Département de physique | Université de Sherbrooke

Skip to Main Content Area

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.
- Voir Google Calendar

lun, 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

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

mar, 06/11/2013 - 00:00

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

Jandl S, Nekvasil V, Divi{\v s} M, Mukhin AA, Hölsä J, Sadowski ML. Infrared study of the crystal-field excitations in NdMnO3 in high magnetic fields. Physical Review B. 2005;71:024417-1.

Asselin S, Jandl S, Fournier P, Mukhin AA, Ivanov VY, Balbashov AM. Resonant micro-Raman study of Nd0.5Sr0.5MnO 3. Journal of Physics Condensed Matter. 2005;17:5247-54.

Richard P, Jandl S, Poirier M, Fournier P, Nekvasil V, Sadowski ML. Infrared Zeeman study of the Nd3+-Cu2+ anisotropic exchange interaction in Nd2CuO4. Physical Review B. 2005;72:1-10.

Richard P, Poirier M, Jandl S, Fournier P. Impact of the reduction process on the long-range antiferromagnetism in Nd[sub 1.85]Ce[sub 0.15]CuO[sub 4]. Physical Review B. 2005;72:184514.

Richard P, Poirier M, Jandl S, Fournier P. Impact of the reduction process on the long-range antiferromagnetism in Nd1.85Ce0.15CuO4. Physical Review B. 2005;72:1-4.

Asselin S, Jandl S, Fournier P, Mukhin AA, Ivanov YV, Balbashov AM. Resonant micro-Raman study of Nd0.5Sr0.5MnO3. Journal of Physics: Condensed Matter. 2005;17:5247-54. Abstract

Richard P, Jandl S, Poirier M, Fournier P, Nekvasil V, Sadowski ML. Infrared Zeeman study of the Nd[sup 3+]-Cu[sup 2+] anisotropic exchange interaction in Nd[sub 2]CuO[sub 4]. Physical Review B. 2005;72:014506.

Richard P, Poirier M, Jandl S. Low-temperature magnetism of Nd2 CuO4: An ultrasonic investigation. Physical Review B. 2005;71:1-7.

Jandl S, Mukhin AA, Ivanov VY, Nekvasil V, Sadowski ML. Raman-active phonons and Nd3+ crystal-field studies of weakly doped Nd1-x Srx MnO3. Physical Review B. 2005;72.

Campos S, Petit J, Viana B, Jandl S, Vivien D, Ferrand B. {Spectroscopic investigation of the laser materials Yb3+:RE 2SiO5}. In: Proceedings of SPIE - The International Society for Optical Engineering. Vol 5460.; 2004. p. 335-43.

login