Výsledky vyhledávání - "Josef Schriefl"

Decoherence in a superconducting quantum bit circuit

Autor: Eddy Collin, Yuriy Makhlin, Philippe Joyez, Josef Schriefl, Alexander Shnirman, Gerd Schön, P. J. Meeson, Fabio Chiarello, Daniel Esteve, G. Ithier, Denis Vion

Publikováno v: Physical Review B, 72 (13)
Physical review. B, Condensed matter and materials physics 72 (2005): 134519-1–134519-22. doi:10.1103/PhysRevB.72.134519
info:cnr-pdr/source/autori:G. Ithier 1; E. Collin 1; P. Joyez 1; P. J. Meeson 1,2; D. Vion 1; D. Esteve 1; F. Chiarello 3; A. Shnirman 4; Y. Makhlin 4,5; J. Schriefl 4,6; and G. Schön 4/titolo:Decoherence in a superconducting quantum bit circuit/doi:10.1103%2FPhysRevB.72.134519/rivista:Physical review. B, Condensed matter and materials physics/anno:2005/pagina_da:134519-1/pagina_a:134519-22/intervallo_pagine:134519-1–134519-22/volume:72

Decoherence in quantum bit circuits is presently a major limitation to their use for quantum computing purposes. We present experiments, inspired from NMR, that characterise decoherence in a particular superconducting quantum bit circuit, the quantro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6fc39e2aa4cbacb59e089c5ac3b3b5e
https://doi.org/10.1103/physrevb.72.134519

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Dephasing by a nonstationary classical intermittent noise

Autor: Pascal Degiovanni, Maxime Clusel, Josef Schriefl, David Carpentier

Publikováno v: Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2005, 72, pp.035328. ⟨10.1103/PhysRevB.72.035328⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2005, 72, pp.035328. ⟨10.1103/PhysRevB.72.035328⟩

We consider a new phenomenological model for a $1/f^{\mu}$ classical intermittent noise and study its effects on the dephasing of a two-level system. Within this model, the evolution of the relative phase between the $|\pm>$ states is described as a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c19ee6ff80d33e645d9abbbd7a7482cc
https://hal.science/hal-00641673

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Nonstationary dephasing of two-level systems

Autor: David Carpentier, Maxime Clusel, Josef Schriefl, Pascal Degiovanni

Publikováno v: EPL-Europhysics Letters
EPL-Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2004, 69, pp.156. ⟨10.1209/epl/i2004-10324-1⟩
EPL-Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2005, 69, pp.156
EPL-Europhysics Letters, 2005, 69, pp.156
Europhysics Letters, 69 (2), 156-162
EPL-Europhysics Letters, 2004, 69, pp.156. ⟨10.1209/epl/i2004-10324-1⟩

International audience; We investigate the influence of nonstationary 1/fμ noise, produced by interacting defects, on a quantum two-level system. Adopting a simple phenomenological model for this noise we describe exactly the corresponding dephasing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbfbef0f91d6606e4117233d0a157230
https://hal.archives-ouvertes.fr/hal-00641677

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Quantum impurity approach to a coupled qubit problem

Autor: Sebastien Camalet, Francois Delduc, Josef Schriefl, Pascal Degiovanni

Publikováno v: EPL-Europhysics Letters
EPL-Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2004, 68, pp.37. ⟨10.1209/epl/i2004-12019-1⟩
Europhysics Letters, 68 (1), 37-43
EPL-Europhysics Letters, 2004, 68, pp.37. ⟨10.1209/epl/i2004-12019-1⟩

We consider a system of two qubits at the ends of a finite length 1D cavity. This problem is mapped onto the double-Kondo model which is also shown to describe the low energy physics of a finite length quantum wire with resonant levels at its ends. A

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3e0485bebd9e991d6f96ae8fcd42d28
https://hal.archives-ouvertes.fr/hal-00001621

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Decoherence from ensembles of two-level fluctuators

Autor: Alexander Shnirman, Josef Schriefl, Gerd Schön, Yuriy Makhlin

Publikováno v: New Journal of Physics. 8:1-1

1/f noise, the major source of dephasing in Josephson qubits, may be produced by an ensemble of two-level systems. Depending on the statistical properties of their distribution, the noise distribution can be Gaussian or non-Gaussian. The latter situa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed31310e01b2780f9e99b4601a50a963
https://doi.org/10.1088/1367-2630/8/1/001

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Focus on Solid State Quantum Information

Autor: Rosario Fazio

Publikováno v: New Journal of Physics. 7

In the last few years quantum information has played an increasingly central role in the research activities of many scientists within wide ranging areas of physics, mathematics and computer science as it known to be more efficient than its classical

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::af4223d316587a8953441041a92643a2
https://doi.org/10.1088/1367-2630/7/1/e04

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