activity
20242026
collaborators

6 papers

cond-mat.mes-hall2026

Diode Effect in Nonlinear High-Kinetic-Inductance Transmission Line Resonators

Niklas Gaiser, Ciprian Padurariu, Björn Kubala +2

High-kinetic-inductance (HKI) transmission lines provide a promising platform for compact nonlinear superconducting microwave devices. Existing theoretical descriptions are typical…

quant-ph2026

Stroboscopic detection of itinerant microwave photons

Hanna Zeller, Lukas Danner, Max Hofheinz +4

We present a novel scheme to detect itinerant microwave radiation at the single photon level. Using existing Josephson-photonics devices, where two microwave cavities are coupled b…

quant-ph2025

Optomechanical Cooling without Residual Heating

Surangana Sengupta, Björn Kubala, Joachim Ankerhold +1

Resolved-sideband cooling is a standard technique in cavity optomechanics enabling quantum control of mechanical motion, but its performance is ultimately limited by quantum backac…

quant-ph2025

Fast initialization of Bell states with Schrödinger cats in multi-mode systems

Miriam Resch, Ciprian Padurariu, Björn Kubala +1

Schrödinger cat states play an important role for applications in continuous variable quantum information technologies. As macroscopic superpositions they are inherently protected…

quant-ph2025

Quantum Coherence in Superconducting Vortex States

Ameya Nambisan, Simon Günzler, Dennis Rieger +13

Abrikosov vortices, where the superconducting gap is completely suppressed in the core, are dissipative, semi-classical entities that impact applications from high-current-density…

cond-mat.mes-hall2024

Quantum microwaves: stabilizing squeezed light by phase locking

Lukas Danner, Florian Höhe, Ciprian Padurariu +2

Bright sources of quantum microwave light are an important building block for various quantum technological applications. Josephson junctions coupled to microwave cavities are a pa…