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Proceedings Paper

An all-spheric unobstructed optical terminal for free-space quantum communication
Author(s): C. Pernechele; F. Tamburini; T. Jennewein; A. Zeilinger
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Paper Abstract

We design and built a novel optical terminal specifically designed for free-space communication operating at light levels at the quantum limit, such as in quantum communication. Our system is particularly well suited for this task, as it is based on an all-spheric catadioptric design, which allows for large and un-obstructed apertures. This design offers an easier and cheaper approach to building high-quality optical terminals with large apertures than schemes based on offaxis parabolic mirrors. We utilized an off-axis version of the original Schwarzschild concentric design, and correct the spherical aberration by substituting the original on-axis secondary spherical mirror with an off-axis catadioptric secondary mirror. A prototype of the optical terminal was realized and tested and it meet the expected performance.

Paper Details

Date Published: 22 September 2011
PDF: 6 pages
Proc. SPIE 8167, Optical Design and Engineering IV, 81671E (22 September 2011); doi: 10.1117/12.894991
Show Author Affiliations
C. Pernechele, Istituto Nazionale di Astrofisica (Italy)
F. Tamburini, Univ. degli Studi di Padova (Italy)
T. Jennewein, Univ. of Waterloo (Canada)
Institute for Quantum Optics and Quantum Information (Austria)
A. Zeilinger, Institute for Quantum Optics and Quantum Information (Austria)
Univ. Wien (Austria)


Published in SPIE Proceedings Vol. 8167:
Optical Design and Engineering IV
Jean-Luc M. Tissot; Laurent Mazuray; Rolf Wartmann; Jeffrey M. Raynor; Andrew Wood, Editor(s)

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