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.
- Voir Google Calendar

Mon, 06/10/2013 - 12:30

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

Schicho S, Jaouad A, Sellmer C, Morris D, Aimez V, Arès R. Black germanium produced by inductively coupled plasma etching. Materials Letters. 2013;94:86-8.

Roy-Guay D, Pioro-Ladrière M, Morris D, Tallaire A, Achard J, Drouin D. Cathodoluminescence and photoluminescence of NV centers. International Journal of Nanoscience. 2012;11.

Zribi J, Morris D, Arès R. Formation and morphological evolution of InAs quantum dots grown by chemical beam epitaxy. Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures. 2012;30.

Kumar S, Allard J-, Morris D, Dory YL, Lepage M, Zhao Y. Near-infrared light sensitive polypeptide block copolymer micelles for drug delivery. Journal of Materials Chemistry. 2012;22:7252-7.

Allard J-, Cornet A, Debacq C, Meurens M, Houde D, Morris D. Improved detection sensitivity of D-mannitol crystalline phase content using differential spectral phase shift terahertz spectroscopy measurements. Optics Express. 2011;19:4644-52.

Farhi G, Morris D, Charlebois SA, Raskin J-. The impact of etched trenches geometry and dielectric material on the electrical behaviour of silicon-on-insulator self-switching diodes. Nanotechnology. 2011;22.

Fekecs A, Bernier M, Morris D, Chicoine M, Schiettekatte F, Charette P, et al. Fabrication of high resistivity cold-implanted InGaAsP photoconductors for efficient pulsed terahertz devices. Optical Materials Express. 2011;1:1165-77.

Hadj Alouane MH, Ilahi B, Maaref H, Salem B, Aimez V, Morris D, et al. Temperature dependent photoluminescence properties of InAs/InP quantum dashes subjected to low energy phosphorous ion implantation and subsequent annealing. Journal of Nanoscience and Nanotechnology. 2011;11:9251-5.

Savard S, Allard J-, Bernier M, Petersen JC, Dodge JS, Fournier P, et al. Photoexcited carrier relaxation dynamics and terahertz response of photoconductive antennas made on proton bombarded GaAs materials. Journal of Applied Physics. 2010;108:124507.

Zaâboub Z, Ilahi B, Salem B, Aimez V, Morris D, Sfaxi L, et al. Persistence of In/Ga intermixing beyond the emission energy blueshift saturation of proton-implanted InAs/GaAs quantum dots. Journal of Applied Physics. 2010;107.

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