Rostock 2019 – scientific programme
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A: Fachverband Atomphysik
A 4: Atomic systems in external fields
A 4.7: Talk
Monday, March 11, 2019, 12:15–12:30, S HS 3 Physik
Hamiltonian engineering for studying many-body dynamics in strongly interacting Rydberg systems — •Nithiwadee Thaicharoen1, Renato Ferracini Alves1, Titus Franz1, Sebastian Geier1, Alexander Müller1, Andre Salzinger1, Annika Tebben1, Clément Hainaut1, Gerhard Zürn1, and Matthias Weidemüller1,2 — 1Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany — 2Shanghai Branch, University of Science and Technology of China, Shanghai 201315, China
Dipolar interacting Rydberg spin systems have been ideal platforms to study non-equilibrium phenomena of isolated quantum systems. Their tunable strong, long-range interactions provide new opportunities to investigate the dynamics of strongly correlated many-body quantum systems with beyond nearest-neighbor coupling. Here, the system can either relaxes to a thermal equilibrium or reaches nonthermal-fixed points, where effect of disorders, external fields and fluctuations play important roles. In this work, we present an experimental realization of a dipolar spin-1/2 model by coupling two strongly interacting Rydberg states utilizing a microwave field. We propose a scheme to engineer the Hamiltonian of the system using dynamical pulse sequence of the microwave field to identify if the initial order of the system persist after time evolution of the system. The global magnetization and its variance extracted from state-selective detection reveal if the system is localized or reaches a thermal equilibrium.