The Correlated Photon Research at NIST in the USA is a project in the Optical Technology division, currently investigating the application of correlated photon techniques for noncontact temperature measurements at high temperatures and specifically aimed at the following problems:

• Determining the absolute responsivity of photon counting detectors
• Making absolute radiance measurements of high temperature IR sources
• Producing a reliable single-photon on-demand source

Many of their published paper on these research topics have been published and are available for download in PDF Format from the NIST website. Here’s the list, with download links as of September 9, 2007.

Efficient generation of correlated photon pairs in a microstructure fiber, (2268 kB) , J. Fan, A. Migdall, and L.J. Wang Opt. Lett. 30(24), 3368 (2005).

Generation of cross-polarized photon pairs in a microstructure fiber with frequency-conjugate laser pump pulses,(1798 kB) , J. Fan and A. Migdall, Opt. Exp. 13, 5777(2005).

Spatial and spectral mode selection of heralded single photons from pulsed parametric down-conversion, (891 kB) , S. Castelletto, I.P. Degiovanni, V. Schettin, and A. Migdall, Opts. Exp. 13, 6709 (2005).

Two-Photon Mode Preparation and Matching Efficiency: Definition, Measurement, and Optimization, (296 kB) , S. Castelletto, I.P. Degiovanni, G. Furno, V. Schettini, A. Migdall, and M. Ware, IEEE Transactions on Instrumentation and Measurement, 54, 890-893 (2005).

Photonic Technologies for Quantum Information Processing,(354 kB) , P. Kumar, P. Kwiat, A. Migdall, S. Nam, J. Vuckovic, and F.N.C. Wong, Quantum Inf. Processing. 3, 215(2004).

On the measurement of two-photon single-mode coupling efficiency in parametric down-conversion photon sources,( 643 kB) , S. Castelletto, I.P. Degiovanni, A. Migdall and M. Ware, New J. Phys. 6, 87 (2004).

Introduction to Journal of Modern Optics Special Issue on Single-photon: detectors, applications, and measurement methods,” (66 kB) , A. Migdall and J. Dowling, J. Mod. Opt. 51, 1265-1266 (2004).

Single-photon detector characterization using correlated photons: the march from feasibility to metrology, (140 kB) ,M. Ware and A. Migdall, J. Mod. Opt. 51, 1549-1557 (2004).

For entire issue on photon counting see:
Special Issue: Single-photon: detectors, applications, and measurement methods,

Proc. NIST-ARDA Workshop on Single-photon: detectors, applications and measurement methods NIST, Gaithersburg, MD, 31 March-1 April 2003 ed. by A. Migdall and J. Dowling 51, No. 9-10/15 June-10 (July 2004).

Single Photon Source with Individualized Single Photon Certifications,(308 KB) , A.L. Migdall, D. Branning, S. Castelletto, and M. Ware, Proc. of SPIE, 4821, 455-465 (2002).

Tailoring single-photon and multiphoton probabilities of a single-photon on-demand source,” (140 KB) , A.L. Migdall, D. Branning, and S. Castelletto, Phys. Rev. A 66, 053805 (2002).

Simultaneous measurement of group and phase delay between two photons (532 KB) , D. Branning A.L. Migdall, and A.V. Sergienko, Phys. Rev. A, 62, 063808 (2000).

Correlated-Photon Metrology without Absolute Standards,” (7.69 MB) ,A. Migdall, Phys. Today, January (1999).

NOTE: About the Techniques…

(Per the statements on the NIST Webpages)

“Each of these techniques uses the process of optical parametric down-conversion (PDC) to produce correlated pairs of photons.

This process employs a nonlinear medium which allows photons from a pump beam to, in effect, decay into pairs of photons under the restrictions of energy and momentum conservation.

Since the two “decay” photons are born at the same time, the detection of one photon indicates with high certainty the existence of the other photon of the pair. In addition, the conservation of energy and momentum allow the wavelength and direction of one photon to be determined from the other.

Longer range plans include arrangements to make the absolute response/radiance methods continuously tunable, and to extend their spectral range as far into the infrared as possible.”

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