"Taming Electrons with Surface Waves: Acoustic and Magnetic Traps for Electrons in Semiconductors"

Who: Johannes Knoerzer, Max-Planck Institute for Quantum Optics, Garching, Germany

Place: Donostia International Physics Center

Date: Thursday, 22 November 2018, 12:00

We propose and analyze acoustic and magnetic lattices for electrons in semiconductors [1,2] as a novel platform for quantum simulation [3]. First, we provide a general theoretical framework and show that thermally stable traps for semiconductor quasi-particles can be generated either by (i) exposing electrons to time-dependent electric potentials generated with surface acoustic waves (SAWs) in piezoelectric substrates [4,5,6] or (ii) magnetically driving the particle?s internal spin transition. In both scenarios, we highlight striking similarities with atomic systems, i.e., optical lattices for cold atoms [7] and trapped ions [8], respectively. Following the investigation of thermally stable trapping, we further discuss in detail periodic arrays of such traps, i.e. acoustic and magnetic lattices, as a platform for quantum simulation of exotic Hubbard models, with lattice parameters that can be tuned in real time. Our scheme can be readily implemented in state-of-the-art experiments. Implementation and read-out schemes are discussed.

[1] M. J. A. Schuetz, J. Knörzer, et al., Phys. Rev. X 7, 041019 (2017)
[2] J. Knörzer, M. J. A. Schuetz, et al., Phys. Rev. B 97, 235451 (2018)
[3] J. I. Cirac, P. Zoller, Nat. Phys. 8, 264 (2012)
[4] S. Hermelin et al., Nature 477, 435 (2011)
[5] R. P. G. McNeil et al., Nature 477, 439 (2011)
[6] T. Byrnes et al., Phys. Rev. Lett. 90, 187601 (2003)
[7] I. Bloch, J. Dalibard, W. Zwerger, Rev. Mod. Phys. 80, 885 (2008)
[8] D. Leibfried et al., Rev. Mod. Phys. 75, 281 (2003) 

Host: Geza Giedke

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