Physics Colloquium: "Very Attractive Photons"

Speaker Vladan Vuletic, MIT
Date: 11/1/2017
Time: 4 p.m.

141 Loomis

Event Contact: Stephanie Johansson

Department of Physics

Event Type: Seminar/Symposium

Photons, if colorful, are somewhat boring: they all move at one speed and do not interact with one another. I will present an unusual optical medium that is nonlinear at the quantum scale: In this medium, photons travel slowly, acquire mass, and exhibit strong mutual attraction, so strong that two photons can even form a bound state. Furthermore I will discuss a situation where a single photon can prepare several thousand atoms in an entangled state with a negative Wigner function, a hallmark of non-classicality. Such states can be used to improve quantum measurements by entanglement.

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