Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 62: Poster: Quantum Optics and Photonics V
Q 62.19: Poster
Donnerstag, 8. März 2018, 16:15–18:15, Redoutensaal
Proposal to identify Thermal and Non-Thermal fixed points in a strongly interacting Rydberg gas. — •Titus Franz1, Renato Ferracini Alves1, Miguel Ferreira Cao1, Adrien Signoles1, Nithiwadee Thaicharoen1, Shannon Whitlock1, Gerhard Zuern1, Jürgen Berges2, and Matthias Weidemüller1,3 — 1Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany — 2Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany — 3Shanghai Branch, University of Science and Technology of China, Shanghai 201315, China
Ultracold atoms excited to high lying Rydberg states offer an ideal platform for studying the non-equilibrium properties of long-range interacting quantum spin systems under a controlled environment. Due to the many competing effects like disorder, external fields and fluctuations, it is still an open question whether the system with the underlying Heisenberg XXZ-Hamiltonian equilibrates and reaches a thermal or non-thermal fixed point. This poster proposes a detection scheme for the absence of diffusion in a possible Many-Body-Localization phase by a measurement of the breakdown of Linear Response Theorem and the persistence of initial order after relaxation dynamics.