KIP publications

year 2017
author(s) J. Tomkovič, W. Muessel, H. Strobel, S. Löck, P. Schlagheck, R. Ketzmerick, M. K. Oberthaler
title Experimental observation of the Poincaré-Birkhoff scenario in a driven many-body quantum system
KIP-Nummer HD-KIP 17-12
KIP-Gruppe(n) F17,P2
document type Paper
source Phys. Rev. A 95 (2017) 011602
doi 10.1103/PhysRevA.95.011602
Abstract (en)

Accessing the connection between classical chaos and quantum many-body systems has been a long-standing experimental challenge. Here, we investigate the onset of chaos in periodically driven two-component Bose-Einstein condensates, whose small quantum uncertainties allow for exploring the phase space with high resolution. By analyzing the uncertainties of time-evolved many-body states, we find signatures of elliptic and hyperbolic periodic orbits generated according to the Poincaré-Birkhoff theorem, and the formation of a chaotic region at increasing driving strengths. The employed fluctuation analysis allows for probing the phase-space structure by use of only short-time quantum dynamics.

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URL PhysRevA.95.011602
Datei pdf
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