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Displaying records 41 to 50 of 63 records.
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41. Innovations in Maximum Likelihood Quantum State Tomography
Topic: Quantum Optics
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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904007

42. Waveguide source of correlated photon pairs for chip-scale quantum information processing
Topic: Quantum Optics
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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903158

43. Measuring high-order coherences of chaotic and coherent optical states
Topic: Quantum Optics
Published: 8/24/2009
Authors: Martin J Stevens, Burm Baek, Eric Dauler, Andrew J. Kerman, Richard J. Molnar, Scott A. Hamilton, Karl Berggren, Richard P Mirin, Sae Woo Nam
Abstract: We demonstrate a new approach to measuring high-order temporal coherences that uses a four-element superconducting nanowire single-photon detector (SNSPD) in which four independent, single-photon-sensitive elements are interleaved over a single spati ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903081

44. Improved implementation of the Alicki Van Ryn nonclassicality test for a single particle using Si detectors
Topic: Quantum Optics
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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900940

45. Experimental Implementation of Quantum Entanglement and Hyper-Entanglement With a Fiber-Based Two-Photon Source
Topic: Quantum Optics
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

46. Spectrally Bright and Broad Fiber-Based Heralded Single-Photon Source
Topic: Quantum Optics
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

47. Experimental Test of Non-Local Realism Using a Fiber-Based Source of Polarization-Entangled Photon Pairs
Topic: Quantum Optics
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

48. Quantum state tomography of a fiber-based source of polarization-entangled photon pairs
Topic: Quantum Optics
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

49. An Optical Fiber-Based Source of Polarization-Entangled Photon Pairs
Topic: Quantum Optics
Published: 9/10/2007
Authors: Jingyun Fan, M D. Eisaman, Alan L Migdall
Abstract: We describe an achromatic, phase-stable, broadband source of polarization-entangled photon pairs with high spectral brightness that uses four-wave mixing in a fiber Sagnac interferometer. We achieved a polarization-entangled two-photon coincidence r ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841095

50. A Broadband High Spectral Brightness Fiber-Based Two-Photon Source
Topic: Quantum Optics
Published: 3/19/2007
Authors: Jingyun Fan, Alan L Migdall
Abstract: 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841058



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