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Search Publications by: Alan Migdall (Fed)

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Displaying 101 - 125 of 217

Implementing a Multiplexed System of Detectors for Higher Photon Counting Rates

July 1, 2007
Author(s)
V Schettini, Sergey Polyakov, Ivo P. Degiovanni, Giorgio Brida, Stefania Castelletto, Alan L. Migdall
Photon counting applications are often limited by detector deadtime to operate at count rates of a few MHz, at best, and often at significantly lower levels. This limitation is becoming more critical as with the advance of photon counting applications such

Increased Cross-Correlation in Cascaded Four-Wave Mixing Processes

May 29, 2007
Author(s)
Jingyun Fan, Alan L. Migdall, L Wang
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 method

A Broadband High Spectral Brightness Fiber-Based Two-Photon Source

March 19, 2007
Author(s)
Jingyun Fan, Alan L. Migdall
After characterizing the Raman scattering in a fused silica polarization-maintaining microstructure optical fiber, we built a fiber-based two-photon light source of high spectral brightness, broad spectral range, and very low noise background at room

High Accuracy Calibration of Photon-Counting Detectors

October 25, 2006
Author(s)
Sergey V. Polyakov, Michael Ware, Alan L. Migdall
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 at

Achieving Higher Photon Counting Rates Using Multiplexed Detectors

August 13, 2006
Author(s)
Stefania Castelletto, Ivo P. Degiovanni, Alan L. Migdall, Sergey Polyakov, V Schettini
As the quantum information field advances, the need for improved single-photon devices is becoming more critical. Quantum information systems are often limited by detector deadtime to count rates of a few MHz, at best. We present a multiplexed detection

Raman Suppression in a Microstructure Fiber With Dual Laser Pumps

May 21, 2006
Author(s)
Jingyun Fan, Alan L. Migdall
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.

Efficient generation of correlated photon pairs in a microstructure fiber

December 15, 2005
Author(s)
Jingyun Fan, Alan L. Migdall, L Wang
We report efficient generation of correlated photon pairs through degenerate four-wave mixing in a microstructure fiber. With 735.7 nm pump pulses producing correlated signal (688.5 nm) and idler (789.8 nm) photons in a 1.8 m microstructure fiber, we

Efficient Generation of Correlated Photon Pairs in a Microstructure Fiber

December 15, 2005
Author(s)
Jingyun Fan, Alan L. Migdall, L Wang
We report efficient generation of correlated photon pairs through degenerate four-wave mixing in microstructure fibers. With 735.7 nm pump pulses producing conjugate signal (688.5 nm) and idler (789.8 nm) photons in an 1.8 m microstructure fiber, we detect

A Microstructure Fiber Two Photon Source With Conjugate Laser Pumps

August 25, 2005
Author(s)
Jingyun Fan, Alan L. Migdall, L Wang
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 microstructure