title: Electrically driven polarized single-photon emission from an InGaN quantum dot in a GaN nanowire.
abstract: In a classical light source, such as a laser, the photon number follows a Poissonian distribution. For quantum information processing and metrology applications, a non-classical emitter of single photons is required. A single quantum dot is an ideal source of single photons and such single-photon sources in the visible spectral range have been demonstrated with III-nitride and II-VI-based single quantum dots. It has been suggested that short-wavelength blue single-photon emitters would be useful for free-space quantum cryptography, with the availability of high-speed single-photon detectors in this spectral region. Here we demonstrate blue single-photon emission with electrical injection from an In0.25Ga0.75N quantum dot in a single nanowire. The emitted single photons are linearly polarized along the c axis of the nanowire with a degree of linear polarization of ~70%.
authors.affiliation: Department of Electrical Engineering and Computer Science, Center for Photonics and Multiscale Nanomaterials, University of Michigan, 1301, Beal Avenue, Ann Arbor, Michigan 48109-2122, USA.
authors.forename: Saniya
authors.initials: S
authors.lastname: Deshpande
authors.forename: Junseok
authors.initials: J
authors.lastname: Heo
authors.forename: Ayan
authors.initials: A
authors.lastname: Das
authors.forename: Pallab
authors.initials: P
authors.lastname: Bhattacharya