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

Journal Article · Mon Jun 01 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4922041· OSTI ID:22412531

Bentham, C.; Coles, R. J.; Royall, B.; O'Hara, J.; Prtljaga, N.; Fox, A. M.; Skolnick, M. S.; Wilson, L. R. ^[1]; Clarke, E. ^[2]

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1. Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH (United Kingdom)
2. Department of Electronic and Electrical Engineering, University of Sheffield, Sheffield S1 3JD (United Kingdom)

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.

• OSTI ID: 22412531
• Journal Information: Applied Physics Letters, Vol. 106, Issue 22; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CRYSTALS
GALLIUM ARSENIDES
INDIUM ARSENIDES
PHOTONS
QUANTUM DOTS
RESONANCE
STARK EFFECT
WAVEGUIDES