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Author: alan migdall

Displaying records 141 to 150 of 155 records.
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141. A Dual Scale Two-Photon Technique for Measuring Polarization Mode Dispersion With Attosecond Resolution
Published: Date unknown
Authors: Alan L Migdall, A Muller, G Jaeger, A V Sergienko
Abstract: We describe a highly stable dual scale technique for measuring polarization mode dispersion (PMD) using entangled two-photon states produced via Type-II spontaneous parametric down conversion. The method relies on locating the center of a two-photon ...

142. A Microstructure Fiber Two Photon Source With Conjugate Laser Pumps
Published: Date unknown
Authors: Jingyun Fan, Alan L Migdall, L Wang
Abstract: We present a systematic experimental study of generating correlated photon pairs using a reversed degenerate four-wave mixing process. By overlapping a pair of parallel- (or cross-) polarized laser pump pulses at conjugate frequencies in a microstruc ...

143. A Program for Non-Collinear Phase-Matching Applications
Published: Date unknown
Authors: N Boeuf, I Chaperot, E Dauler, G Jaeger, Andreas Muller, Alan L Migdall
Abstract: This is a program for calculating characteristics of collinear and non-collinear phase matching in both uniaxial and biaxial crystals. In particular, this program calculates the difference of the fast end slow indices of refraction as a function of ...

144. Characterization of High-OD Ultrathin Infrared Neutral Density Filters
Published: Date unknown
Authors: Simon Grant Kaplan, Leonard M Hanssen, Alan L Migdall, G Lefever-Button
Abstract: We have performed transmittance measurements of metal-film neutral density filters on ultrathin polymer substrates using both Fourier-transform infrared spectrometer and laser-based (3.39 mm and 10.6 mm) systems. The use of ultrathin substrates, fre ...

145. Efficiently Generation of Correlated Photon Pairs in Microstructure Fibers
Published: Date unknown
Authors: Jingyun Fan, Alan L Migdall, L Wang
Abstract: We report the efficient generation of correlated photon pairs by four-wave mixing in a 1.8 meter long microstructure fiber. The detected coincidence rate is 10,000/s with 0.8 nm collection bandwidth, the highest to date in a fiber-based photon source ...

146. Generation of Correlated Photons via Degenerate Four-Wave Mixing in Microstructure Fibers
Published: Date unknown
Authors: Jingyun Fan, Alan L Migdall
Abstract: The gain of four-wave mixing and the gain of Raman scattering in an optical fiber are not uniform with wavelength. Through systematic experimental study, we show that in its gain spectral region, the contrast of four-wave mixing can be optimized with ...

147. High Accuracy Calibration of Photon-Counting Detectors
Published: Date unknown
Authors: Sergey V Polyakov, Michael Ware, Alan L Migdall
Abstract: We discuss a practical implementation of a photon-counting detector calibration using correlated photon pairs produced by parametric down-conversion. In this calibration scheme, the detection of a first photon triggers the measurement sequence aimed ...

148. High-Flux Hyperentangled Photon-Pairs From a Microstructure-Fiber Sagnac Interferometer
Published: Date unknown
Authors: Jun Chen, Jingyun Fan, M D. Eisaman, Alan L Migdall
Abstract: We generate hyperentangled (time-bin and polarization) photon-pairs using a microstructure-fiber Sagnac interferometer. Two-photon interference visibilities in both degrees of freedom are >83%, and the Bell s inequality is violated by 25 ? at 1-kHz c ...

149. Increased Cross-Correlation in Cascaded Four-Wave Mixing Processes
Published: Date unknown
Authors: Jingyun Fan, Alan L Migdall, L Wang
Abstract: We report the measurement of increased noise cross-correlation between stokes and anti-stokes beams created in cascaded four-wave mixing processes with dual pump wavelengths, when two-photon light is efficiently created at the middle frequency. This ...

150. Movies of Optical Parametric Downconversion
Published: Date unknown
Authors: A Rostapshov, D Martin, D A Branning, E Dauler, S Thomas, Alan L Migdall, N Boeuf, Andreas Muller
Abstract: A series of photos of parametric downconversion are presented in movie format to help illustrate and understand the mechanics of parametric downconversion and phase matching.

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