Topic: Individual atoms

Reliable photon sources are essential for optical quantum communication and computation. This lecture compares single-photon generation through nonlinear optical processes with controlled emission from individual atoms. It discusses performance, limitations and integration, then extends the comparison to sources of entangled photons and more elaborate quantum states of light.

This seminar extends quantum gas microscopy from lattice systems to continuous, strongly interacting Fermi gases. Measurements resolving individual atoms reveal spatial density and spin correlations, including higher-order correlations. The discussion explains how this experimental access opens questions that were difficult to investigate with earlier probes of dilute quantum matter.