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Prochains séminaires

lun, 05/27/2013 - 12:30

Susanne Butz, Physikalisches Institut, Karlsruhe Institute of Technology, Karlsruhe, Germany.
- 12:30
- D3-2040
- Title: A Tunable Josephson Metamaterial
  
  Abstract: We present experimental data on a tunable magnetic metamaterial consisting of rf-SQUIDs. A metamaterial is a medium constructed of artifical elements, so- called meta-atoms, that interact in a specific way with an incoming electromagnetic wave. The size of and the distance between the individual meta-atoms is much smaller than the wavelength. Our metamaterial consists of one-dimensional arrays of 27 rf-SQUIDs, one chain placed inside each of the gaps of a coplanar waveguide. Due to the nonlinear inductance of the rf-SQUID, its resonance frequency is tunable in situ by applying a dc magnetic field. We demonstrate that this results in tunable effective parameters of our metamaterial. In order to obtain the effective magnetic permeability from the measured data, we employ a technique that uses only the complex transmission coefficient S21.
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lun, 06/03/2013 - 12:30

Bhaskar Roy Bardhan, Department of Physics and Astronomy, Louisiana State University
- 12:30
- D3-2040
- To be annonced
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mer, 06/05/2013 - 10:45

INTRIQ : Lilian Childress, McGill
- 10:45
- D1-2165
- Title: Spins and photons: toward quantum networks in diamond
  
  Abstract: Long-lived electronic and nuclear spin states have made nitrogen-vacancy (NV) defects in diamond a leading candidate for solid-state quantum information processing. Moreover, their coherent optical transitions open opportunities for quantum communication. This talk will consider the motivation and requirements for optically-networked quantum devices, and explore challenges and opportunities for realizing them in diamond. In particular, the resonant excitation and emission in these defect centers enables single shot spin detection as well as observation of two-photon quantum interference; these two capabilities have enabled measurement-based entanglement between remote NV centers.
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lun, 06/10/2013 - 12:30

Frank Verstraete , Université de Vienne
- 12:30
- D3-2040
- To be announced
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mar, 06/11/2013 - 00:00

Wolfgang Belzig, l'Université de Constance, Allemagne
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Publications

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Conference Proceedings

Gagné-Lebrun A, Tremblay A-MS. 2003. What is the Hamiltonian for parent high-temperature superconductors? 17th annual international symposium on High Performance Computing Systems and Applications and the OSCAR Symposium. Proceedings of the 17th annual international symposium on High Performance Computing Systems and Applications and the OSCAR Symp:71-77.

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What is the Hamiltonian of parent high Tc, Gagne-Lebrun, Tremblay.pdf

Journal Article

Fournier P, M.Aubin. 1993. The Wall Thickness Dependence of the Full Penetration Field of YBCO Polycristalline Hollow Cylinders and the Generalized Critical State Model. Physica B. 194-196

Harris JM, Ong NP, Gagnon R, Taillefer L. 1995. Washboard frequency of the moving vortex lattice in YBa2Cu3O6.93 detected by ac-dc interference. Physical Review Letters. 74:3684-3687.

Hankevych V, Kyung B, Tremblay A-MS. 2003. Weak ferromagnetism and other instabilities of the two-dimensional t-t(') Hubbard model at van Hove fillings. Physical Review B. 68:2114405/1-11. Abstract

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Weak ferromagnetism and other instabilities in 2d t-t' Hubbard at van Hove, Hankevych, Kyung, Tremblay, 2003.pdf

Garate I, Glazman L. 2012. Weak localization and antilocalization in topological insulator thin films with coherent bulk-surface coupling. Physical Review B - Condensed Matter and Materials Physics. 86

Mathieu P, Sénéchal D. 1991. A well-defined multicritical series in the Hermitian one-matrix model. Physics Letters B. 267:475–480.

Xu ZA, Zhang Y, Ong NP, Krishana K, Gagnon R, Taillefer L. 2000. Wiedemann-Franz ratio in YBa2Cu3O7-δ determined from the thermal Hall conductivity. Physica C: Superconductivity and its Applications. 341-348:III/.

Xu ZA, Zhang Y, Ong NP, Krishana K, Gagnon R, Taillefer L. 2000. The Wiedemann-Pranz ratio in YBa2Cu3O7-δ determined from the thermal Hall conductivity. Physica C: Superconductivity and its Applications. 341-348:1833-1836.

Chitov GY, Bourbonnais C. 2003. Wilson-Kadanoff renormalization group in higher orders: One-dimensional g-ology model as an example. Nuclear Physics B. 663:568-590.

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