Berlin 2018 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 27: New Twists for Nanoquakes on a Chip - Emerging Applications of Surface Acoustic Waves in Condensed Matter Physics (Focussed Session): Session I
DS 27.3: Hauptvortrag
Donnerstag, 15. März 2018, 10:30–11:00, H 2032
Acoustic Traps and Lattices for Electrons in Semiconductors — Martin Schuetz1,2, •Johannes Knörzer1, Géza Giedke3,4, Lieven Vandersypen5, Mikhail Lukin2, and Ignacio Cirac1 — 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching, Germany — 2Physics Department, Harvard University, Cambridge, MA 02318, USA — 3Donostia International Physics Center, Paseo Manuel de Lardizabal 4, E-20018 San Sebastián, Spain — 4Ikerbasque Foundation for Science, Maria Diaz de Haro 3, E-48013 Bilbao, Spain — 5Kavli Institute of NanoScience, TU Delft, P.O. Box 5046, 2600 GA Delft, The Netherlands
We propose and analyze a solid-state platform based on surface acoustic waves (SAWs) for trapping, cooling and controlling (charged) particles, as well as the simulation of quantum many-body systems. We develop a general theoretical framework demonstrating the emergence of effective time-independent acoustic trapping potentials for particles in two- or one-dimensional structures. As our main example we discuss in detail the generation and applications of a stationary, but movable acoustic pseudo-lattice (AL) with lattice parameters that are reconfigurable in situ. We identify the relevant figures of merit, discuss potential experimental platforms for a faithful implementation of such an acoustic lattice, and provide estimates for typical system parameters. With a projected lattice spacing on the scale of about 100nm, this approach allows for relatively large energy scales in the realization of fermionic Hubbard models, with the ultimate prospect of entering the low-temperature, strong-interaction regime.