Work

Many-body quantum dynamics of spin-orbit coupled Andreev states in a Zeeman field

Year: 2024

Type: article

Abstract: We provide a theoretical framework to describe the quantum many-body dynamics of Andreev states in Josephson junctions with spin-orbit coupling and a magnetic Zeeman field. In such cases, employing a doubled Nambu spinor description is technically advantageous but one then has to be careful to avoid double-counting problems. By deriving the Lindblad master equation in the so-called excitation picture, we show that a physically consistent many-body theory free from double-counting problems follows. We apply our formalism to a study of dynamical parity stabilization of the Andreev sector at intermediate times after an initial microwave pulse, in particular addressing the combined effects of spin-orbit coupling and Zeeman field.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.109.214505

Authors: Kateryna Zatsarynna, Andrea Nava, Alex Zazunov, Reinhold Egger

Institution: Heinrich Heine University Düsseldorf

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Deutsche Forschungsgemeinschaft

Awards: G3356704239, TRR 183: Verschränkte Materiezustände, G7399398987, EXC 2004: Materie und Licht für Quanteninformation (ML4Q)