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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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1996

Marshall DS, Dessau DS, Loeser AG, Park CH, Matsuura AY, Eckstein J, Bozovic I, Fournier P, Kapitulnik A, Spicer WE et al.. 1996. Doping Dependence of Bi2Sr2Ca1-xDyxCu2O8+d ??Fermi Surface and its Implications?? Physical Review Letters. 76:4841-4844.

Dessau DS, Marshall DS, Loeser AG, Park C-H, Matsuura AY, Shen Z-X, Fournier P, Kapitulnik A, Kishio K, Eckstein J et al.. 1996. Evolution of the Electronic Structure with doping in Bi2Sr2CaCu2O8+d - Angle Resolved Photoemission Results. J. of Electron Spectroscopy and Related Phenomena. 78:167-170.

Loeser AG, Shen Z-X, Dessau DS, Marshall DS, Park CH, Fournier P, Kapitulnik A. 1996. Excitation Gap in the Normal State of Underdoped Bi2Sr2CaCu2O8+d??? Science. 237:325-329.

Musfeldt JL, Poirier M, Batail P, Lenoir C. 1996. H-T behavior of the spin density wave condensate in (TMTSF)2AsF6. Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals. 284:121-128.

Lussier B, Taillefer L, Buyers WJL, Mason TE, Petersen T. 1996. Influence of a magnetic field on the antiferromagnetic order in UPt3. Physical Review B. 54:R6873-R6876.

Farrell DE, E.Johnston-Halperin, Klein L, Fournier P, Kapitulnik A, Forgan EM, Rae AIM, Li TW, Trawick ML, Sasik R et al.. 1996. Magnetization jumps and irreversibility in Bi2Sr2CaCu2O8. Physical Review B. 53:11807-11816.

Gordeev SN, De Groot PAJ, Oussena M, Volkorub AV, Pinfold S, Langan RM, Gagnon R, Taillefer L. 1996. Novel vortex dynamics in untwinned YBa2Cu3O7-δ single crystals. Journal of Low Temperature Physics. 105:1147-1152.

Li G, Musfeldt JL, Wang YJ, Jandl S, Poirier M, Revcolevschi A, Dhalenne G. 1996. Optical observation of the interplay between magnetic and elastic energy in a spin-Peierls system. Physical Review B. 54:R15633-R15636.

Strach T, Ruf T, Cardona M, Lin CT, Jandl S, Nekvasil V, Zhigunov DI, Barilo SN, Shiryaev SV. 1996. Raman study of intermultiplet crystal-field transitions in Sm2CuO4. Physical Review B. 54:4276-4282.

White PJ, Shen Z-X, Kim C, Harris JM, Loeser AG, Fournier P, Kapitulnik A. 1996. Rapid Suppression of the Superconducting Gap in Overdoped Bi2Sr2CaCu2O8+d. Physical Review B. 54:R15669-15672.

Taillefer L, Ellman B, Lussier B, Poirier M. 1996. Studies of the gap structure in the heavy fermion superconductor UPt3. Czechoslovak Journal of Physics. 46:793-794.

Bruls G, Finsterbusch D, Kouroudis I, Wolf B, Wichert D, Lüthi B, Jansen L, Taillefer L. 1996. Ultrasound measurements of the B-T diagram of the heavy-fermion material UPt3 in very high magnetic fields. Physica B: Condensed Matter. 223-224:36-39.

1995

Sieck M, Löhneysen HV, Taillefer L. 1995. The behavior of the heavy-fermion superconductor UPt3 under hydrostatic pressure and in a magnetic field. Physica B: Physics of Condensed Matter. 206-207:603-605.

Ilakovac V, Ravy S, Pouget JP, Lenoir C, Boubekeur K, Batail P, Babic DS, Biskup N, Korin-Hamzic B, Tomic S et al.. 1995. Enhanced charge localization in the organic alloys [(TMTSF)1-x(TMTTF)x]2ReO4. Synthetic Metals. 70:753-754.

Musfeldt JL, Poirier M, Batail P, Lenoir C. 1995. Magnetic-field behavior of the spin-density-wave state in (TMTSF)2AsF6. Physical Review B. 52:15983-15991.

Musfeldt JL, Poirier M, Batail P, Lenoir C. 1995. Microwave dielectric studies of the spin-density-wave state in (TMTSF)2PF6. Physical Review B. 51:8347-8356.

1994

Lussier B, Ellman B, Taillefer L. 1994. Anisotropy of heat conduction in the heavy fermion superconductor UPt3. Physical Review Letters. 73:3294-3297.

Fournier P, M.Aubin, LeBlanc MAR. 1994. Critical-State-Model parameters of polycrystalline YBa2Cu3O7 : Critical Current in Thin Slabs and Field Penetration in Hollow Cylinders. Physical Review B. 50:9548-9553.

Gagnon R, Lupien C, Taillefer L. 1994. Deviations from linear resistivity in YBa2Cu3O6.9. Physica C: Superconductivity and its applications. 235-240:1409-1410.

Ilakovac V, Ravy S, Pouget JP, Lenoir C, Boubekeur K, Batail P, Babic DS, Biskup N, Korin-Hamzic B, Tomic S et al.. 1994. Enhanced charge localization in the organic alloys [(TMTSF)1-x(TMTTF)x] 2ReO4. Physical Review B. 50:7136-7139.

Lefebvre J, Beerens J, Bourbonnais C, Caron LG, Lenoir C, Batail P. 1994. Gap determination in the field-induced-spin-density-wave state of (TMTSF)2ClO4 via far-infrared photoconductivity. Physical Review Letters. 72:3417-3420.

Luke GM, Keren A, Le LP, Uemura YJ, Wu WD, Bonn DA, Taillefer L, Garrett JD, Onuki Y. 1994. Muon spin relaxation in heavy fermion systems. Hyperfine Interactions. 85:397-409.

Goll G, Löhneysen HV, Yanson IK, Taillefer L. 1994. Point-contact spectroscopy on the heavy-fermion superconductor UPt3. Physica B: Physics of Condensed Matter. 199-200:110-112.

Gaulin BD, Isaacs ED, Lussier JG, Reimers JN, Gibbs D, Zschack P, Schröder A, Taillefer L, Garrett JD. 1994. Resonant magnetic X-ray scattering studies of heavy fermion superconductors. Physica B: Physics of Condensed Matter. 199-200:57-62.

Gaulin BD, Gibbs D, Isaacs ED, Lussier JG, Reimers JN, Schröder A, Taillefer L, Zschack P. 1994. Resonant magnetic X-ray scattering study of phase transitions in UPd2Als. Physical Review Letters. 73:890-893.

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