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Prochains séminaires

mar, 05/21/2013 - 12:30

Gabriel Poulin-Lamarre
- 12:30
- D3-2040
- To be announced
- Voir Google Calendar

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.
- Voir Google Calendar

lun, 06/10/2013 - 12:30

Frank Verstraete , Université de Vienne
- 12:30
- D3-2040
- To be announced
- Voir Google Calendar

Publications

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1999

Chiao M, Hill RW, Lupien C, Popić B, Gagnon R, Taillefer L. 1999. Quasiparticle transport in the vortex state of YBa2Cu3O6.9. Physical Review Letters. 82:2943-2946.

Gordeev SN, Rassau AP, Langan RM, De Groot PAJ, Geshkenbein VB, Gagnon R, Taillefer L. 1999. Resistivity of clean YBa2Cu3O7-δ in the pinned-liquid state. Physical Review B. 60:10477-10483.

Langan RM, Gordeev SN, Oussena M, De Groot PAJ, Jansen AGM, Gagnon R, Taillefer L. 1999. Scaling behaviour of magneto-resistance in clean YBa2Cu3O7-δ single crystals in the vortex liquid state. Physica C: Superconductivity and its Applications. 313:294-304.

1998

Bracanovic D, Gordeev SN, Pinfold S, Langan R, Oussena M, De Groot PAJ, Gagnon R, Taillefer L. 1998. Comparative AC susceptibility and resistivity studies of the vortex lattice melting transition in detwinned YBa2Cu3O7-δ single crystals. Physica C: Superconductivity and its Applications. 296:1-6.

Fournier P, Mohanty P, Maiser E, Darzens S, Venkatesan T, Lobb CJ, Czjzek G, Webb RA, Greene RL. 1998. Insulator-Metal Crossover near Optimal Doping in Pr2-xCexCuO4: Anomalous Normal-State Low Temperature Resistivity. Phys.\ Rev.\ Lett.. 81:4720.

Martel J-F, Jandl S, Lejus AM, Viana B, Vivien D. 1998. Optical crystal field study of Sm2O3 (C- and B-type). Journal of Alloys and Compounds. 275-277:353-355.

Langan RM, Gordeev SN, De Groot PAJ, Jansen AGM, Gagnon R, Taillefer L. 1998. Phase diagram of optimally doped YBa2Cu3O7-δ: Effect of oxygen stoichiometry. Physical Review B. 58:14548-14555.

Obermair C, Goll G, Löhneysen HV, Yanson IK, Taillefer L. 1998. Surface-dependent Andreev reflection on UPt3. Physical Review B. 57:7506-7509.

Lamoureux G, Caillé A, Sénéchal D. 1998. Thermal phase diagrams of columnar liquid crystals. Phys. Rev. E. 58:5898–5908.

1997

Bracanovic D, Pinfold S, Oussena M, Gordeeva S, Langan R, De Groot PAJ, Gagnon R, Taillefer L. 1997. a.c. susceptibility studies of the vortex lattice melting transition in clean, detwinned YBa2Cu3O6.92 single crystals. Physica C: Superconductivity and its Applications. 282:2037-2038.

Gordeev SN, De Groot PAJ, Oussena M, Volkozub AV, Pinfold S, Langan R, Gagnon R, Taillefer L. 1997. Current-induced organization of vortex motion in type-II superconductors. Nature. 385:324-325.

Gordeev SN, De Groot PAJ, Oussena M, Volkozub AV, Langan RM, Rassau AP, Gagnon R, Taillefer L. 1997. Current-induced resistivity hysteresis in detwinned YBa2Cu3O7-δ single crystals. Physica C: Superconductivity and its Applications. 282:2031-2032.

Lefebvre J, Beerens J, Bourbonnais C, Lenoir C, Batail P. 1997. Far-infrared photoconductivity resonance in the FISDW phase of (TMTSF)2ClO4. Synthetic Metals. 86:1957-1958.

Langan RM, Gordeev SN, Oussena M, Pinfold S, De Groot PAJ, Jansen L, Gagnon R, Taillefer L. 1997. Field induced suppression of the vortex lattice melting transition in twinned YBa2Cu3O7-δ. Physica C: Superconductivity and its Applications. 282:2017-2018.

Chiao M, Lussier B, Ellman B, Taillefer L. 1997. Heat conduction in the heavy fermion superconductor UPd2Al3. Physica B: Condensed Matter. 230-232:370-372.

Deligiannis K, De Groot PAJ, Oussena M, Pinfold S, Langan R, Gagnon R, Taillefer L. 1997. New features in the vortex phase diagram of YBa2Cu3O7-δ. Physical Review Letters. 79:2121-2124.

Taillefer L, Ellman B, Lussier B, Poirier M. 1997. On the gap structure of UPt3: Phases A and B. Physica B: Condensed Matter. 230-232:327-331.

Jandl S, Rheault J-P, Poirier M, Ait-Ouali A, Lejus AM, Vivien D. 1997. Optical and microwave study of Nd3+ ions in Nd2O3. Physical Review B. 56:11600-11603.

Gordeev SN, De Groot PAJ, Oussena M, Langan RM, Rassau AP, Gagnon R, Taillefer L. 1997. Organisation of vortex motion in detwinned YBa2Cu3O7-δ single crystals. Physica C: Superconductivity and its Applications. 282:2033-2034.

Langan RM, Gordeev SN, Oussena M, Pinfold S, De Groot PAJ, Gagnon R, Taillefer L. 1997. The peak effect as a phase boundary in detwinned YBa2Cu3O7-δ. Physica C: Superconductivity and its Applications. 282:2039-2040.

Girt E, Altounian Z, Swainson IP, Lupien C, Yang J. 1997. Structural properties of Nd2Fe14-δAlδB (δ = 0, 0.5). Physica B: Condensed Matter. 241-243:651-653.

Loeser AG, Shen Z-X, Schabel MC, Kim C, Zhang M, Kapitulnik A, Fournier P. 1997. Temperature and doping dependence of the Bi-Sr-Ca-Cu-O electronic structure and fluctuation effects. Phys. Rev. B. 56:14185.

Fournier P, Jiang X, Jiang W, Mao SN, Venkatesan T, Lobb CJ, Greene RL. 1997. Thermomagnetic transport properties of Nd1.85Ce0.15CuO4+d films: Evidence for two types of charge carriers. Phys. Rev. B. 56:14149.

Taillefer L, Lussier B, Gagnon R, Behnia K, Aubin H. 1997. Universal heat conduction in YBa2Cu3O6.9. Physical Review Letters. 79:483-486.

1996

Lussier B, Ellman B, Taillefer L. 1996. Determination of the gap structure in UPt3 by thermal conductivity. Physical Review B. 53:5145-5148.

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