Sub-to-super-Poissonian photon statistics in cathodoluminescence of color center ensembles in isolated diamond crystals
| Autor: | Saskia Fiedler, Sergii Morozov, Danylo Komisar, Evgeny A. Ekimov, Liudmila F. Kulikova, Valery A. Davydov, Viatcheslav N. Agafonov, Shailesh Kumar, Christian Wolff, Sergey I. Bozhevolnyi, N. Asger Mortensen |
|---|---|
| Rok vydání: | 2023 |
| Předmět: |
Quantum Physics
Condensed Matter - Mesoscale and Nanoscale Physics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) FOS: Physical sciences Electrical and Electronic Engineering Quantum Physics (quant-ph) Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Biotechnology |
| Zdroj: | Nanophotonics. |
| ISSN: | 2192-8614 2192-8606 |
| Popis: | Impurity-vacancy centers in diamond offer a new class of robust photon sources with versatile quantum properties. While individual color centers commonly act as single-photon sources, their ensembles have been theoretically predicted to have tunable photon-emission statistics. Importantly, the particular type of excitation affects the emission properties of a color center ensemble within a diamond crystal. While optical excitation favors non-synchronized excitation of color centers within an ensemble, electron-beam excitation can synchronize the emitters excitation and thereby provides a control of the second-order correlation function g 2(0). In this letter, we demonstrate experimentally that the photon stream from an ensemble of color centers can exhibit g 2(0) both above and below unity, thereby confirming long standing theoretical predictions by Meuret et al. [S. Meuret, L. H. G. Tizei, T. Cazimajou, et al., “Photon bunching in cathodoluminescence,” Phys. Rev. Lett., vol. 114, no. 19, p. 197401, 2015.]. Such a photon source based on an ensemble of few color centers in a diamond crystal provides a highly tunable platform for informational technologies operating at room temperature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|