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Many-body quantum optics in atomic arrays

Thursday November 10, 2022
3:30 pm

 Presenter:  Ana-Asenjo Garcia (Columbia)
 Series:  CQuIC Seminars
 Abstract:  Atomic arrays are a unique platform for many-body physics, enabling efficient and controllable atom-atom interactions in crystal-like, ordered ensembles. In this talk, I will go beyond Hamiltonian dynamics, and discuss out-of-equilbrium physics of dissipative origin, where interactions are mediated by electromagnetic vacuum fluctuations and photon exchange. In particular, I will focus on the most paradigmatic many-body problem in quantum optics, Dicke superradiance, where a collection of initially-inverted atoms synchronizes as they decay, emitting a short and intense pulse of light. I will show that superradiance is a universal phenomenon in ordered arrays (either of atoms in free space or coupled to one-dimensional photonic channels), and is controlled by the lattice constant and array dimensionality. Our predictions can be tested in state of the art experiments with arrays of neutral atoms, molecules, and solid-state emitters and pave the way towards understanding the role of many-body decay in quantum simulation, metrology, and lasing.
 Host:  Ivan Deutsch
 Location:  PAIS-2540, PAIS

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