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arXiv · 2302.03386

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

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
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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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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. 2023-02-07. Sub-to-super-Poissonian photon statistics in cathodoluminescence of color center ensembles in isolated diamond crystals. https://doi.org/10.1515/nanoph-2023-0204

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