Nature CommunicationsMixing of counterpropagating signals in a traveling-wave Josephson deviceM. PraquinA. GiraudoV. LienhardT. BouwakdhA. VanselowZ. LeghtasP. Campagne-Ibarcq2025-12-12Full textDOI https://doi.org/10.1038/s41467-025-66190-0