This Week at Physics

 
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This Week at Physics

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Events During the Week of November 25th through December 2nd, 2018

Monday, November 26th, 2018

No events scheduled

Tuesday, November 27th, 2018

Chaos & Complex Systems Seminar
Ergodicity in chaotic oscillators
Time: 12:05 pm
Place: 4274 Chamberlin (Refreshments will be served)
Speaker: Clint Sprott, UW Department of Physics
Abstract: The harmonic oscillator is the simplest and most common nontrivial dynamical system. The prototypical mechanical example is a mass suspended by a spring, but the same dynamics occur in most musical instruments, many electronic devices, models of economic and ecological systems, some chemical reactions, and many other real-world systems. However, most oscillations in nature are not simple but rather exhibit aperiodic fluctuations such as the weather and the stock market. I will describe a new model of a chaotic oscillator whose behavior is identical to a harmonic oscillator in equilibrium with a source of heat at a constant temperature. It represents the culmination of a 30-year search for an elegant chaotic model whose solution is ergodic and whose variables accurately exhibit a normal (Gaussian) distribution as expected for a truly random process.
Host: Clint Sprott
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Council Meeting
council meetings
Time: 3:30 pm
Place: 2314 Chamberlin Hall
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Wednesday, November 28th, 2018

Department Meeting
Department Meeting
Time: 12:15 pm
Place: 5310 Chamberlin Hall
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Thursday, November 29th, 2018

R. G. Herb Condensed Matter Seminar
TBD
Time: 10:00 am
Place: 5310 Chamberlin Hall
Speaker: Dr. Raphael Pooser, Oak Ridge National Lab
Abstract: TBD
Host: Saffman
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Friday, November 30th, 2018

Physics Department Colloquium
Special Event: Julian E. Mack Lecture
Quantum Information and Computation
Time: 3:30 pm
Place: 2241 Chamberlin Hall
Speaker: David Wineland, U Oregon
Abstract: Quantum systems such as atoms can be used to store information. For example, we can store a binary bit of information in two energy levels of an atom, labeling the state with lower energy a “0" and the state with higher energy a “1.” However, quantum systems can also exist in superposition states, thereby storing both states of the bit simultaneously, a situation that makes no sense in our ordinary-day experience. This property of quantum bits or “qubits” potentially leads to an exponential increase in memory and processing capacity. It would enable a quantum computer to efficiently solve certain problems such as factorizing large numbers, a capability that could compromise the security of current encryption systems. It could also be used to simulate the action of other important quantum systems in cases where such a simulation would be intractable on a conventional computer. A quantum computer could also realize an analog of "Schrödinger's Cat," a bizarre situation where a cat could be simultaneously dead and alive. Experiments whose goal is to realize a quantum computer based on laser manipulations of atomic ions will be described, but this is only one of several possible platforms for such a machine.
Host: Alex Levchenko
Presentation: racetrack surface electrode ion trap.jpg, Wineland by trap.jpg
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