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

DIPC Seminars

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