6 papers · 1 filter
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…
Spin Environment of a Superconducting Qubit in High Magnetic Fields
S. Günzler, J. Beck, D. Rieger +9
Superconducting qubits equipped with quantum non-demolition readout and active feedback can be used as information engines to probe and manipulate microscopic degrees of freedom, w…
Observation of Perfect Absorption in Hyperfine Levels of Molecular Spins with Hermitian Subspaces
Claudio Bonizzoni, Daniele Lamberto, Samuel Napoli +7
We investigate Perfect Absorption (PA) of radiation, in which incoming energy is entirely dissipated, in a system consisting of molecular spin centers coherently coupled to a plana…
Granular Aluminum Parametric Amplifier for Low-Noise Measurements in Tesla Fields
Nicolas Zapata, Ivan Takmakov, Simon Günzler +8
Josephson junction parametric amplifiers have become essential tools for microwave quantum circuit readout with minimal added noise. Even after improving at an impressive rate in t…
Kinetic inductance coupling for circuit QED with spins
S. Günzler, D. Rieger, M. Spiecker +5
In contrast to the commonly used qubit resonator transverse coupling via the -degree of freedom, longitudinal coupling through presents a tantalizing alternative: i…
Observation of Josephson Harmonics in Tunnel Junctions
Dennis Willsch, Dennis Rieger, Patrick Winkel +27
Approaches to developing large-scale superconducting quantum processors must cope with the numerous microscopic degrees of freedom that are ubiquitous in solid-state devices. State…