Work

Quantum Coulomb Drag Mediated by Cotunneling of Fluxons and Cooper Pairs

Year: 2025

Type: article

Abstract: We predict two novel quantum drag effects which can occur in macroscopically quantum coherent Josephson circuits. We demonstrate that biasing one resistively shunted Josephson junction by an external current one can induce a nonzero voltage drop across another such junction capacitively coupled to the first one. This quantum Coulomb drag is caused by cotunneling of magnetic flux quanta across both junctions which remain in the "superconducting" regime. Likewise, Cooper pair cotunneling across a pair of connected in series Josephson junctions in the "insulating" regime is responsible for another-dual-quantum Coulomb drag effect.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.134.086001

Authors: Andrew G. Semenov, Alex Latyshev, Andrei D. Zaikin

Institutions: P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Skolkovo Institute of Science and Technology, University of Geneva, National Research University Higher School of Economics

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W4407871975

FWCI: 0.934

Cites: 35

Cited by: 3

Related to: 10