Sub-to-super-Poissonian photon statistics in cathodoluminescence of color center ensembles in isolated diamond crystals

• URL: http://arxiv.org/abs/2302.03386v1
• Date: Tue, 7 Feb 2023 10:47:03 GMT
• Title: Sub-to-super-Poissonian photon statistics in cathodoluminescence of color center ensembles in isolated diamond crystals
• Authors: 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
• Abstract summary: Impurity-vacancy centers in diamond offer a new class of robust photon sources with versatile quantum properties. The particular type of excitation affects the emission properties of a color center ensemble within a diamond crystal.
• Score: 1.431357479164058
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: 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 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. 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.

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