IQIM Postdoctoral and Graduate Student Seminar
East Bridge 201 (Richard P. Feynman Lecture Hall)
Measuring high-amplitude quantum motion in a nanogram object
Jack Harris,
Professor of Physics and Applied Physics,
Yale,
Abstract: I will describe measurements of individual phonons in a 1 ng body of superfluid helium. When this body is in equilibrium, its phonon correlations are consistent (up to 4th order) with a thermal state of mean occupancy ~ 1. This purity is preserved even when the mode is driven to a coherent state with an amplitude corresponding to ~100,000 phonons. I will describe how these results can be used to constrain nonlinear extensions of quantum mechanics, and to distribute entanglement over kilometer-scale optical fiber networks.
Lunch will be provided, following the talk, on the lawn north of the Bridge Building.
For more information, please contact Marcia Brown by phone at 626-395-4013 or by email at [email protected].