Department of Physics | Université de Sherbrooke

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Upcoming events

Tue, 05/21/2013 - 12:30

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

Mon, 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.
- Voir Google Calendar

Mon, 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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Wed, 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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Mon, 06/10/2013 - 12:30

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

Auban-Senzier P, Jérome D, Doiron-Leyraud N, René de Cotret S, Sedeki A, Bourbonnais C, et al. The metallic transport of (TMTSF) 2X organic conductors close to the superconducting phase. Journal of Physics Condensed Matter. 2011;23.

Auban-Senzier P, Jérome D, Doiron-Leyraud N, René de Cotret S, Sedeki A, Bourbonnais C, et al. The metallic transport of {(TMTSF) 2X} organic conductors close to the superconducting phase. Journal of Physics Condensed Matter. 2011;23.

Doiron-Leyraud N, René de Cotret S, Sedeki A, Bourbonnais C, Taillefer L, Auban-Senzier P, et al. Linear-T scattering and pairing from antiferromagnetic fluctuations in the (TMTSF)2X organic superconductors. European Physical Journal B. 2010;78:23-36.

Doiron-Leyraud N, Auban-Senzier P, René de Cotret S, Bechgaard K, Jérome D, Taillefer L. Towards a consistent picture for quasi-1D organic superconductors. Physica B: Condensed Matter. 2009.

Doiron-Leyraud N, Auban-Senzier P, René de Cotret S, Bourbonnais C, Jérome D, Bechgaard K, et al. Correlation between linear resistivity and Tc in the Bechgaard salts and the pnictide superconductor Ba ( Fe1-x Cox )2 As2. Physical Review B. 2009;80.

Auban-Senzier P, Gotschy B, Farrall A, Bourbonnais C, Jerome D, Henriques RT, et al. One dimensional physics in organic conductors (TMDTDSF)2X, susceptibility and 77Se-NMR experiments. Synthetic Metals. 1993;55:654-9.

Wzietek P, Bourbonnais C, Creuzet F, Jérome D, Bechgaard K, Batail P. Electron-electron interaction in organic conductors: An NMR approach. Synthetic Metals. 1991;42:2435-8.

Wzietek P, Bourbonnais C, Creuzet F, Jérôme D, Bechgaard K. NMR study of (TMTTF)2Br. Synthetic Metals. 1991;42:1735-9.

Bourbonnais C, Wzietek P, Creuzet F, Jérome D, Batail P, Bechgaard K. Scaling relation between nuclear relaxation and magnetic susceptibility in organic conductors: Evidence for 1D paramagnon effects. Physical Review Letters. 1989;62:1532-5.

Caron LG, Creuzet F, Butaud P, Bourbonnais C, Jérôme D, Bechgaard K. Spin-peierls and antiferromagnetic transition temperatures in (TMTTF)2PF6: EPR and NMR measurements and theory. Synthetic Metals. 1988;27:123-8.

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