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Konopinski Physics Colloquia IUB

Department of Physics

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Title: Peter Littlewood, The University of Chicago, "Bose Condensation of Polaritons: A superfluid of light" (Departmental Awards Colloquium)
Sharing: Public
Start Time: Friday April 21, 2017 04:00 PM
End Time: Friday April 21, 2017 05:00 PM
Location: The Joseph and Sophia Konopinski Colloquium Series, Swain West 119
Free/Busy: busy

Macroscopic phase coherence is one of the most remarkable manifestations of quantum mechanics, yet it seems to be the inevitable ground state of interacting many-body systems. In the last two decades, the familiar examples of superfluid He and conventional superconductors have been joined by exotic and high temperature superconductors, ultra-cold atomic gases, both bosonic and fermionic, and recently systems of excitons, magnons, and exciton-photon superpositions called polaritons, the subject of this talk.

Engineering of optical microcavities make use of the mixing of electronic excitations with photons to create a composite boson called a polariton that has a very light mass, and recent experiments provide good evidence for a high-temperature Bose condensate. Polariton systems also offer an opportunity to use optical pumping to study quantum dynamics of a many body system outside equilibrium, in a new kind of cold atom laboratory.

Cost: FREE
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