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TT: Fachverband Tiefe Temperaturen

TT 10: Topology: Majorana Physics I

TT 10.1: Talk

Monday, March 18, 2024, 15:00–15:15, H 2053

Characterization of Majorana bound states with Entanglement measures — •Vimalesh Vimal¹ and Jorge Cayao² — ¹Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden — ²Department of Physics and Astronomy, Uppsala University, Box 516, S-751 20 Uppsala, Sweden

We consider a pair of Majorana bound states coupled to quantum dots and investigate the dynamics of quantum correlations quantifying their entanglement. In particular, for an initial state with maximally entangled quantum dots, a maximally entangled state between Majorana states and one of the quantum dots can be created periodically in time which strongly dependent on the Majorana nonlocality. A similar result is also obtained for a separable initial state, but the dynamics then develop oscillations that have different local and global frequencies when Majorana states have finite energy. Therefore, the entanglement dynamics have the potential to identify the emergence of Majorana states and also show that topological systems can serve as a source of entanglement.

Keywords: Majorana bound states; Entanglement; Quantum correlations; Quantum dot; Topological systems