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Prochains séminaires

lun, 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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lun, 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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mer, 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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lun, 06/10/2013 - 12:30

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

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mar, 06/11/2013 - 00:00

  1. Wolfgang Belzig, l'Université de Constance, Allemagne
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Vilk YM, Allen S, Touchette H, Moukouri S, Chen L, Tremblay A-. Attractive Hubbard model and single-particle pseudogap caused by classical pairing fluctuations in two-dimensions. Journal of Physics and Chemistry of Solids. 1998;59:1873-5. Abstract
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application/pdf iconAttractive_Hubbard_Model_and_Single-Particle_Pseudogap_Vilk_Allen_Touchette_Moukouri_Chen_Tremblay.pdf
Veilleux AF, Daré A-, Chen L, Vilk YM, Tremblay A-. Quantum Monte Carlo simulations for a model of high-tem¬perature superconductors: effect of next-nearest-neighbor hopping. Vol University of Toronto Press. Ross JW, editor.; 1994.
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Daré AM, Chen L, Tremblay A-. Correlation-functions of the Hubbard-model At Low-density In A Crossing-symmetrical Approximation - Comparisons With Monte-carlo Simulations. Physica B. 1994;194:1413-4. Abstract
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application/pdf iconPhysicaB_194_196_1413(1994).pdf
Vilk YM, Chen L, Tremblay A-. 2-particle Self-consistent Theory For Spin and Charge Fluctuations In the Hubbard-model. Physica C. 1994;235:2235-6. Abstract
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Vilk YM, Chen L, Tremblay A-. Theory of Spin and Charge Fluctuations In the Hubbard-model. Physical Review B. 1994;49:13267-70. Abstract
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application/pdf iconTheory spin and charge fluctuations in Hubbard, Vilk, Chen, Tremblay 1994.pdf
Daré AM, Chen L, Tremblay A-. Comparisons Between Monte-carlo Simulations and A Simple Crossing-symmetrical Approach To the Hubbard-model At Low-density. Physical Review B. 1994;49:4106-18. Abstract
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application/pdf iconcomparisons between monte carlo and crossing symmetric, dare, chen, tremblay, 1994.pdf
Bénard P, Chen L, Tremblay A-. Neutron-scattering Measurements As A Test of Theories of High-temperature Superconductivity. Physical Review B. 1993;47:589-92. Abstract
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application/pdf iconPhysRevB.47.589.pdf
Chen L, Mei CJ, Tremblay A-. Flux-quantization In Rings For Hubbard (attractive and Repulsive) and T-j-like Hamiltonians - Comment. Physical Review B. 1993;47:15316-8. Abstract
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application/pdf iconPhysRevB.47.15316.pdf
Bénard P, Chen L, Tremblay A-. Magnetic Neutron-scattering From 2-dimensional Lattice Electrons - the Case of La2-xsrxcuo4. Physical Review B. 1993;47:15217-41. Abstract
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application/pdf iconPhysRevB.47.15217.pdf
Chen L, Tremblay A-. Determinant Monte-carlo For the Hubbard-model With Arbitrarily Gauged Auxiliary Fields. International Journal of Modern Physics B. 1992;6:547-60. Abstract
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application/pdf iconDeterminant_Monte_Carlo_for_the_Hubbard_Model.pdf
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