1. Brightness and purity of a room-temperature single-photon source in the blue-green range
- Author
-
Granger, Francis, Gosain, Saransh Raj, Nogues, Gilles, Bellet-Amalric, Edith, Cibert, Joel, Ferrand, David, and Kheng, Kuntheak
- Subjects
Physics - Optics - Abstract
Single-photon sources are crucial for developing secure telecommunications. However, most systems operate at cryogenic temperatures. Here, we discuss a promising solid-state system emitting single photons at room temperature in the blue-green range, allowing for quantum communications in free space and underwater. The active element is a core-shell ZnSe tapered nanowire embedding a single CdSe quantum dot grown by molecular beam epitaxy. A patterned substrate enables a thorough study of the one and same nanowire by different methods. Our source exhibits anti-bunching with g(2)(0) < 0.3 near the centre of the photoluminescence line and shows high brightness. This work paves the way for developing single-photon sources operating at non-cryogenic temperatures.
- Published
- 2023
- Full Text
- View/download PDF