Mainz 2017 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 31: Poster: Quantum Optics and Photonics I

Q 31.90: Poster

Tuesday, March 7, 2017, 17:00–19:00, P OG1+2

Quantum signatures in time-domain interferometry — Salvatore Castrignano and •Jörg Evers — Max-Planck-Institut für Kernphysik, Heidelberg, Germany

The aim of this project is to improve an interferometric scheme proposed in 1997 by A. O. Baron [1]. In this scheme a sample to be studied is placed between two radiation-filtering foils and X-ray radiation, resonant with the Mössbauer nuclei transition, impinges on the whole system. The analysis of sample's internal dynamics is possible through detection of the scattered radiation , in particular the Fourier transform S(q,t) of the dynamical couple-correlation function for the sample G(r,t) can be obtained.

The latter function is a real or complex valued function according to the classical or quantum nature of the measured dynamics [2][3]. Therefore some variations of Baron's scheme are proposed which in principle allow to spot the presence of an imaginary part in the function G(r,t).

Moreover the interferogram in the case of a generic quantum target is derived in a fully quantum frame. In particular the dynamics of a bosonic system subject to a double well potential trap is analysed in order to understand what is the meaning of such Im G(r,t) and what kind of information about the quantum state of the system can be extracted out of it.

[1] Phys. Rev. Lett. 79, 2823

[2] Phys. Rev. 95, 249

[3] Physica 24, 404