Hannover 2016 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 11: Poster: Quantum Optics and Photonics I

Q 11.16: Poster

Montag, 29. Februar 2016, 16:30–19:00, Empore Lichthof

Simulating many-body spin-dynamics with Rydberg atoms — •Renato Ferracini Alves, Miguel Ferreira-Cao, Vladislav Gavryusev, Adrien Signoles, Gerhard Zuern, Shannon Whitlock, and Matthias Weidemüller — Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany

Simulating many-body spin-dynamics is of great interest both for its connection to practical systems, such as quantum magnetism, spintronics, and polar molecules [1], as well as for getting a deeper insight in systems driven by a many-body Hamiltonian. In our experiment we realize a Heisenberg XX-model by mapping two dipolar-interacting Rydberg states to two spins states (|nS⟩→|↓⟩ and |nP⟩→|↑⟩). This scheme allows us to explore the dynamics of spin systems with long range interactions [2].

We will present preliminary results of the measurement of microwave-driven Rabi oscillations between the spin-states, in which interactions lead to damping of the contrast for high Rydberg densities [3]. Also, we describe advanced techniques, such as Ramsey spectroscopy, that will be implemented to investigate further the spin-dynamics.

[1] B. Yan et al., Nature 501, 521-525 (2013)

[2] D. Barredo et al., Phys. Rev. Lett. 114. 113002 (2015)

[3] D. Maxwell et al., Phys. Rev. Lett. 110, 103001 (2013)