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Author: alan migdall

Displaying records 21 to 30 of 161 records.
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21. Heralded, pure-state single-photon source based on a Potassium Titanyl Phosphate waveguide
Published: 2/15/2010
Authors: Zachary H Levine, Jingyun Fan, Jun Chen, Alexander E. Ling, Alan L Migdall
Abstract: WWe analyze the generation of single spatial mode, spectrally uncorrelated photon pairs via type II spontaneous parametric downconversion in a Potassium Titanyl Phosphate (KTP) waveguide using real experimental parameters. We show that this source ...

22. Single-Photon Propagation Time through Dielectric Bandgaps: Large Variation Due to Small Structural Changes
Published: 2/1/2010
Authors: Natalia Borjemscaia Rutter, Sergey V Polyakov, Paul D Lett, Alan L Migdall
Abstract: The transit times of photons traveling through opaque barriers such as dielectric stacks exhibit the Hartman saturation effect. This saturation of the transit time is quite sensitive to the addition of a single dielectric layers, even onto an alread ...

23. Scalable multiplexed detector system for high-rate telecom-bandsingle-photon detection
Published: 11/25/2009
Authors: Sergey V Polyakov, Alan L Migdall, Giorgio Brida, Ivo P Degiovanni, Fabrizio Piacentini, V Schettini
Abstract: We present a photon-counting detection system at telecom wavelengths that overcomes the difficulties of photon-counting at high rates. Our detection system uses active multiplexing, an array of N detectors, and a 1-by-N optical switch with a control ...

24. Mode Expansion and Bragg Filtering Enable a High-Fidelity Fiber-Based Photon-Pair Source
Published: 11/9/2009
Authors: Alexander E. Ling, Jun Chen, Jingyun Fan, Alan L Migdall
Abstract: We report the development of a fiber-based single spatial mode source of photon-pairs where the efficiency of extracting photon-pairs is 15x better than a previous implementation [16]. This critical improvement in efficiency enabled a spectrally bri ...

25. Microstructure fiber-based source of photonic entanglement
Published: 11/1/2009
Authors: Jingyun Fan, Alan L Migdall, Jun Chen, Elizabeth A Goldschmidt, Alexander E. Ling
Abstract: We review the development of photonic entanglement via four-wave mixing in microstructure fiber

26. Effect of Surface Modes on Photon Propagation through Dielectric Bandgaps
Published: 10/28/2009
Authors: Natalia Malkova, Sergey V Polyakov, Alan L Migdall, Garnett W Bryant
Abstract: We investigate the Hartman saturation effect of photons traveling through barriers created by bandgaps of multilayer stacks. In particular, we investigate theoretically the recently observed jumps in photon transversal times due to adding a single l ...

27. 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 ...

28. Innovations in Maximum Likelihood Quantum State Tomography
Published: 10/9/2009
Authors: Scott C Glancy, Emanuel H Knill, Thomas Gerrits, Tracy S. Clement, Brice R. 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 ...

29. 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 ...

30. 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 R. 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 ...

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