Department of Physics | Université de Sherbrooke

Skip to Main Content Area

Upcoming events

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
- Voir Google Calendar

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.
- Voir Google Calendar

Mon, 06/10/2013 - 12:30

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

Tue, 06/11/2013 - 00:00

Wolfgang Belzig, l'Université de Constance, Allemagne
- Voir Google Calendar

Mansouri S, Charpentier S, Jandl S, Fournier P, Mukhin AA, Ivanov YV, et al. A micro-Raman study of a Pr0.5Ca0.5MnO3 single crystal and thin films. Journal of Physics: Condensed Matter. 2009;21:386004 (6pp). Abstract

Iliev MN, Gospodinov MM, Singh MP, Meen J, Truong KD, Fournier P, et al. Growth, magnetic properties, and Raman scattering of La2 NiMnO6 single crystals. Journal of Applied Physics. 2009;106.

Gautreau O, Harnagea C, Gunawan L, Nechache R, Singh MP, Fournier P, et al. Piezoresponse force microscopy and magnetic force microscopy characterization of [gamma]-Fe2O3-BiFeO3 nanocomposite/Bi3.25La0.75Ti3O12 multiferroic bilayers. Journal of Magnetism and Magnetic Materials. 2009;321:1799-802.

Saadaoui H, MacFarlane WA, Salman Z, Morris D, Chow KH, Fan I, et al. β-NMR investigation of the vortex lattice near the interface of silver and Pr1.85 Ce0.15 CuO4 - δ thin films. Physica B: Condensed Matter. 2009;404:727-9.

Mansouri S, Charpentier S, Jandl S, Fournier P, Mukhin AA, Ivanov VY, et al. A micro-Raman study of a Pr0.5Ca0.5MnO3 single crystal and thinfilms. Journal of Physics Condensed Matter. 2009;21.

Singh MP, Truong KD, Jandl S, Fournier P. Long-range Ni/Mn structural order in epitaxial double perovskite La[sub 2]NiMnO[sub 6] thin films. Physical Review B. 2009;79:224421.

Truong KD, Singh MP, Jandl S, Fournier P. Influence of Ni/Mn cation order on the spin-phonon coupling in multifunctional La2 NiMnO6 epitaxial films by polarized Raman spectroscopy. Physical Review B. 2009;80.

Iliev MN, Gospodinov MM, Singh MP, Meen J, Truong KD, Fournier P, et al. Growth, magnetic properties, and Raman scattering of La[sub 2]NiMnO[sub 6] single crystals. Journal of Applied Physics. 2009;106:023515.

Singh MP, Truong KD, Laverdière J, Charpentier S, Jandl S, Fournier P. Cationic ordering and role of A-site ion in manganese-based double perovskites. In: Proceedings of the 52nd Annual Conference on Magnetism and Magnetic Materials. Vol 103. AIP; 2008. 07E315.

Li SY, Bonnemaison J-, Payeur A, Fournier P, Wang CH, Chen XH, et al. Low-temperature phonon thermal conductivity of single-crystalline Nd2 Cu O4: Effects of sample size and surface roughness. Physical Review B. 2008;77.

login