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Topic Area: Quantum Information

Displaying records 31 to 40 of 46 records.
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31. Experimental Implementation of Quantum Entanglement and Hyper-Entanglement With a Fiber-Based Two-Photon Source
Topic: Quantum Information
Published: 9/5/2008
Authors: Jun Chen, M D. Eisaman, Elizabeth A Goldschmidt, Jingyun Fan, Alan L Migdall
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842440

32. Diagnosis of Pulsed Squeezing in Multiple Temporal Modes
Topic: Quantum Information
Published: 8/26/2008
Authors: Scott C Glancy, Emanuel H Knill, Thomas Gerrits, Tracy S. Clement, Martin J Stevens, Sae Woo Nam, Richard P Mirin
Abstract: When one makes squeezed light by downconversion of a pulsed pump laser, many temporal / spectral modes are simultaneously squeezed by different amounts. There is no guarantee that any of these modes matches the pump or the local oscillator used to me ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=890084

33. Improved multiplexed Infrared Single Photon Detectors
Topic: Quantum Information
Published: 8/11/2008
Authors: Sergey V Polyakov, Alan L Migdall, V Schettini, Ivo Pietro Degiovanni, Giorgio Brida, F Piacentini
Abstract: We discuss a scheme for a photon-counting detection system that overcomes the difficulties of photon-counting at high rates at telecom wavelengths. Our method uses an array of N detectors and a 1-by-N optical switch with a control circuit to direct i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842544

34. Spectrally Bright and Broad Fiber-Based Heralded Single-Photon Source
Topic: Quantum Information
Published: 7/29/2008
Authors: Elizabeth A Goldschmidt, M D. Eisaman, Jingyun Fan, Sergey V Polyakov, Alan L Migdall
Abstract: We present the first experimental characterization of a heralded single-photon source based on spontaneous four-wave-mixing in a single-mode microstructure fiber. We measure the second-order correlation function, g(2)(0), to be far below the classi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842447

35. Experimental Test of Non-Local Realism Using a Fiber-Based Source of Polarization-Entangled Photon Pairs
Topic: Quantum Information
Published: 3/25/2008
Authors: Jingyun Fan, M D. Eisaman, Elizabeth A Goldschmidt, J Chen, Alan L Migdall
Abstract: We describe an experimental test of local realistic and non-local realistic theories using polarization-entangled two-photon singlet states created using a fiber-based polarization Sagnac interferometer. We show a violation of Bell s inequality in th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841112

36. Quantum state tomography of a fiber-based source of polarization-entangled photon pairs
Topic: Quantum Information
Published: 12/20/2007
Authors: Jingyun Fan, M D. Eisaman, Alan L Migdall
Abstract: We report an experimental demonstration of a bright highfidelity single-mode-optical-fiber source of polarization-entangled photon pairs. The source takes advantage of single-mode fiber optics, highly nonlinear microstructure fiber, judicious phas ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841096

37. Introduction to Journal of Modern Optics Special Issue on Single Photon: Sources, Detectors, Applications and Measurement Methods
Topic: Quantum Information
Published: 1/20/2007
Authors: J Cheung, Alan L Migdall, Stefania Castelletto
Abstract: In October 2005, a 2-day follow up workshop, Single photon: sources, detectors, applications and measurement methods, was held at the NPL (National Physical Laboratory, UK). The focus for this workshop was to report on the key developments since the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841035

38. Reduced Deadtime and Higher Rate Photon-Counting Detection Using a Multiplexed Detector Array
Topic: Quantum Information
Published: 1/20/2007
Authors: Stefania Castelletto, Ivo Pietro Degiovanni, V Schettini, Alan L Migdall
Abstract: We present a scheme for a photon-counting detection system that can be operated at incident photon rates higher than otherwise possible by suppressing the effects of detector deadtime. The method uses an array of N detectors and a 1-by-N optical swit ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840994

39. Achieving Higher Photon Counting Rates Using Multiplexed Detectors
Topic: Quantum Information
Published: 8/13/2006
Authors: Stefania Castelletto, Ivo Pietro Degiovanni, Alan L Migdall, Sergey V Polyakov, V Schettini
Abstract: 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 detect ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841037

40. Efficient Generation of Correlated Photon Pairs in a Microstructure Fiber
Topic: Quantum Information
Published: 12/15/2005
Authors: Jingyun Fan, Alan L Migdall, L Wang
Abstract: 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840962



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