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Topic Area: Quantum Optics

Displaying records 31 to 40 of 64 records.
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31. 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 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904007

32. 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

33. 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

34. High-brightness, low-noise, all-fiber photon pair source
Topic: Quantum Optics
Published: 6/4/2009
Authors: Shellee Dawn Dyer, Burm Baek, Sae Woo Nam
Abstract: We demonstrate an all-fiber photon pair source for the critical telecom C-band. We achieve high pair generation rates in excess of 10 MHz while maintaining coincidence-to-accidental ratios (CARs) greater than 100. This is one of the brightest and low ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902279

35. 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

36. Entangling Light in its Spatial Degrees of Freedom with 4-Wave Mixing in an Atomic Vapor
Topic: Quantum Optics
Published: 2/18/2009
Authors: Vincent Boyer, Alberto Manuel Marino, Raphael C. Pooser, Paul D Lett
Abstract: The entanglement properties of two beams of light can reside in subtle correlations that exist in the unavoidable quantum fluctuations of the amplitudes and the phases of the electric fields. Recent advances in the generation of nonclassical light w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900951

37. Tunable Delay of Einstein-Podolsky-Rosen Entanglement
Topic: Quantum Optics
Published: 2/18/2009
Authors: Alberto Manuel Marino, Raphael C. Pooser, Vincent Boyer, Paul D Lett
Abstract: Entanglement is an important quantum resource which displays correlations between two subsystems that are stronger than the ones that can be obtained classically. This makes it the basis for a number of applications, such as quantum information pro ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900164

38. Measuring intensity correlations with a two-element superconducting nanowire single-photon detector
Topic: Quantum Optics
Published: 11/24/2008
Authors: Eric Dauler, Martin J Stevens, Burm Baek, Richard J. Molnar, Scott A. Hamilton, Richard P Mirin, Sae Woo Nam, Karl Berggren
Abstract: Second-order intensity correlation measurements were made using a two-element superconducting nanowire single photon detector (SNSPD) without the need for an optical beam splitter. This approach can be used to obtain a 50-ps full width at half maximu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=33002

39. 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 Anne Goldschmidt, Jingyun Fan, Alan L Migdall
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842440

40. Hanbury Brown-Twiss interferometry without a beamsplitter
Topic: Quantum Optics
Published: 8/19/2008
Authors: Martin J Stevens, Eric Dauler, Burm Baek, Richard J. Molnar, Scott A. Hamilton, Karl Berggren, Richard P Mirin, Sae Woo Nam
Abstract: We demonstrate Hanbury-Brown Twiss interferometry without a beamsplitter, by employing a single-mode optical fiber coupled to a multi-element superconducting nanowire single-photon detector.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=33023



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