Taming Electrons with Surface Waves: Acoustic and Magnetic Traps for Electrons in Semiconductors
DIPC Seminars
- Speaker
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Johannes Knoerzer, Max-Planck Institute for Quantum Optics, Garching, Germany
- When
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2018/11/22
13:00 - Place
- Donostia International Physics Center
- Add to calendar
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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