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A: Fachverband Atomphysik

A 8: Ultra-cold atoms, ions, and BEC II (joint session A/Q)

A 8.7: Vortrag

Montag, 9. März 2020, 15:45–16:00, f303

Dynamical control of conductivity in a bosonic Josephson junction — •Beilei Zhu¹, Vijay Pal Singh¹, Junichi Okamoto², and Ludwig Mathey^1,3 — ¹Zentrum für Optische Quantentechnologien and Institut für Laserphysik, Universität Hamburg, Hamburg, Germany — ²Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany — ³The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany

We propose to demonstrate dynamical enhancement of conductivity in a bosonic Josephson junction composed of two weakly coupled one dimensional condensates. A current is induced by a periodically modulated potential difference between the condensates, giving access to conductivity of the junction. We propose to control the conductivity via parametric driving of the tunneling energy. We demonstrate that the low frequency conductivity of the junction can be enhanced or suppressed, depending on the choice of the driving frequency. The experimental realization of this proposal constitutes a quantum simulation of recently proposed mechanism for optically induced superconductivity in pump-probe experiments.