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Proceedings Paper

Cross-absorption as a limit to heralded silicon photon pair sources
Author(s): Chad A. Husko; Alex S. Clark; Matthew J. Collins; Alfredo De Rossi; Sylvain Combrié; Gaëlle Lehoucq; Isabella Rey; Thomas F. Krauss; Chunle Xiong; Benjamin J. Eggleton
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Paper Abstract

In recent years integrated waveguide devices have emerged as an attractive platform for scalable quantum tech- nologies. In contrast to earlier free-space investigations, one must consider additional effects induced by the media. In amorphous materials, spontaneous Raman scattered photons act as a noise source. In crystalline materials two-photon absorption (TPA) and free carrier absorption (FCA) are present at large intensities. While initial observations noted TPA affected experiments in integrated semiconductor devices, at present the nuanced roles of these processes in the quantum regime is unclear. Here, using single photons generated via spontaneous four-wave mixing (SFWM) in silicon, we experimentally demonstrate that cross-TPA (XTPA) between a classical pump beam and generated single photons imposes an intrinsic limit on heralded single photon generation, even in the single pair regime. Our newly developed model is in excellent agreement with experimental results.

Paper Details

Date Published: 1 May 2014
PDF: 13 pages
Proc. SPIE 9136, Nonlinear Optics and Its Applications VIII; and Quantum Optics III, 91361O (1 May 2014); doi: 10.1117/12.2052211
Show Author Affiliations
Chad A. Husko, The Univ. of Sydney (Australia)
Alex S. Clark, The Univ. of Sydney (Australia)
Matthew J. Collins, The Univ. of Sydney (Australia)
Alfredo De Rossi, Thales Research and Technology (France)
Sylvain Combrié, Thales Research and Technology (France)
Gaëlle Lehoucq, Thales Research and Technology (France)
Isabella Rey, Univ. of St. Andrews (United Kingdom)
Thomas F. Krauss, Univ. of St. Andrews (United Kingdom)
The Univ. of York (United Kingdom)
Chunle Xiong, The Univ. of Sydney (Australia)
Benjamin J. Eggleton, The Univ. of Sydney (Australia)

Published in SPIE Proceedings Vol. 9136:
Nonlinear Optics and Its Applications VIII; and Quantum Optics III
Benjamin J. Eggleton; Alexander V. Sergienko; Arno Rauschenbeutel; Alexander L. Gaeta; Neil G. R. Broderick; Thomas Durt, Editor(s)

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