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Proceedings Paper

Infrared spectroscopy assisted by entangled photons
Author(s): Anna V. Paterova; Shaun Lung; Dmitry A. Kalashnikov; Sergei P. Kulik; Leonid A. Krivitsky
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Paper Abstract

We describe a proof-of-concept of a method for measurement of both real (refraction) and imaginary (absorption) part of the refractive index in the infrared (IR) range by measuring an interference pattern in the visible range without the need for any spectral and spatial selection. The concept is based on nonlinear interference of entangled photons, generated via Spontaneous Parametric Down Conversion (SPDC). In our interferometer, the phase of the signal photon in the visible range depends on the phase of an entangled IR photon. When the IR photon is traveling through the media of interest, its properties can be found from the observations of the visible photon.

Paper Details

Date Published: 8 December 2016
PDF: 7 pages
Proc. SPIE 10030, Infrared, Millimeter-Wave, and Terahertz Technologies IV, 100300X (8 December 2016); doi: 10.1117/12.2248771
Show Author Affiliations
Anna V. Paterova, A*STAR - Data Storage Institute (Singapore)
Shaun Lung, A*STAR - Data Storage Institute (Singapore)
National Univ. of Singapore (Singapore)
Dmitry A. Kalashnikov, A*STAR - Data Storage Institute (Singapore)
Sergei P. Kulik, M.V. Lomonosov Moscow State Univ. (Russian Federation)
Leonid A. Krivitsky, A*STAR - Data Storage Institute (Singapore)

Published in SPIE Proceedings Vol. 10030:
Infrared, Millimeter-Wave, and Terahertz Technologies IV
Cunlin Zhang; Xi-Cheng Zhang; Masahiko Tani, Editor(s)

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