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Author: alan migdall

Displaying records 151 to 160.
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151. 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 ...

152. 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 ...

153. 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 ...

154. 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 ...

155. 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.

156. Optimizing the Storage and Retrieval Efficiency of a Solid-State Quantum Memory Through Tailored State Preparation
Published: Date unknown
Authors: M D. Eisaman, Sergey V Polyakov, M Hohensee, Jingyun Fan, P Hemmer, Alan L Migdall
Abstract: We theoretically investigate the feasibility of using spectral hole burning in Pr3+: Y2SiO5 to prepare an ensemble of Pr3+ ions with a spectral distribution optimized for use as a quantum memory for single-photon states. We introduce figures of meri ...

157. Quantum Tomography of a Bright, Polarization-Entangled Photon Pair Source Based on a Fiber Sagnac Interferometer
Published: Date unknown
Authors: Jingyun Fan, M D. Eisaman, Alan L Migdall
Abstract: The success of many quantum-information applications demands entangled photon pairs emitted at a high rate, and in a single spatial mode with narrow spectral bandwidth to allow high two-photon interference visibility in creation and propagation. Here ...

158. Raman Suppression in a Microstructure Fiber With Dual Laser Pumps
Published: Date unknown
Authors: Jingyun Fan, Alan L Migdall
Abstract: Coupling two frequency-conjugate laser pulses into an optical fiber, we observe at the middle frequency either enhanced photon generation via four-wave mixing or suppressed Raman emission depending on the phase difference between the two pumps.

159. Real Time Data Acquisition Platform for Pulsed Measurements
Published: Date unknown
Authors: Sergey V Polyakov, Alan L Migdall, Sae Woo Nam
Abstract: We present an inexpensive and simple data acquisition platform based on Field Programmable Gate Arrays (FPGAs) designed to acquire and characterize fast digital or analog electrical signal real time for processing on a generic personal computer. Whil ...

160. Using Correlated Photons to Measure Polarization Mode Dispersion with Attosecond Resolution
Published: Date unknown
Authors: Alan L Migdall, G Jaeger, A V Sergienko
Abstract: We describe the status of a highly stable dual scale technique for measuring polarization mode dispersion (PMD) using two-photons produced via parametric down conversion. The method uses a two-photon interference to observe relative propagation time ...

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