epitaxial quantum dots. Since the electroluminescence mechanism has not yet been elucidated, it is not clear to what extent the emission rate can be increased. Here we develop a theoretical framework to study single-photon emission from color centers in diamond under electrical pumping. The proposed model comprises electron and hole trapping and releasing, transitions between the ground and excited states of the color center as well as structural transformations of the center due to carrier trapping. It provides the possibility to predict both the photon emission rate and the wavelength of emitted photons. Self-consistent numerical simulations of the single-photon emitting diode based on the proposed model show that the photon emission rate can be as high as 100 kcounts s(-1) at standard conditions. In contrast to most optoelectronic devices, the emission rate steadily increases with the device temperature achieving of more than 100 Mcount s(-1) at 500 K, which is highly advantageous for practical applications. These results demonstrate the potential of color centers in diamond as electrically driven non-classical light emitters and provide a foundation for the design and development of single-photon sources for optical quantum computation and quantum communication networks operating at room and higher temperatures.

Journal/Review: NEW JOURNAL OF PHYSICS

Volume: 18      Pages from: 073012-1  to: 073012-9

More Information: The work was supported by the Russian Science Foundation (14-19-01788) and the EC Seventh Framework Programme (248855).
KeyWords: Color; Color centers; Diamonds; Electroluminescence; Elementary particle sources; Light; Optical communication; Optoelectronic devices; Particulate emissions; Photons; Quantum communication; Quantum computers; Quantum theory; Semiconductor quantum dots; Electrical pumping; Electroluminescence mechanisms; Nitrogen vacancies; Optical quantum computation; Room and high temperatures; Silicon vacancies; Single-photon-emitting diode; Structural transformation; Particle beams
DOI: 10.1088/1367-2630/18/7/073012

Citations: 11
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