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Events at Physics

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Events on Thursday, October 1st, 2015

R. G. Herb Condensed Matter Seminar
Tunable mid-infrared photonics
Time: 10:00 am
Place: 5310 Chamberlin Hall
Speaker: Mikhail Kats
Abstract: The mid-infrared (mid-IR) spectral range (wavelengths from ~ 2 μm to ~20 μm) has recently become more important for both applications and fundamental science. However, compared to their counterparts in the visible, optical components in the mid-IR are still significantly under-developed.
We create tunable optical components for the mid-IR by incorporating materials that respond to temperature, current, or applied electric field into photonic structures such as interference coatings and optical metasurfaces. In particular, we exploited the insulator-to-metal phase transition of vanadium dioxide (VO2) to create temperature- and current-tunable modulators and thermal emitters, and used electrostatic doping in graphene to construct reconfigurable metasurfaces that operate at nanosecond time scales.
Host: Saffman
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Cosmology Journal Club
An Informal discussion about a broad variety of arXiv papers related to Cosmology
Time: 12:15 pm
Place: 5242 Chamberlin Hall
Abstract: Please visit the following link for more details:
    http://cmb.physics.wisc.edu/journal/index.html
Please feel free to bring your lunch!
If you have questions or comments about this journal club, would like to propose a topic or volunteer to introduce a paper, please email Le Zhang (lzhang263@wisc.edu)
Host: Peter Timbie
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NPAC (Nuclear/Particle/Astro/Cosmo) Forum
Spectral and flavor composition of the ultrahigh energy neutrinos seen at IceCube
Time: 2:30 pm
Place: 4274 Chamberlin Hall
Speaker: Aaron Vincent, Institute for Particle Physics Phenomenology , Durham University
Abstract: I will present the main elements of our independent studies of the high-energy events seen above 28TeV by IceCube, arXiv:1404.0017 and arXiv:1502.02649. I will cover the physics involved, and show the effect of modelling and assumptions on the conclusions one can reach about the flavor composition, spectrum, and background rates. I will compare our results and methodology with the official IceCube studies, and discuss future prospects.
Host: Carlos Arguelles Delgado
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Graduate Introductory Seminar
Quantum Computing
Time: 4:30 pm
Place: 5280 Chamberlin Hall
Speaker: Coppersmith, Eriksson, Joynt, McDermott, Saffman, Vavilov, Walker, Yavuz
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