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Author: alan migdall

Displaying records 21 to 30 of 155 records.
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21. Interferometry with a photon-number resolving detector
Published: 10/19/2009
Authors: Aaron Pearlman, Christoph Wildfeuer, Jun Chen, Jingyun Fan, Alan L Migdall, Jonathan Dowling
Abstract: With photon-number resolving detectors, we show compression of interference fringes with in- creasing photon numbers for a Fabry-P erot interferometer. This feature provides a higher precision in determining the position of the interference maxima ...

22. Innovations in Maximum Likelihood Quantum State Tomography
Published: 10/9/2009
Authors: Scott C Glancy, Emanuel H Knill, Thomas Gerrits, Tracy S. Clement, Brice Robert Calkins, Adriana Eleni Lita, Aaron J Miller, Alan L Migdall, Sae Woo Nam, Richard P Mirin
Abstract: At NIST we are engaged in an experiment whose goal is to create superpositions of optical coherent states (such superpositions are sometimes called "Schroedinger cat" states). We use homodyne detection to measure the light, and we apply ma ...

23. Waveguide source of correlated photon pairs for chip-scale quantum information processing
Published: 8/26/2009
Authors: Jun Chen, Aaron Pearlman, Alexander E. Ling, Jingyun Fan, Alan L Migdall
Abstract: We present a systematic study of a correlated photon-pair source based on a periodically-poled KTiOPO4 (PPKTP) waveguide. The waveguide was fabricated on a KTiOPO4 crystal supporting type-II parametric down-conversion. In addition, periodic poling ...

24. Generation of optical Schrödinger cat states by number-resolved squeezed photon subtraction
Published: 5/31/2009
Authors: Thomas Gerrits, Scott C Glancy, Tracy S. Clement, Brice Robert Calkins, Adriana Eleni Lita, Aaron J Miller, Alan L Migdall, Sae Woo Nam, Richard P Mirin, Emanuel H Knill
Abstract: We have generated and measured an approximation of an optical Schrödinger cat state by photon subtraction from a squeezed state. Using single-photon avalanche photodiode detectors and photon-number-resolving transition edge sensors, we were able to e ...

25. Quantum radiometry
Published: 5/2/2009
Authors: Sergey V Polyakov, Alan L Migdall
Abstract: We review radiometric techniques that take advantage of photon counting and stem from the quantum laws of nature. We present a brief history of metrological experiments and review the current state of experimental quantum radiometry.

26. Improved implementation of the Alicki Van Ryn nonclassicality test for a single particle using Si detectors
Published: 4/15/2009
Authors: Sergey V Polyakov, Alan L Migdall, Giorgio Brida, Ivo Pietro Degiovanni, Marco Genovese, Fabrizio Piacentini, V Schettini, Nicolas Gisin
Abstract: Recently a test of nonclassicality for a single qubit was proposed R. Alicki and N. Van Ryn, J. Phys, A: Math. Theor. 41, 062001 2008. We present an optimized experimental realization of this test leading to a 46standard deviation violation of cl ...

27. A Versatile Waveguide Source of Photon Pairs for Chip-Scale Quantum Information Processing
Published: 4/8/2009
Authors: Jun Chen, Aaron Pearlman, Alexander E. Ling, Jingyun Fan, Alan L Migdall
Abstract: We demonstrate a bright, bandwidth-tunable, quasi-phasematched single-waveguide source generating photon pairs near 900 nm and 1300 nm. Two-photon coincidence spectra are measured at different operating temperatures of a periodically-poled KTiOPO4 ...

28. Experimental Implementation of Quantum Entanglement and Hyper-Entanglement With a Fiber-Based Two-Photon Source
Published: 9/5/2008
Authors: Jun Chen, M D. Eisaman, Elizabeth Anne Goldschmidt, Jingyun Fan, Alan L Migdall

29. Improved multiplexed Infrared Single Photon Detectors
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 ...

30. Spectrally Bright and Broad Fiber-Based Heralded Single-Photon Source
Published: 7/29/2008
Authors: Elizabeth Anne 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 ...

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