Photon number statistics uncover the fluctuations in non-equilibrium lattice dynamics.

ABSTRACT: Fluctuations of the atomic positions are at the core of a large class of unusual material properties ranging from quantum para-electricity to high temperature superconductivity. Their measurement in solids is the subject of an intense scientific debate focused on seeking a methodology capable of establishing a direct link between the variance of the atomic displacements and experimentally measurable observables. Here we address this issue by means of non-equilibrium optical experiments performed in shot-noise-limited regime. The variance of the time-dependent atomic positions and momenta is directly mapped into the quantum fluctuations of the photon number of the scattered probing light. A fully quantum description of the non-linear interaction between photonic and phononic fields is bench

SUBMITTER: Esposito M 

PROVIDER: S-EPMC4703887 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature