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Search Publications by: Alan Migdall (Fed)

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Displaying 151 - 175 of 217

High-Speed Quantum Communication Testbed

December 1, 2002
Author(s)
Carl J. Williams, Xiao Tang, M Hiekkero, J Rouzard, R Lu, A Goedecke, Alan L. Migdall, Alan Mink, Anastase Nakassis, Leticia S. Pibida
We describe the current status of the NIST Quantum Communication Testbed (QCT) facility. QCT is a facility for exploring quantum communication in an enviornment similar to that projected for early commercial implementations: quantum cryptographic key

Single Photon Source with Individualized Single Photon Certifications

December 1, 2002
Author(s)
Alan L. Migdall, D A. Branning, Stefania Castelletto, M J. Ware
As currently implemented, single photon sources cannot be made to produce single photons with high probability, while simultaneously suppressing the probability of yielding two or more photons.Because of this, single photon sources cannot really produce

Observation of Time-Dependent Inhibited Spontaneous Emission

July 1, 2002
Author(s)
D A. Branning, Alan L. Migdall
We present the results of an experiment to observe inhibited spontaneous emission of a parametric downconverter by an optical cavity whose switching time is short compared with the round trip time of the light.

A High Speed Quantum Communication Testbed

January 1, 2002
Author(s)
Carl J. Williams, X Tang, M Hiekkero, J Rouzaud, R Lu, A Goedecke, Alan L. Migdall, A Mink, A Nakassis, Leticia S. Pibida, J Wen, Edward W. Hagley, Charles W. Clark

Simultaneous Measurement of Group and Phase Delay Between Two Photons

December 1, 2000
Author(s)
D A. Branning, Alan L. Migdall, A V. Sergienko
We report on an experiment to determine both the group and phase delays experienced by orthogonally polarized photon pairs travelling through a birefringent medium. Both types of delay are determined from the same set of coincidence-counting data. The

Infrared Spectral Responsivity Scale of NIST

May 1, 2000
Author(s)
George P. Eppeldauer, Alan L. Migdall
An ambient temperature Infrared Spectral Responsivity Comparator Facility has been developed at NIST to calibrate infrared detectorsand radiometers for spectral and spatial responsivities. Test detectors are substituted for working- or transfer-standard

Calculating Characteristics of Non-collinear Phase-Matching in Uniaxial and Biaxial Crystals

April 1, 2000
Author(s)
N Boeuf, D A. Branning, I Chaperot, E Dauler, S Guerin, G Jaeger, Andreas Muller, Alan L. Migdall
A method of calculating the characteristics of phase-matching in both uniaxial and biaxial crystals is presented. Although significant work has been done to characterize the collinear case of phase-matching and to present many of its applications, the non

Observation of Photons From an Inhibited Spontaneous Emitter

February 1, 2000
Author(s)
D A. Branning, Alan L. Migdall
A fun and timely problem in cavity quantum electrodynamics is the question of whether atoms are actually radiating anything when their spontaneous emission is inhibited by a cavity. Recent theoretical papers have indicated that the answer to this question