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Erlangen 2018 – scientific programme

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A: Fachverband Atomphysik

A 15: Ultracold Plasmas and Rydberg Systems II (joint session Q/A)

A 15.2: Talk

Monday, March 5, 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 Weidemüller1,61Physikalisches 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.

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