Quantum Optics Lab

Treutlein Group

 

PD Dr. Roman Schmied

 

Contact

office2.14
lab2.19
phone +41 (0)61 207 3714
fax +41 (0)61 207 3795
mailclick here
 

Curriculum Vitæ

I studied physics at the École Polytechnique Fédérale de Lausanne and the University of Texas at Austin. Through Tom Rizzo I got involved in Physical Chemistry, and did my diploma thesis in helium nanodroplet spectroscopy at Princeton University with Kevin Lehmann and Giacinto Scoles. I then did a PhD thesis in the same group, working on the superfluidity of helium nanodroplets and on the spectroscopy of molecules solvated within these droplets. My first postdoctoral position was in the theory group of Ignacio Cirac at the Max Planck Institute of Quantum Optics in Garching, Germany, where I got involved with quantum simulators and quantum simulations. After a short stay at the NIST ion storage group in Boulder, USA, I moved to my current position with Philipp Treutlein at the University of Basel. Since 2016 I am also working in the Human Optics Lab of the University of Basel, studying external influences on the development of myopia.

 

2017Substituting Professor, Molecular and Nanophysics, University of Freiburg
2017Habilitation in Physics, University of Basel
2016-presentSenior scientist, Human Optics Lab, University of Basel.
2010-presentSenior scientist, group of Prof. P. Treutlein, University of Basel.
2010Guest researcher, NIST Ion Storage Group (D. Leibfried and D. Wineland), Boulder.
2006-2010Post doc, group of Prof. I. Cirac, MPQ Garching.
2001-2006Phd thesis in the group of Profs. K. Lehmann and G. Scoles, Princeton University.
2000-2001Diploma thesis in the group of Profs. K. Lehmann and G. Scoles, Princeton University.
1998-1999Studies of Physics at UT Austin.
1996-2000Studies of Physics at EPFL.
 

Teaching

FS 2018Computational Quantum Mechanics (lecture script)
winner of the best lecturer golden chalk award (FG Physik der Uni Basel)
SS 2017 (Uni Freiburg)Advanced Optics and Lasers (lecture script)
FS 2017Computational Quantum Mechanics (lecture script)
HS 2016Einführung in die Physik I: Mechanik und Thermodynamik
FS 2016Computational Quantum Mechanics (lecture script)
winner of the best lecturer golden chalk award (FG Physik der Uni Basel)
HS 2015Einführung in die Physik I: Mechanik und Thermodynamik
FS 2015Computational Quantum Mechanics
HS 2014Einführung in die Physik I: Mechanik und Thermodynamik
HS 2013Computational Quantum Mechanics
HS 2012Computational Quantum Mechanics
winner of the best lecturer golden chalk award (FG14 der Uni Basel)
 

Downloads

Mathematica code for electrostatics of surface ion traps and magnetostatics of surface magnetization/wire atom traps: SurfacePattern package
GAP code for calculating nuclear spin weights of molecules with significant symmetry: source code and explanations
Impermanence is a Mathematica package that provides variables whose content changes randomly over time. The longer a variable is allowed to sit around, the more its content changes from its initial value.
 

