Hannover 2020 – wissenschaftliches Programm

Die DPG-Frühjahrstagung in Hannover musste abgesagt werden! Lesen Sie mehr ...

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 33: Quantum Information (Concepts and Methods) IV

Q 33.4: Vortrag

Mittwoch, 11. März 2020, 15:00–15:15, e001

Spin-Sensitive Readout of Two-Dimensional Wigner Crystals in Transition-Metal DichalcogenidesJohannes Knörzer1,2, Martin J. A. Schuetz3, •Géza Giedke4,5, Richard Schmidt1,2, Dominik S. Wild3, Kristiaan De Greve3, Mikhail D. Lukin3, and J. Ignacio Cirac1,21Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany — 2Munich Center for Quantum Science and Technology (MCQST), 80799 München, Germany — 3Physics Department, Harvard University, Cambridge, MA 02318, USA — 4Donostia International Physics Center, 20018 San Sebastián, Spain — 5Ikerbasque Foundation for Science, 48013 Bilbao, Spain

Wigner crystals are prime candidates for the realization of regular electron lattices with minimal requirements on external control and a potential basis for quantum registers or simulators. However, technical challenges have prevented their detailed experimental investigation to date. Here, we investigate two-dimensional electron lattices based on self-assembled Wigner crystals in transition-metal dichalcogenides (TMDs), which provide favorable conditions for the formation of Wigner crystals. We show that they allow for minimally invasive, all-optical detection schemes of charge ordering and total spin. For suitably chosen incident light, we predict a strong dependence of the transmitted and reflected signals on the underlying lattice periodicity, thus revealing the charge order inherent in Wigner crystals. At the same time, the selection rules in TMDs provide direct access to the spin degree of freedom via Faraday rotation measurements. Prospects for the quantum simulation of spin-systems are discussed.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2020 > Hannover