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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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Kyung B, Sénéchal D, Tremblay A-. Pairing dynamics in strongly correlated superconductivity. Physical Review B. 2009;80:205109/1-8. Abstract
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application/pdf iconPairing dynamics in strongly correlated superconductivity, Kyung, Senechal, Tremblay.pdf
Balzer M, Kyung B, Sénéchal D, Tremblay A-, Potthoff M. First-order Mott transition at zero temperature in two dimensions: Variational plaquette study. Europhysics Letters. 2009;85:17002/1-6. Abstract
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application/pdf iconFirst order Mott transition at zero temperature in two dimensions, variational plaquette study, Balzer, Kyung, Senechal, Tremblay, Potthoff.pdf
Kancharla SS, Kyung B, Sénéchal D, Civelli M, Capone M, Kotliar G, et al. Anomalous superconductivity and its competition with antiferromagnetism in doped Mott insulators. Physical Review B. 2008;77:184516/1-12. Abstract
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application/pdf iconAnomalous superconductivity in doped Mott insulators, Kancharla, Civelli, Capone, Kyung, Senechal, Kotliar, Tremblay, pub 2008.pdf
Hassan SR, Davoudi B, Kyung B, Tremblay A-. Conditions for magnetically induced singlet d-wave superconductivity on the square lattice. Physical Review B. 2008;77:094501/1-9. Abstract
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application/pdf iconConditions for magnetically induced singlet d-wave superconductivity on the square lattice, Hassan, Davoudi, Kyung, Tremblay.pdf
Kyung B, Kotliar G, Tremblay A-. Quantum Monte Carlo study of strongly correlated electrons: Cellular dynamical mean-field theory. Physical Review B. 2006;73:205106/1-13. Abstract
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application/pdf iconQuantum Monte Carlo Study of Strongly Correlated Electrons, Cellular Dynamical Mean-Field Theory, Kyung, Kotliar, Tremblay.pdf
Kyung B, Kancharla SS, Sénéchal D, Tremblay A-, Civelli M, Kotliar G. Pseudogap induced by short-range spin correlations in a doped Mott insulator. Physical Review B. 2006;73:1651114/1-6. Abstract
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application/pdf iconPseudogap induced by short-range spin correlations in a doped Mott insulator, Kyung, Kancharla, Senechal, Tremblay, Civelli, Kotliar, 2006.pdf
Tremblay A-, Kyung B, Sénéchal D. Pseudogap and high-temperature superconductivity from weak to strong coupling. Towards quantitative theory. Fizika Nizkikh Temperatur (Kharkov). 2006;32:561-95.
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application/pdf iconPseudogap and high-temperature superconductivity from weak to strong coupling. Towards quantitative theory, Tremblay, Kyung, Senechal, 2005_LTP_32.pdf
Tremblay A-, Kyung B, Sénéchal D. Pseudogap and high-temperature superconductivity from weak to strong coupling. Towards a quantitative theory. Low Temperature Physics. 2006;32:424-51. Abstract
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application/pdf iconPseudogap and high-temperature superconductivity from weak to strong coupling. Towards quantitative theory, Tremblay, Kyung, Senechal, 2005_LTP_32.pdf
Hankevych V, Kyung B, Daré A-, Sénéchal D, Tremblay A-. Strong- and weak-coupling mechanisms for pseudogap in electron-doped cuprates. Journal of Physics and Chemistry of Solids. 2006;67:189.
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application/pdf iconStrong and weak coupling mechanisms for pseudogap in e-doped, Hankevych, Kyung, Dare, Senechal, Tremblay, 2004.pdf
Kyung B, Tremblay A-. Mott transition, antiferromagnetism, and d-wave superconductivity in two-dimensional organic conductors. Physical Review Letters. 2006;97:046402/1-4. Abstract
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application/pdf iconMott transition, antiferromagnetism, and d-wave superconductivity in two-dimensional organic conductors, Kyung, Tremblay 2006.pdf
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