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Title: On-chip electrically controlled routing of photons from a single quantum dot

Electrical control of on-chip routing of photons emitted by a single InAs/GaAs self-assembled quantum dot (SAQD) is demonstrated in a photonic crystal cavity-waveguide system. The SAQD is located inside an H1 cavity, which is coupled to two photonic crystal waveguides. The SAQD emission wavelength is electrically tunable by the quantum-confined Stark effect. When the SAQD emission is brought into resonance with one of two H1 cavity modes, it is preferentially routed to the waveguide to which that mode is selectively coupled. This proof of concept provides the basis for scalable, low-power, high-speed operation of single-photon routers for use in integrated quantum photonic circuits.
Authors:
; ; ; ; ; ; ;  [1] ;  [2] ;  [3]
  1. Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH (United Kingdom)
  2. School of Engineering, University of Hull, Hull HU6 7RX (United Kingdom)
  3. Department of Electronic and Electrical Engineering, University of Sheffield, Sheffield S1 3JD (United Kingdom)
Publication Date:
OSTI Identifier:
22412531
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 22; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CRYSTALS; GALLIUM ARSENIDES; INDIUM ARSENIDES; PHOTONS; QUANTUM DOTS; RESONANCE; STARK EFFECT; WAVEGUIDES