Darrick Chang – ICFO -The Institute of Photonic Sciences
Quantum optics using atomic arrays
Our conventional theories of the quantum interactions between light and atomic media tend to treat the atoms as a smooth macroscopic medium, ignoring the possibility that the dynamics might depend strongly on microscopic configurations and disorder. Within classical optics, however, it is well-known that the details of spatial configurations of scatterers — and the associated multiple scattering and interference of light — can give rise to important new phenomena and control, ranging from Anderson localization to photonic crystals and phased array antennas. It would thus be interesting to develop a theory for multiple scattering in the quantum domain. Within this context, we discuss our recent efforts in advancing such a theory, and some of the important consequences for quantum atom-light interfaces. These include the possibility to realize polynomially or exponentially better error scalings as a function of system resources for applications such as quantum memories of light and photon-photon gates, and novel many-body phenomena driven by the granularity of the atoms, such as many-body localization of light and critical slow-down dynamics in optical lattice clocks.
Join Zoom Meeting: