PD Dr. Roman Schmied
Roman Schmied
Philosophisch-Naturwissenschaftliche Fakultät
Departement Physik
FG Treutlein


Klingelbergstrasse 82
4056 Basel

Tel. +41 61 207 37 14

PD Dr. Roman Schmied

Short Biography

Roman Schmied studied Physics at the École Polytechnique Fédérale de Lausanne, at the University of Texas at Austin, and at Princeton University. He received his PhD degree in Physical Chemistry from Princeton University in 2006, after which he held research positions at the Max Planck Institute of Quantum Optics in Garching, at the National Institute of Standards and Technology in Boulder, and in the Physics department of the University of Basel. He is currently doing research in the departments of Physics and Biomedical Engineering of the University of Basel, and employed as substitute Professor of Physics at the Albert-Ludwigs-University of Freiburg. He received the Venia Docendi in Physics from the University of Basel in 2017.

Research Summary

My research focuses on the tools for building practical quantum-mechanical devices. On the one hand, these devices require a physical implementation, for example a structured electromagnetic ion trap or magnetic atom trap that hold the quantum information carriers. I have developed methods for designing such traps, and am designing traps for ongoing experiments. On the other hand, it is equally important to determine in general what potential these quantum devices hold over more classical devices. In particular I am studying the capabilities of spin-squeezed states of Bose-Einstein condensates as metrological probes and as many-body witnesses of the fundamentally nonlocal causality of nature.

Pezze, L., Smerzi, A., Oberthaler, M. K., Schmied, R. & Treutlein, P. Quantum metrology with nonclassical states of atomic ensembles. Reviews of Modern Physics90, (2018).   edoc
Oudot, E., Bancal, J.-D., Schmied, R., Treutlein, P. & Sangouard, N. Optimal entanglement witnesses in a split spin-squeezed Bose-Einstein condensate. Physical Review A95, 52347 (2017).   edoc | Open Access
Wagner, S., Schmied, R., Fadel, M., Treutlein, P., Sangouard, N. & Bancal, J.-D. Bell Correlations in a Many-Body System with Finite Statistics. Physical Review Letters119, 170403 (2017).   edoc | Open Access