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Displaying records 31 to 40 of 48 records.
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31. Quantum Tomography via Compressed Sensing: Error Bounds, Sample Complexity, and Efficient Estimators
Topic: Quantum Information
Published: 9/27/2012
Authors: Yi-Kai Liu, Steven T. Flammia, David Gross, Jens Eisert
Abstract: Intuitively, if a density operator has small rank, then it should be easier to estimate from experimental data, since in this case only a few eigenvectors need to be learned. We prove two complementary results that confi rm this intuition. First, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911441

32. Quantum Transduction of Telecommunications-band Single Photons from a Quantum Dot by Frequency Upconversion
Topic: Quantum Information
Published: 10/3/2010
Authors: Matthew T. Rakher, Lijun Ma, Oliver T Slattery, Xiao Tang, Kartik A Srinivasan
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905469

33. Quantum information processing and metrology with trapped ions
Topic: Quantum Information
Published: 1/25/2011
Authors: David J Wineland, Dietrich G Leibfried
Abstract: The use of trapped atomic ions in the field of quantum information processing is briefly reviewed. We summarize the basic mechanisms required for logic gates and the use of the gates in demonstrating simple algorithms. We discuss the potential of tra ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906237

34. Quantum information processing and quantum control with trapped atomic ions
Topic: Quantum Information
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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903175

35. Quantum state tomography of a fiber-based source of polarization-entangled photon pairs
Topic: Quantum Information
Published: 12/20/2007
Authors: Jingyun Fan, M D. Eisaman, Alan L Migdall
Abstract: We report an experimental demonstration of a bright highfidelity single-mode-optical-fiber source of polarization-entangled photon pairs. The source takes advantage of single-mode fiber optics, highly nonlinear microstructure fiber, judicious phas ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841096

36. Randomized Benchmarking of Atomic Qubits in an Optical Lattice
Topic: Quantum Information
Published: 11/4/2010
Authors: Steven M Olmschenk, Radu S. Chicireanu, Karl D. Nelson, James V Porto
Abstract: We perform randomized benchmarking on neutral atomic quantum bits (qubits) confined in an optical lattice. Single qubit gates are implemented using microwaves, resulting in a measured error per randomized computational gate of 1.4(1) x 10−4 tha ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906248

37. Real Time Data Acquisition Platform for Pulsed Measurements
Topic: Quantum Information
Published: Date unknown
Authors: Sergey V Polyakov, Alan L Migdall, Sae Woo Nam
Abstract: We present an inexpensive and simple data acquisition platform based on Field Programmable Gate Arrays (FPGAs) designed to acquire and characterize fast digital or analog electrical signal real time for processing on a generic personal computer. Whil ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842471

38. Realization of a programmable two-qubit quantum processor
Topic: Quantum Information
Published: 11/15/2009
Authors: David Hanneke, Jonathan Home, John D. Jost, Jason Amini, Dietrich G Leibfried, David J Wineland
Abstract: The universal quantum computer is a device that could simulate any physical system and represents a major goal for the field of quantum information science. Algorithms performed on such a device are predicted to offer significant gains for some impor ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903420

39. Reduced Deadtime and Higher Rate Photon-Counting Detection Using a Multiplexed Detector Array
Topic: Quantum Information
Published: 1/20/2007
Authors: Stefania Castelletto, Ivo Pietro Degiovanni, V Schettini, Alan L Migdall
Abstract: We present a scheme for a photon-counting detection system that can be operated at incident photon rates higher than otherwise possible by suppressing the effects of detector deadtime. The method uses an array of N detectors and a 1-by-N optical swit ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840994

40. Relativity and Optical Clocks
Topic: Quantum Information
Published: 9/24/2010
Authors: Chin W. Chou, David Hume, Till P Rosenband, David J Wineland
Abstract: Albert Einstein's theory of relativity forced us to alter our concepts of reality. One of the more startling outcomes of the theory is that we have to give up our notions of simultaneity. This is manifest in the so-called twin paradox in which a twin ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905055



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