SAMOP 2023 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 5: Quantum Optics: Open Quantum Systems
Q 5.3: Vortrag
Montag, 6. März 2023, 11:30–11:45, F342
Loss-induced topological protection — •Vinzenz Zimmermann1, Konrad Tschernig2, Kurt Busch1,3, and Armando Perez-Leija2 — 1Humboldt-Universität zu Berlin, Institut für Physik, AG Theoretische Optik & Photonik, Berlin, Germany — 2CREOL/College of Optics, University of Central Florida, Orlando, Florida, USA — 3Max-Born-Institut, Berlin, Germany
Arrays of evanescently coupled waveguides have become a veritable platform with especially promising prospects in topologically protected photonics [1]. By employing topologically protected states in specifically engineered arrays of waveguides, precise manipulations and robust propagation of classical and quantum states of light can be realized in entirely passive systems [2]. These topological effects have been shown to exist beyond Hermitian quantum-optical systems [3]. We explore the possibility to synthesize topologically protected steady states in dissipative waveguide arrays realizing non-Hermitian effective Hamiltonians. The Su-Schrieffer-Heeger (SSH) model implementing one dimensional dimer chains is studied in the framework of the tight binding model [4]. From an open quantum system perspective, the existence of zero modes in the spectrum of the corresponding Liouville superoperator is considered. The efficiency of the procedure regarding different initial excitations and system parameters is discussed.
[1] Laser Photonics Reviews 9, 363-384 (2015)
[2] Optica 3, 925 (2016)
[3] Phys. Rev. Research 2, 013387 (2020)
[4] Phys. Rev. Lett. 42, 1698 (1979)