Physics Colloquium: "Very Attractive Photons"
(sign-up)Vladan Vuletic, MIT
|Event Contact:||Stephanie Johansson
Department of Physics
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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