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Q: Fachverband Quantenoptik und Photonik

Q 22: Quantum Optics I

Q 22.4: Talk

Monday, March 11, 2019, 17:00–17:15, S Gr. HS Maschb.

Probing quantum dynamical couple correlations with time-domain interferometry — Salvatore Castrignano and •Jörg Evers — Max-Planck-Institut für Kernphysik, Heidelberg, Germany

Spatial and temporal correlations among particles are key to the exploration of complex many-body phenomena. However, it remains a challenge to access such correlations in many experimental settings of interest. Time-domain interferometry (TDI) is a promising method to characterize spatial and temporal correlations over longer timescales. TDI relies on the interference of two indistinguishable scattering pathways, which probe a target at different times. The interference signal then contains information about the so-called intermediate scattering function and the related dynamical couple correlations characterizing the target. TDI has been theoretically studied and experimentally demonstrated using x-ray scattering ([1,2] and references therein), though only for classical target systems. In this talk, we will present a quantum analysis [3], and suggest a scheme which allows to access quantum dynamical correlations. We further show how TDI can be used to exclude classical models for the target dynamics, and illustrate our results with the toy model system of a single particle in a double well potential.

[1] A. Q. R. Baron et al., Phys. Rev. Lett. 79, 2823 (1997)

[2] M. Saito et al., Sci. Rep. 7, 12558 (2017)

[2] S. Castrignano and J. Evers, arXiv:1805.01672 [quant-ph]