Sub-to-super-Poissonian photon statistics in cathodoluminescence of color centers in diamonds

Sergii Morozov*, Saskia Fiedler, Danylo Komisar, Evgeny A. Ekimov, Liudmila F. Kulikova, Valery A. Davydov, Viatcheslav N. Agafonov, Shailesh Kumar, Christian Wolff, Sergey I. Bozhevolnyi, N. Asger Mortensen

*Corresponding author for this work

Research output: Contribution to conference without publisher/journalPosterResearch


Impurity-vacancy centers in diamond are emerging as robust, versatile photon sources with unique quantum properties. Typically, individual color centers serve as single-photon emitters; however, their collective behavior has been predicted to feature tunable emission statistics. This work explores how different excitation modes—optical and electron-beam—impact the emission characteristics of color center ensembles [1]. Optical excitation leads to non-synchronized photon emission, whereas electron-beam excitation can synchronize the excitation of emitters, enabling precise control over the second-order correlation function, g2(0). Our experimental results reveal that photon streams from small ensembles can achieve g2(0) values both above and below unity, confirming theoretical predictions by Meuret et al. [2]. This demonstrates the potential of using an ensemble of color centers in diamond as a tunable photon source for quantum information technologies at room temperature.
Original languageEnglish
Publication date7. Jun 2024
Publication statusPublished - 7. Jun 2024
EventPolariton Science Conference 2024 - DIAS, Odense, Denmark
Duration: 4. Jun 20247. Jun 2024


ConferencePolariton Science Conference 2024
Internet address


  • color center
  • impurity-vacancy centers in diamond
  • single-photon emitter
  • photon antibunching
  • photon bunching
  • cathodoluminescence


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