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Quantum Simulation, Quantum Many Body Systems

Max Planck Institute of Quantum Optics

Hans-Kopferman-Str. 1

Room C2.27

85748 Garching

+49 89 32905 554

philipp.preiss[at]mpq.mpg.de

Research Website

We are experiencing an exciting moment in quantum science where deep theoretical concepts, cutting-edge technology, and cross-discipline teamwork are all coming together to enable experiments and devices that were inconcievable just a few years ago.“

Description

Main research focus: Quantum Simulation, Quantum Many Body Systems

Our group Atomic Quantum Matter pursues the experimental application of quantum information concepts to ultracold atomic systems. We use the tools of quantum gas microscopy, including optical tweezers, lattices, and single-particle resolved imaging, to realize many-body systems with single-particle control. Our focus is to develop new, faster ways of initializing optical lattice systems by assembling them from individual atoms. Such experiments will provide the experimental testbed for new ideas emerging at the interface between condensed matter physics and quantum information science.

sortedlattices © Philipp Preiss

Publications

Skyrmion ground states of rapidly rotating few-fermion systems

L. Palm, F. Grusdt, P. M. Preiss

New Journal of Physics 22 (8), 83037 (2020).

Show Abstract

We show that ultracold fermions in an artificial magnetic field open up a new window to the physics of the spinful fractional quantum Hall (FQH) effect. We numerically study the lowest energy states of strongly interacting few-fermion systems in rapidly rotating optical microtraps. We find that skyrmion-like ground states with locally ferromagnetic, long-range spin textures emerge. To realize such states experimentally, rotating microtraps with higher-order angular momentum components may be used to prepare fermionic particles in a lowest Landau level. We find parameter regimes in which skyrmion-like ground states should be accessible in current experiments and demonstrate an adiabatic pathway for their preparation in a rapidly rotating harmonic trap. The addition of long range interactions will lead to an even richer interplay between spin textures and FQH physics.

DOI: 10.1088/1367-2630/aba30e

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