EPJ Web Conf.
Volume 255, 2021EOS Annual Meeting (EOSAM 2021)
|Number of page(s)||3|
|Section||Topical Meeting (TOM) 8- Nonlinear and Quantum Optics|
|Published online||18 November 2021|
Indistinguishable Photons from a Single Molecule under Pulsed Excitation
1 National Institute of Optics (CNR-INO), Largo Enrico Fermi 6, Firenze, 50125, Italy
2 European Laboratory for Non-Linear Spectroscopy (LENS), Via Nello Carrara 1, Sesto, F.no 50019, Italy
3 Dipartimento di Fisica e Astronomia, Universita degli Studi di Firenze, Via G. Sansone 1, Sesto, F.no 50019, Italy
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Published online: 18 November 2021
Quantum light sources are crucial for the future of quantum photonic technologies and, among them, single photons on-demand are key resources in quantum communications and information processing. Ideal quantum emitters providing indistinguishable photons in a clocked manner, negligible decoherence and spectral diffusion, and with potential for scalability are today still a major challenge. We report on photostable and indistinguishable single photon emission from dibenzoterrylene molecules isolated in anthracene nanocrystals (DBT:Ac NCs) at 3K. The visibility of two-photon interference is preserved even when they are separated more than thirty times the excited-state lifetime, or ten fluorescence cycles. One of the advantages of organic molecules is the low-cost mass production of nominally identical emitters, that also allow for on-chip integration. These aspects combined with high spectral stability and coherence make them promising for applications and future quantum technologies.
© The Authors, published by EDP Sciences, 2021
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