Rostock 2019 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 42: Poster: Quantum Optics and Photonics II
Q 42.30: Poster
Mittwoch, 13. März 2019, 16:15–18:15, S Atrium Informatik
Quantum network transfer and storage with compact localized states — Malte Röntgen1, •Christian Morfonios1, Ioannis Brouzos2, Fotios Diakonos2, and Peter Schmelcher1,3 — 1Centre for Optical Quantum Technologies, University of Hamburg, 22761 Hamburg, Germany — 2Department of Physics, University of Athens, 15771 Athens, Greece — 3Centre for Ultrafast Imaging, University of Hamburg, 22761 Hamburg, Germany
We propose modulation protocols designed to generate, store and transfer compact localized states in a quantum network. Induced by parameter tuning or local reflection symmetries, such states vanish outside selected domains of the complete system and are therefore ideal for information storage. Their creation and transfer is here achieved either via amplitude phase flips or via optimal temporal control of inter-site couplings. We apply the concept to a decorated, locally symmetric Lieb lattice where one sublattice is dimerized, and also demonstrate it for more complex setups. The approach allows for a flexible storage and transfer of states along independent paths in lattices supporting flat energetic bands. The generic network and protocols proposed can be utilized in various physical setups such as atomic or molecular spin lattices, photonic waveguide arrays, and acoustic setups. [arXiv:1811.02950]