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Mon, 05/27/2013 - 12:30

  1. 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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Mon, 06/03/2013 - 12:30

  1. Bhaskar Roy Bardhan, Department of Physics and Astronomy, Louisiana State University
    • 12:30
    • D3-2040
    • To be annonced

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Wed, 06/05/2013 - 10:45

  1. 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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Mon, 06/10/2013 - 12:30

  1. Frank Verstraete , Université de Vienne
    • 12:30
    • D3-2040
    • To be announced

    • Voir Google Calendar

Tue, 06/11/2013 - 00:00

  1. Wolfgang Belzig, l'Université de Constance, Allemagne
    • Voir Google Calendar
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Bergeron D, Hankevych V, Kyung B, Tremblay A-. Optical and dc conductivity of the two-dimensional Hubbard model in the pseudogap regime and across the antiferromagnetic quantum critical point including vertex corrections. Physical Review B. 2011;84:085128/1-35.
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application/pdf iconOptical and DC conductivity of the two-dimensional Hubbard model in the pseudogap regime and across the antiferromagnetic quantum critical point, including vertex corrections, Bergeron, Kyung, Hankevych, Tremblay.pdf
Chakraborty S, Sénéchal D, Tremblay A-. d-wave superconductivity on the checkerboard Hubbard model at weak and strong coupling. Physical Review B. 2011;84:054545/1-8.
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application/pdf iconPhysRevB.84_054545.pdf
Tremblay A-. High-Temperature Superconductivity from Short-Range Repulsion. Physics in Canada, La physique au Canada. 2011;67:105.
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application/pdf iconHigh-temperature superconductivity from short-range repulsion, Tremblay, PaC-PiC.pdf
Tremblay A-. Superconductivity in a Nutshell . Physics in Canada, La physique au Canada. 2011;67:65-8.
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application/pdf iconSuperconductivity in a nutshell, PaC-PiC, Tremblay.pdf
Taillefer L. Préface- La supraconductivité: progrès et perspectives. Physics in Canada - La physique au Canada. 2011;67(2):59.
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application/pdf iconLa supraconductivité, progrès et perspectives, Taillefer, Tremblay.pdf
Tremblay A-. La supraconductivité en un clin d'oeil. Physics in Canada - La physique au Canada. 2011;67(2):61-4.
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application/pdf iconLa supraconductivité en un clin d'oeil, PaC-PiC, Tremblay.pdf
Okamoto S, Sénéchal D, Civelli M, Tremblay A-. Dynamical electronic nematicity from Mott physics. Physical Review B (Editor's choice). 2010;82:180511(R)/1-4. Abstract
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application/pdf iconDynamical electronic nematicity from Mott physics, Okamoto, Senechal, Civelli, Tremblay, pub.pdf
Sordi G, Haule K, Tremblay A-. Finite Doping Signatures of the Mott Transition in the Two-Dimensional Hubbard Model. Physical Review Letters. 2010;104:226401/1-4. Abstract
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application/pdf iconFinite doping signatures of the Mott transition in the two-dimensional Hubbard model, Sordi, Haule, Tremblay.pdf
Chasse D, Tremblay A-. Generalized dc and ac Josephson effects in antiferromagnets and in antiferromagnetic d-wave superconductors. Physical Review B. 2010;81:115102/1-9. Abstract
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application/pdf iconGeneralized dc and ac Josephson effects in antiferromagnets and in antiferromagnetic d-wave superconductors, Chasse, Tremblay, pub.pdf
Delannoy JY, Gingras MJ, Holdsworth PC, Tremblay A-. Low-energy theory of the t-t '-t ''-U Hubbard model at half-filling: Interaction strengths in cuprate superconductors and an effective spin-only description of La2CuO4. Physical Review B. 2009;79:235130/1-22. Abstract
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application/pdf iconPhysRevB.79.235130.pdf
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