Publications

Bell correlations in a many-body system with finite statistics
S. Wagner, R. Schmied, M. Fadel, P. Treutlein, N. Sangourd, and J.-D. Bancal
Phys. Rev. Lett. 119:170403 (2017)
Optimal entanglement witnesses in a split spin-squeezed Bose-Einstein condensate
E. Oudot, J.-D. Bancal, R. Schmied, P. Treutlein, and N. Sangouard
Phys. Rev. A 95:052347 (2017)
Optimised surface-electrode ion-trap junctions for experiments with cold molecular ions
Arezoo Mokhberi, Roman Schmied, and Stefan Willitsch
New J. Phys. 19:043023 (2017)
Quantum metrology with nonclassical states of atomic ensembles
Luca Pezzè, Augusto Smerzi, Markus K. Oberthaler, Roman Schmied, and Philipp Treutlein
arXiv:1609.01609 [quant-ph]
Spin squeezing as a probe of many-body quantum correlations
Roman Schmied
Habilitationsschrift, 2016
Arrays of individually controlled ions suitable for two-dimensional quantum simulations
Manuel Mielenz, Henning Kalis, Matthias Wittemer, Frederick Hakelberg, Ulrich Warring, Roman Schmied, Matthew Blain, Peter Maunz, David L. Moehring, Dietrich Leibfried, and Tobias Schaetz
Nature Communications 7:11839 (2016)
Sideband Rabi spectroscopy of finite-temperature trapped Bose gases
Baptiste Allard, Matteo Fadel, Roman Schmied, and Philipp Treutlein
Physical Review A 93:043624 (2016)
Bell correlations in a Bose-Einstein condensate
Roman Schmied, Jean-Daniel Bancal, Baptiste Allard, Matteo Fadel, Valerio Scarani, Philipp Treutlein, and Nicolas Sangouard
Science 352:441 (2016)
Quantum State Tomography of a Single Qubit: Comparison of Methods
Roman Schmied
Journal of Modern Optics 63:1744 (2016)
Tighter quantum uncertainty relations following from a general probabilistic bound
Florian Fröwis, Roman Schmied, and Nicolas Gisin
Physical Review A 92:012102 (2015)
Lecture script: Introduction to Computational Quantum Mechanics
Roman Schmied
arXiv:1403.7050 [quant-ph]
Quantum Metrology with a Scanning Probe Atom Interferometer
Caspar F. Ockeloen, Roman Schmied, Max F. Riedel, and Philipp Treutlein
Physical Review Letters 111:143001 (2013) (synopsis)
Quantum simulation of the hexagonal Kitaev model with trapped ions
Roman Schmied, Janus H. Wesenberg, and Dietrich Leibfried
New Journal of Physics 13:115011 (2011) in the Focus on Quantum Simulation
Modified spin-wave theory with ordering vector optimization II: Spatially anisotropic triangular lattice and J1J2J3 model with Heisenberg interactions
Philipp Hauke, Tommaso Roscilde, Valentin Murg, J. Ignacio Cirac, and Roman Schmied
New Journal of Physics 13:075017 (2011) in the Focus on Quantum Simulation
Tomographic reconstruction of the Wigner function on the Bloch sphere
Roman Schmied and Philipp Treutlein
New Journal of Physics 13:065019 (2011) in the Focus on Modern Frontiers of Matter Wave Optics and Interferometry
Newtonian photorealistic ray tracing of grating cloaks and correlation-function-based cloaking-quality assessment
Jad C. Halimeh, Roman Schmied, and Martin Wegener
Optics Express 19,7:6078 (2011)
Conformal carpet and grating cloaks
Roman Schmied, Jad C. Halimeh, and Martin Wegener
Optics Express 18,23:24361 (2010)
Optimized magnetic lattices for ultracold atomic ensembles
Roman Schmied, Dietrich Leibfried, Robert J. C. Spreeuw, and Shannon Whitlock
New Journal of Physics 12:103029 (2010)
(see Downloads)
Modified spin-wave theory with ordering vector optimization: frustrated bosons on the spatially anisotropic triangular lattice
Philipp Hauke, Tommaso Roscilde, Valentin Murg, J. Ignacio Cirac, and Roman Schmied
New Journal of Physics 12:053036 (2010)
Electrostatics of gapped and finite surface electrodes
Roman Schmied
New Journal of Physics 12:023038 (2010)
(see Downloads)
(HCN)m–Mn (M=K,Ca,Sr): Vibrational Excitation Induced Solvation and Desolvation of Dopants in and on Helium Nanodroplets
Gary E. Douberly, Paul L. Stiles, Roger E. Miller, Roman Schmied, and Kevin K. Lehmann
Journal of Physical Chemistry A 114:3391 (2010)
Optimal Surface-Electrode Trap Lattices for Quantum Simulation with Trapped Ions
Roman Schmied, Janus H. Wesenberg, and Dietrich Leibfried
Physical Review Letters 102:233002 (2009)
(see Downloads)
Quantum phases of trapped ions in an optical lattice
Roman Schmied, Tommaso Roscilde, Valentin Murg, Diego Porras, and J. Ignacio Cirac
New Journal of Physics 10:045017 (2008)
Near-infrared spectroscopy of ethylene and ethylene dimer in superfluid helium droplets
Iris Scheele, André Conjusteau, Carlo Callegari, Roman Schmied, Kevin K. Lehmann, and Giacinto Scoles
Journal of Chemical Physics 122:104307 (2005)
UV spectra of benzene isotopomers and dimers in helium nanodroplets
Roman Schmied, Pierre Çarçabal, Adriaan M. Dokter, Vincent P. A. Lonij, Kevin K. Lehmann, and Giacinto Scoles
Journal of Chemical Physics 121,6:2701 (2004)
Computer-generated character tables and nuclear spin statistical weights: application to benzene dimer and methane dimer
Roman Schmied and Kevin K. Lehmann
Journal of Molecular Spectroscopy 226:201 (2004)
(see Downloads)
Helium nanodroplet isolation spectroscopy of perylene and its complexes with oxygen
Pierre Çarçabal, Roman Schmied, Kevin K. Lehmann, and Giacinto Scoles
Journal of Chemical Physics 120,14:6792 (2004)
Energetics and possible formation and decay mechanisms of vortices in helium nanodroplets
Kevin K. Lehmann and Roman Schmied
Physical Review B 68:224520 (2003)
The dipole moment of HOCl in vOH=4
Andrea Callegari, Patrice Theulé, Roman Schmied, Thomas R. Rizzo, and John S. Muenter
Journal of Molecular Spectroscopy 221:116 (2003)
Helium nanodroplet isolation rovibrational spectroscopy: Methods and recent results
Carlo Callegari, Kevin K. Lehmann, Roman Schmied, and Giacinto Scoles
Journal of Chemical Physics 115,22:10090 (2001)
Eigenstate-resolved unimolecular dissociation dynamics of HOCl at vOH=7 and 8
Andrea Callegari, Roman Schmied, Patrice Theulé, Julia Rebstein, and Thomas R. Rizzo
Physical Chemistry Chemical Physics 3:2245 (2001)
 

PD Dr. Roman Schmied

Senior scientist