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Displaying records 21 to 30 of 48 records.
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21. 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 ...

22. 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 ...

23. 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 ...

24. 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

25. 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 ...

26. More on History of Applied Correlated-Photon Metrology-Migdall Replies
Topic: Quantum Information
Published: 5/1/1999
Author: Alan L Migdall

27. Multi-Spatial-Mode Single-Beam Quadrature Squeezed States of Light from Four-Wave Mixing in Hot Rubidium Vapor
Topic: Quantum Information
Published: 10/24/2011
Authors: Neil V. (Neil Vladimir) Corzo Trejo, Alberto Manuel Marino, Kevin M. Jones, Paul D Lett
Abstract: We present experimental results on the generation of multi-spatial-mode, single-beam, quadrature squeezed light using four-wave mixing in hot Rb vapor. Squeezing and phase-sensitive deamplification are observed over a range of powers and detunings ne ...

28. Photon Temporal Correlations Measured Using a Dual-Channel Upconversion Detector
Topic: Quantum Information
Published: 10/14/2012
Authors: Paulina S Kuo, Jason S. Pelc, Oliver T Slattery, Martin M. Fejer, Xiao Tang
Abstract: We demonstrate application of a dual-channel upconversion detector as a beamsplitter that preserves photon statistics. We use this beamsplitter to characterize temporal correlations of photons from coherent and pseudo-thermal sources.

29. Photonic Technologies for Quantum Information Processing
Topic: Quantum Information
Published: 10/2/2004
Authors: Prem Kumar, P G Kwiat, Alan L Migdall, Sae Woo Nam, Jelena Vuckovic, F Wong
Abstract: The last several years have seen tremendous research toward practical optical quantum information processing, including single- and entangled-photon sources and high-efficiency photon counting detectors, covering a range of wavelengths. We review som ...

30. Preparation of Dicke States in an Ion Chain
Topic: Quantum Information
Published: 11/2/2009
Authors: David Hume, Chin W. Chou, Till P Rosenband, David J Wineland
Abstract: We have investigated theoretically and experimentally a method for preparing Dicke states in trapped atomic ions. We consider a linear chain of N ion qubits that is prepared in a particular Fock state of motion, jmi. The m phonons are removed by ap ...

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