Events at Physics |
Events on Thursday, April 24th, 2008
- R. G. Herb Condensed Matter Seminar
- Rare events and phase transitions in reaction-diffusion systems
- Time: 10:00 am
- Place: 5310 Chamberlin
- Speaker: Alex Kamenev, University of Minnesota
- Abstract: I shall discuss a way to evaluate tails of the probability distribution functions in stochastic reaction-diffusion systems. The method is based on the semi-classical treatment of a proper ''quantum'' field theory, which may be associated with the reaction-diffusion models. The same set of ideas may be applied to a classification of non-equilibrium phase transitions, taking place in these models.
- Host: Vavilov
- Special Atomic Physics Seminar
- Quantum memory for sqeezed light
- Time: 3:00 pm
- Place: 5310 Chamberlin
- Speaker: Dmitry Korystov, Institute for Quantum Information Science, University of Calgary
- Abstract: The talk will be focused on our recent progress in realization of quantum memory using electromagnetically induced transparency (EIT). For the first time storage and retrieval of a squeezed vacuum state in atomic rubidium atoms was demonstrated. The retrieved light retains quadrature squeezing, albeit degraded by absorption and atomic decoherence. Time-domain homodyne tomography allowed to perform full characterization of input and retrieved states, obtain density matrices of both ensembles and evaluate the memory fidelity.
- Host: Saffman
- NPAC (Nuclear/Particle/Astro/Cosmo) Forum
- Minimal Flavor Violation: from quarks to leptons
- Time: 4:00 pm - 5:00 pm
- Place: 4274 Chamberlin
- Speaker: Vincenzo Cirigliano, Los Alamos
- Abstract: In this talk I discuss the formulation of the "minimal flavor violation" hypothesis in the lepton sector. I then construct the relevant low-energy effective field theory and analyze the phenomenological signatures of this scenario.