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Topic Area: Quantum Optics
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Displaying records 41 to 50 of 72 records.
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41. 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 ...

42. 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 ...

43. 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 ...

44. 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 ...

45. 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 ...

46. 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 ...

47. 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

48. 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.

49. 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 ...

50. Photon pair generation in dispersion-shifted fiber with nearly complete suppression of raman photons
Topic: Quantum Optics
Published: 7/6/2008
Authors: Shellee Dawn Dyer, Lenson Pellouchoud, Martin J Stevens, Burm Baek, Sae Woo Nam, Robert Hadfield
Abstract: We show photon pair generation from spontaneous four-wave mixing in dispersion-shifted fiber. By cooling the fiber to 4 K, we achieve almost complete suppression of the Raman photons, yielding a coincidence-to-accidental ratio of approximately 360, e ...

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