Purcell-Enhanced Single-Photon Generation from CsPbBr₃ Quantum Dots in In Situ Selected Laguerre-Gaussian Modes.

ABSTRACT: Single photons in Laguerre-Gaussian (LG) beams, which carry orbital angular momentum (OAM), could enable more robust and efficient photonic quantum communication and information processing, as well as enhanced sensitivity in quantum metrology and imaging. However, as most implementations are indirect or require additional mode-shaping elements, the direct generation of single photons with OAM has received growing interest. Colloidal lead halide perovskite quantum dots (QDs) have recently emerged as a versatile material that can produce indistinguishable single photons quasi-deterministically at a high rate. Here, we integrate single CsPbBr₃ QDs into an open Fabry-Perot microcavity with a nanofabricated Gaussian-shaped deformation, demonstrating Purcell-enhanced single-photon gen

SUBMITTER: Oddi V 

PROVIDER: S-EPMC12947728 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature