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Real-World Two-Photon Interference and Proof-of-Principle Quantum Key Distribution Immune to Detector Attacks (2013)

A. Rubenok, J. A. Slater, P. Chan, I. Lucio-Martinez, and W. Tittel

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2013-09-24

Beschreibung: Author(s): A. Rubenok, J. A. Slater, P. Chan, I. Lucio-Martinez, and W. Tittel Several vulnerabilities of single-photon detectors have recently been exploited to compromise the security of quantum-key-distribution (QKD) systems. In this Letter, we report the first proof-of-principle implementation of a new quantum-key-distribution protocol that is immune to any such attack. Mo... [Phys. Rev. Lett. 111, 130501] Published Mon Sep 23, 2013

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

Print ISSN: 0031-9007

Digitale ISSN: 1079-7114

Thema: Physik

Publiziert von American Physical Society (APS)

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Extended Coherence Time on the Clock Transition of Optically Trapped Rubidium (2011)

G. Kleine Büning, J. Will, W. Ertmer, E. Rasel, J. Arlt, C. Klempt, F. Ramirez-Martinez, F. Piéchon, and P. Rosenbusch

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-17

Beschreibung: Author(s): G. Kleine Büning, J. Will, W. Ertmer, E. Rasel, J. Arlt, C. Klempt, F. Ramirez-Martinez, F. Piéchon, and P. Rosenbusch Optically trapped ensembles are of crucial importance for frequency measurements and quantum memories but generally suffer from strong dephasing due to inhomogeneous density and light shifts. We demonstrate a drastic increase of the coherence time to 21 s on the magnetic field insensitive clock tran... [Phys. Rev. Lett. 106, 240801] Published Thu Jun 16, 2011

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

Print ISSN: 0031-9007

Digitale ISSN: 1079-7114

Thema: Physik

Publiziert von American Physical Society (APS)

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Extended x-ray absorption fine structure in Ga_{1-x}Mn_{x}N/SiC films with high Mn content (2011)

O. Sancho-Juan, O. Martínez-Criado, A. Cantarero, N. Garro, M. Salomé, J. Susini, D. Olguín, S. Dhar, and K. Ploog

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2011-05-27

Beschreibung: Author(s): O. Sancho-Juan, O. Martínez-Criado, A. Cantarero, N. Garro, M. Salomé, J. Susini, D. Olguín, S. Dhar, and K. Ploog In this study, the local atomic structure of highly homogeneous Ga 1- x Mn x N alloy films ( 0.03〈 x 〈0.09 ) is analyzed by means of Mn and Ga K -edge extended x-ray absorption fine structure measurements. From the curve fitting, the structural parameters corresponding to the first two atomic shells sur... [Phys. Rev. B 83, 172103] Published Thu May 26, 2011

Schlagwort(e): Structure, structural phase transitions, mechanical properties, defects

Print ISSN: 1098-0121

Digitale ISSN: 1095-3795

Thema: Physik

Publiziert von American Physical Society (APS)

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High-pressure study of the behavior of mineral barite by x-ray diffraction (2011)

D. Santamaría-Pérez, L. Gracia, G. Garbarino, A. Beltrán, R. Chuliá-Jordán, O. Gomis, D. Errandonea, Ch. Ferrer-Roca, D. Martínez-García, and A. Segura

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2011-08-03

Beschreibung: Author(s): D. Santamaría-Pérez, L. Gracia, G. Garbarino, A. Beltrán, R. Chuliá-Jordán, O. Gomis, D. Errandonea, Ch. Ferrer-Roca, D. Martínez-García, and A. Segura In this paper, we report the angle-dispersive x-ray diffraction data of barite, BaSO 4 , measured in a diamond-anvil cell up to a pressure of 48 GPa, using three different fluid pressure-transmitting media (methanol-ethanol mixture, silicone oil, and He). Our results show that BaSO 4 exhibits a phase t... [Phys. Rev. B 84, 054102] Published Tue Aug 02, 2011

Schlagwort(e): Structure, structural phase transitions, mechanical properties, defects

Print ISSN: 1098-0121

Digitale ISSN: 1095-3795

Thema: Physik

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Procedure to count atoms with trustworthy single-atom sensitivity (2013)

S. Van Aert, A. De Backer, G. T. Martinez, B. Goris, S. Bals, G. Van Tendeloo, and A. Rosenauer

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-02-20

Beschreibung: Author(s): S. Van Aert, A. De Backer, G. T. Martinez, B. Goris, S. Bals, G. Van Tendeloo, and A. Rosenauer We report a method to reliably count the number of atoms from high-angle annular dark field scanning transmission electron microscopy images. A model-based analysis of the experimental images is used to measure scattering cross sections at the atomic level. The high sensitivity of these measurements... [Phys. Rev. B 87, 064107] Published Tue Feb 19, 2013

Schlagwort(e): Structure, structural phase transitions, mechanical properties, defects

Print ISSN: 1098-0121

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Thema: Physik

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Nodal effects in α-iron dislocation mobility in the presence of helium bubbles (2013)

N. Naveen Kumar, E. Martinez, B. K. Dutta, G. K. Dey, and A. Caro

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-02-14

Beschreibung: Author(s): N. Naveen Kumar, E. Martinez, B. K. Dutta, G. K. Dey, and A. Caro Dislocations and dislocation networks act as sinks for irradiation-induced point defects such as vacancies and interstitials, or impurities such as helium. Recently, it has been found that the intersection points of the screw dislocation network formed at twist grain boundaries in Au (experimental) ... [Phys. Rev. B 87, 054106] Published Wed Feb 13, 2013

Schlagwort(e): Structure, structural phase transitions, mechanical properties, defects

Print ISSN: 1098-0121

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Thema: Physik

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7

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Undoing a Quantum Measurement (2013)

Philipp Schindler, Thomas Monz, Daniel Nigg, Julio T. Barreiro, Esteban A. Martinez, Matthias F. Brandl, Michael Chwalla, Markus Hennrich, and Rainer Blatt

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2013-02-15

Beschreibung: Author(s): Philipp Schindler, Thomas Monz, Daniel Nigg, Julio T. Barreiro, Esteban A. Martinez, Matthias F. Brandl, Michael Chwalla, Markus Hennrich, and Rainer Blatt In general, a quantum measurement yields an undetermined answer and alters the system to be consistent with the measurement result. This process maps multiple initial states into a single state and thus cannot be reversed. This has important implications in quantum information processing, where erro... [Phys. Rev. Lett. 110, 070403] Published Thu Feb 14, 2013

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

Print ISSN: 0031-9007

Digitale ISSN: 1079-7114

Thema: Physik

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8

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Density functional theory study of phase IV of solid hydrogen (2012)

Chris J. Pickard, Miguel Martinez-Canales, and Richard J. Needs

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2012-06-16

Beschreibung: Author(s): Chris J. Pickard, Miguel Martinez-Canales, and Richard J. Needs We have studied solid hydrogen up to pressures of 300 GPa and temperatures of 350 K using density functional theory methods and have found “mixed structures” that are more stable than those predicted earlier. Mixed structures consist of alternate layers of strongly bonded molecules and weakly bonded... [Phys. Rev. B 85, 214114] Published Fri Jun 15, 2012

Schlagwort(e): Structure, structural phase transitions, mechanical properties, defects

Print ISSN: 1098-0121

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Thema: Physik

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Behavior of hydrogen ions, atoms, and molecules in α-boron studied using density functional calculations (2011)

Philipp Wagner, Christopher P. Ewels, Irene Suarez-Martinez, Vincent Guiot, Stephen F. J. Cox, James S. Lord, and Patrick R. Briddon

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2011-01-22

Beschreibung: Author(s): Philipp Wagner, Christopher P. Ewels, Irene Suarez-Martinez, Vincent Guiot, Stephen F. J. Cox, James S. Lord, and Patrick R. Briddon We examine the behavior of hydrogen ions, atoms, and molecules in α-boron using density functional calculations. Hydrogen behaves as a negative-U center, with positive H ions preferring to sit off-center on interlayer bonds and negative H ions sitting preferably at in-plane sites between three B_{1... [Phys. Rev. B 83, 024101] Published Fri Jan 21, 2011

Schlagwort(e): Structure, structural phase transitions, mechanical properties, defects

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Thema: Physik

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Molecular oxygen tetramer (O_{2})_{4}: Intermolecular interactions and implications for the ε solid phase (2011)

Massimiliano Bartolomei, Estela Carmona-Novillo, Marta I. Hernández, Jesús Pérez-Ríos, José Campos-Martínez, and Ramón Hernández-Lamoneda

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2011-09-23

Beschreibung: Author(s): Massimiliano Bartolomei, Estela Carmona-Novillo, Marta I. Hernández, Jesús Pérez-Ríos, José Campos-Martínez, and Ramón Hernández-Lamoneda Recent data have determined that the structure of the high-pressure ε phase of solid oxygen consists of clusters composed of four O 2 molecules. This finding has opened the question about the nature of the intermolecular interactions within the molecular oxygen tetramer. We use multiconfigurational a... [Phys. Rev. B 84, 092105] Published Thu Sep 22, 2011

Schlagwort(e): Structure, structural phase transitions, mechanical properties, defects

Print ISSN: 1098-0121

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Thema: Physik

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