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You searched on: Topic Area: Quantum Optics

Displaying records 41 to 50 of 70 records.
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41. Chip-scale waveguide source for photonic quantum information processing
Topic: Quantum Optics
Published: 6/10/2010
Authors: Jun Chen, Jingyun Fan, Alan L Migdall
Abstract: A bright, bandwidth-tunable waveguide photon-pair source can support two types of spontaneous parametric downconversion.

42. Enhanced telecom wavelength single-photon detection with NbTiN superconducting nanowires on oxidized silicon
Topic: Quantum Optics
Published: 6/3/2010
Authors: Michael G. Tanner, C. M. Natarajan, V. K. Pottapenjara, J. A. O?Connor, R. J. Warburton, Robert Hadfield, Burm Baek, Sae Woo Nam, S. Dorenbos, T. Zijlstra, Teun Klapwijk, Val Zwiller
Abstract: Superconducting nanowire single-photon detectors (SNSPDs) have emerged as a highly promising infrared single-photon detector technology. Next-generation devices are being developed with enhanced detection efficiency (DE) at key technological wavele ...

43. Heralded, pure-state single-photon source based on a Potassium Titanyl Phosphate waveguide
Topic: Quantum Optics
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 ...

44. Single-Photon Propagation Time through Dielectric Bandgaps: Large Variation Due to Small Structural Changes
Topic: Quantum Optics
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 ...

45. Quantum information processing and quantum control with trapped atomic ions
Topic: Quantum Optics
Published: 12/14/2009
Author: David J Wineland
Abstract: The role of trapped atomic ions in the field of quantum information processing is briefly reviewed. We discuss some of the historical developments that enabled ions to enter the field and then summarize the basic mechanisms required for logic gates a ...

46. Mode Expansion and Bragg Filtering Enable a High-Fidelity Fiber-Based Photon-Pair Source
Topic: Quantum Optics
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 ...

47. Microstructure fiber-based source of photonic entanglement
Topic: Quantum Optics
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

48. 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 ...

49. 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 ...

50. 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 ...

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