794 citations · 6.5k across the 136 of their papers we have counts for
7 papers · 1 filter
Single-junction quantum-circuit refrigerator
V. Vadimov, A. Viitanen, T. Mörstedt +2
We propose a quantum-circuit refrigerator (QCR) based on photon-assisted quasiparticle tunneling through a single normal-metal--insulator--superconductor (NIS) junction. In contras…
Recent Developments in Quantum-Circuit Refrigeration
Timm Fabian Mörstedt, Arto Viitanen, Vasilii Vadimov +7
We review the recent progress in direct active cooling of the quantum-electric degrees freedom in engineered circuits, or quantum-circuit refrigeration. In 2017, the invention of a…
Charge ambiguity and splitting of monopoles
Toni Annala, Mikko Möttönen
This paper is dedicated to studying various aspects of topological defects, appearing in mean-field theory treatments of physical systems such as ultracold atomic gases and gauge f…
Cryogenic sensor enabling broad-band and traceable power measurements
J. -P. Girard, R. E. Lake, W. Liu +4
Recently, great progress has been made in the field of ultrasensitive microwave detectors, reaching even the threshold for utilization in circuit quantum electrodynamics. However,…
Charge dynamics in quantum-circuit refrigeration: thermalization and microwave gain
Hao Hsu, Matti Silveri, Vasilii Sevriuk +2
Previous studies of photon-assisted tunneling through normal-metal-insulator-superconductor junctions have exhibited potential for providing a convenient tool to control the dissip…
Microwave response of a metallic superconductor subject to a high-voltage gate electrode
Giacomo Catto, Wei Liu, Suman Kundu +3
Processes that lead to the critical-current suppression and change of impedance of a superconductor under the application of an external voltage is an active area of research, espe…