Culling a Self-Assembled Quantum Dot as a Single-Photon Source Using X-ray Microscopy.

ABSTRACT: Epitaxially grown self-assembled semiconductor quantum dots (QDs) with atom-like optical properties have emerged as the best choice for single-photon sources required for the development of quantum technology and quantum networks. Nondestructive selection of a single QD having desired structural, compositional, and optical characteristics is essential to obtain noise-free, fully indistinguishable single or entangled photons from single-photon emitters. Here, we show that the structural orientations and local compositional inhomogeneities within a single QD and the surrounding wet layer can be probed in a screening fashion by scanning X-ray diffraction microscopy and X-ray fluorescence with a few tens of nanometers-sized synchrotron radiation beam. The presented measurement protocol can be

SUBMITTER: Dey AB 

PROVIDER: S-EPMC10763734 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature