Elliptical quantum dots as on-demand single photons sources with deterministic polarization states

Journal Article · Mon Nov 09 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4935463· OSTI ID:22486030

Teng, Chu-Hsiang; Demory, Brandon; Ku, Pei-Cheng ^[1]; Zhang, Lei; Hill, Tyler A.; Deng, Hui ^[2]

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1. Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Ave., Ann Arbor, Michigan 48105 (United States)
2. Department of Mechanical Engineering, University of Michigan, 2350 Hayward St., Ann Arbor, Michigan 48105 (United States)

In quantum information, control of the single photon's polarization is essential. Here, we demonstrate single photon generation in a pre-programmed and deterministic polarization state, on a chip-scale platform, utilizing site-controlled elliptical quantum dots (QDs) synthesized by a top-down approach. The polarization from the QD emission is found to be linear with a high degree of linear polarization and parallel to the long axis of the ellipse. Single photon emission with orthogonal polarizations is achieved, and the dependence of the degree of linear polarization on the QD geometry is analyzed.

• OSTI ID: 22486030
• Journal Information: Applied Physics Letters, Vol. 107, Issue 19; Other Information: (c) 2015 AIP Publishing LLC; 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
CONTROL
PHOTON EMISSION
PHOTONS
POLARIZATION
QUANTUM DOTS
QUANTUM INFORMATION