Ivan Amelio

TL;DR: In this paper , the authors investigated the finite-size origin of the emission linewidth of a spatially extended, one-dimensional non-equilibrium condensate and showed that the well-known Schawlow-Townes scaling of laser theory only holds for small system sizes, while in larger systems the linwidth displays a novel scaling determined by Kardar-Parisi-Zhang physics.

TL;DR: In this paper , the authors apply the protocol recently proposed by Wang to extract two-dimensional polaron spectra in a Fermi superfluid with an impurity, and show explicitly that this is not the case and, in the absence of incoherent processes, multidimensional spectroscopy does not bring much additional information.

TL;DR: Researchers propose a spectroscopic method to detect vortex proliferation in neutral superfluids using a quantum impurity, revealing distinct signatures across the BKT and BEC transitions in 2D and 3D systems at finite temperatures.

TL;DR: In this paper , a theory of topological laser operation is presented, and the coherence properties of the emission are characterized using statistical mechanics concepts, the fundamental limitations identified, and robustness against fabrication disorder highlighted.