Work

Josephson effect in a junction coupled to an electron reservoir

Year: 2024

Type: article

Abstract: We extend the scattering theory of the Josephson effect to include a coupling of the Josephson junction to a gapless electron reservoir in the normal state. By opening up the system with a quasiparticle escape rate 1/τ, the supercurrent carried at zero temperature by an Andreev level at energy εA is reduced by a factor (2/π)arctan(2εAτ/ℏ). We make contact with recent work on “non-Hermitian Josephson junctions,” by comparing this result to different proposed generalizations of the Josephson effect to non-Hermitian Hamiltonians.

Source: Applied Physics Letters

DOI: 10.1063/5.0215522

Author: C. W. J. Beenakker

Institution: Leiden University

Language: English

Topic: Quantum Mechanics and Non-Hermitian Physics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: European Commission, H2020 European Research Council

Awards: G434337789, G7302598116