Department of Physics | Université de Sherbrooke

Skip to Main Content Area

Upcoming events

Tomorrow

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
- 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

de Visser A, Flouquet J, Franse JJ, Haen P, Hasselbach K, Lacerda A, et al. Electronic instabilities in heavy-fermion compounds. Physica B: Physics of Condensed Matter. 1991;171:190-8.

Flouquet J, Brison JP, Hasselbach K, Taillefer L, Behnia K, Jaccard D, et al. Magnetism and superconductivity in heavy fermion systems. Physica C: Superconductivity and its applications. 1991;185-189:372-8.

Hasselbach K, Taillefer L, Flouquet J. The phase diagram of superconducting UPt3 for B // c. Physica B: Physics of Condensed Matter. 1990;165-166:357-8.

Hasselbach K, Lacerda A, Behnia K, Taillefer L, Flouquet J, de Visser A. Superconducting phase diagram of UPt3 studied by thermal expansion and specific heat. Journal of Low Temperature Physics. 1990;81:299-315.

Taillefer L, Behnia K, Hasselbach K, Flouquet J, Hayden SM, Vettier C. On the superconducting phase transitions of UPt3. Journal of Magnetism and Magnetic Materials. 1990;90 pt 91:623-7.

de Visser A, Menovsky AA, Franse JJ, Hasselbach K, Lacerda A, Taillefer L, et al. Anisotropy in the thermal expansion of heavy-fermion UPt3 at the superconducting transition. Physical Review B. 1990;41:7304-7.

de Visser A, Kayzel FE, Menovsky AA, Franse JJ, Hasselbach K, Lacerda A, et al. Thermal expansion of heavy-fermion superconductors. Physica B: Physics of Condensed Matter. 1990;165-166:375-6.

Fisher RA, Kim S, Woodfield BF, Phillips NE, Taillefer L, Hasselbach K, et al. Specific heat of UPt3: Evidence for unconventional superconductivity. Physical Review Letters. 1989;62:1411-4.

Hasselbach K, Taillefer L, Flouquet J. Critical point in the superconducting phase diagram of UPt3. Physical Review Letters. 1989;63:93-6.

Phillips NE, Fisher RA, Kim S, Woodfield BF, Taillefer L, Hasselbach K, et al. Evidence for unconventional superconductivity in UPt3: Splitting of the specific heat anomaly at Tc. Physica C: Superconductivity and its applications. 1989;162-164:413-4.

login