Recent advances in superconducting quantum bits and quantum limited amplifiers have enabled a number of experiments that probe fundamental questions in quantum optics, open quantum systems, and continuous measurement. I will describe recent experiments where we use weak, continuous measurement to monitor the evolution of a superconducting qubit as it evolves in competition between driven evolution and the random evolution associated with measurement. By tracking individual quantum trajectories that evolve between an arbitrary choice of initial and final states we can deduce the most probable path through quantum state space. These results reveal the rich interplay between measurement dynamics, typically associated with wave function collapse, and unitary evolution of the quantum state as described by the Schrödinger equation.
The Ecology and Evolution of Life History Strategies In Livebearing Fish
Amanda Banet, University of British Columbia
Thursday, December 4, 2014
Biologists are fascinated with the different strategies organisms use to reproduce because these traits are directly linked with fitness. In the livebearing fish family Poeciliidae, we see immense diversity in the amount of resources devoted to reproduction, and how and when these resources are allocated. This talk explores the costs and benefits of these strategies, first examining the validity Trexler-DeAngelis model for the evolution of placental reproduction, and then investigating how pregnancy affects locomotor performance and habitat use in the Trinidadian guppy.
Reem-Kayden Center Laszlo Z. Bito '60 Auditorium Sponsored by: Biology Program; Dean of the College.
Representing Space through the Body, Environment, and Experience
Elyssa Twedt, University of Richmond
Thursday, December 4, 2014
Humans are inherently spatial individuals; we constantly explore our surroundings to determine what actions are and are not possible. But what information do people use to learn and make judgments about their environments? I assess how and under what circumstances different sources of information are used to make spatial cognition judgments in three different domains including perception, memory, and navigation. Particularly, I focus on information that comes from our own bodies, environmental context, and prior knowledge. Furthermore, I explore how the increasing presence of technology and its seamless integration into our daily lives changes the way we interact with and represent space.
Preston Theater Sponsored by: Dean of the College; Psychology Program.
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