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Displaying records 21 to 30 of 50 records.
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21. Implementation of generalized quantum measurements for unambiguous discrimination of multiple nonorthogonal coherent states
Topic: Quantum Information
Published: 6/18/2013
Authors: Francisco E. Becerra Chavez, Jingyun Fan, Alan L Migdall
Abstract: Generalized quantum measurements can perform perfect discrimination of nonorthogonal states by allowing for inconclusive results, task which is impossible performing only measurements with definite outcomes. We demonstrate the realization of genera ...

22. Improved multiplexed Infrared Single Photon Detectors
Topic: Quantum Information
Published: 8/11/2008
Authors: Sergey V Polyakov, Alan L Migdall, V Schettini, Ivo Pietro Degiovanni, Giorgio Brida, F Piacentini
Abstract: We discuss a scheme for a photon-counting detection system that overcomes the difficulties of photon-counting at high rates at telecom wavelengths. Our method uses an array of N detectors and a 1-by-N optical switch with a control circuit to direct i ...

23. Indistinguishability of single photons from dissimilar single-photon sources
Topic: Quantum Information
Published: 6/14/2011
Authors: Sergey V Polyakov, Glenn Scott Solomon, Edward B. (Edward) Flagg, Alan L Migdall, Andreas Muller
Abstract: In quantum mechanics, particles in identical states are indistinguishable, giving rise to effects with no classical analog. For instance, the bosonic nature of light insures that upon interference two indistinguishable photons will coalesce into a s ...

24. Innovations in Maximum Likelihood Quantum State Tomography
Topic: Quantum Information
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 ...

25. Introduction to Journal of Modern Optics Special Issue on Single Photon: Sources, Detectors, Applications and Measurement Methods
Topic: Quantum Information
Published: 1/20/2007
Authors: J Cheung, Alan L Migdall, Stefania Castelletto
Abstract: In October 2005, a 2-day follow up workshop, Single photon: sources, detectors, applications and measurement methods, was held at the NPL (National Physical Laboratory, UK). The focus for this workshop was to report on the key developments since the ...

26. Introduction to Journal of Modern Optics Special Issue on Single-Photon Devices and Applications
Topic: Quantum Information
Published: 11/15/2012
Authors: Stefan Kuck, Alan L Migdall, Ivo P Degiovanni, Jessica Cheung
Abstract: This special issue accompanies the 5th international conference on single-photon technologies held at the Physikalisch-Technische Bundesanstalt (PTB), Germany, in June 2011. This community has met every two years at national metrology institutes, sta ...

27. M-ary state phase-shift keying discrimination below the homodyne limit
Topic: Quantum Information
Published: 12/22/2011
Authors: Francisco E. Becerra Chavez, Jingyun Fan, Gerald Baumgartner, Sergey V Polyakov, Julius Goldhar, Jonathan Kosloski, Alan L Migdall
Abstract: We investigate a strategy for M-ary discrimination of nonorthogonal phase states with error rates below the homodyne limit. This strategy uses feed forward to update a reference field and Signal nulling for the state discriminati ...

28. Microstructure fiber-based source of photonic entanglement
Topic: Quantum Information
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

29. Migdall Responds II: More Correlated Photon Metrology History
Topic: Quantum Information
Published: 11/1/1999
Author: Alan L Migdall
Abstract: I appreciate the comments of Mike Gruntman (Sept., page 80) concerning the history of using correlated pairs of particles(photons) to determine absolute detector quantum efficiencies. Unfortunately there is an overall misunderstanding of the techniqu ...

30. Mode reconstruction of a light field by multi-photon statistics
Topic: Quantum Information
Published: 7/15/2013
Authors: Elizabeth A Goldschmidt, Fabrizio Piacentini, I. Ruo Berchera, Sergey V Polyakov, Silke Peters, Stefan Kuck, Giorgio Brida, Ivo Pietro Degiovanni, Alan L Migdall, Marco Genovese
Abstract: Knowing the underlying number and structure of occupied modes of a light field plays a crucial role in minimizing loss and decoherence of quantum information. Typically, full characterization of the mode structure involves a series of several separ ...

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