Erlangen 2018 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 15: Ultracold Plasmas and Rydberg Systems II (joint session Q/A)
A 15.2: Vortrag
Montag, 5. März 2018, 16:30–16:45, K 2.013
Realization of a XXZ-model using Rydberg atoms — •Renato Ferracini Alves1, Miguel Ferreira Cao1, Titus Franz1, Martin Gärttner2, Asier Piñeiro Orioli3, Andre Salzinger1, Adrien Signoles1, Nithiwadee Thaicharoen1, Shannon Whitlock1,4, Gerhard Zürn1, Jürgen Berges3,5, and Matthias Weidemüller1,6 — 1Physikalisches Institut, Universität Heidelberg, Germany — 2Kirchhoff-Institut für Physik, Universität Heidelberg, Germany — 3Institut für Theoretische Physik, Universität Heidelberg, Germany — 4IPCMS and ISIS, University of Strasbourg and CNRS, Strasbourg, France — 5ExtreMe Matter Institute EMMI, Darmstadt, Germany — 6Shanghai Branch, University of Science and Technology of China, Shanghai, China
Cold Rydberg gases are a suitable platform for studying quantum many body dynamics, due to its strong and long range interactions. Questions regarding thermalization in closed quantum systems and relaxation dynamics after a quench can be addressed experimentally. This project investigates the many body dynamics of a few thousand disordered Rydberg atoms. In particular we realize a Heisenberg XXZ spin model by mapping two interacting Rydberg states to an effective spin 1/2 system. Coupling these states with a phase-controlled microwave radiation, allows us to perform arbitrary global initial state-preparation and, together with state selective ionization, a state-tomographic detection. With these techniques we extract the magnetization and study its time evolution. In this talk we will focus on recent measurements of the spin dynamics after a quench.