16 citations · 63 across the 7 of their papers we have counts for
7 papers
Rapid on-demand generation of thermal states in superconducting quantum circuits
Timm Fabian Mörstedt, Wallace Santos Teixeira, Arto Viitanen +13
We experimentally demonstrate the fast generation of thermal states of a transmon using a single-junction quantum-circuit refrigerator (QCR) as an in-situ-tunable environment. Thro…
Many-excitation removal of a transmon qubit using a single-junction quantum-circuit refrigerator and a two-tone microwave drive
Wallace Teixeira, Timm Mörstedt, Arto Viitanen +7
Achieving fast and precise initialization of qubits is a critical requirement for the successful operation of quantum computers. The combination of engineered environments with all…
Quantum-circuit refrigeration of a superconducting microwave resonator well below a single quantum
Arto Viitanen, Timm Mörstedt, Wallace S. Teixeira +4
We experimentally demonstrate a recently proposed single-junction quantum-circuit refrigerator (QCR) as an in-situ-tunable low-temperature environment for a superconducting 4.7-GHz…
Compact inductor-capacitor resonators at sub-gigahertz frequencies
Qi-Ming Chen, Priyank Singh, Rostislav Duda +8
Compact inductor-capacitor (LC) resonators, in contrast to coplanar waveguide (CPW) resonators, have a simple lumped-element circuit representation but usually call for sophisticat…
Exceptional-point-assisted entanglement, squeezing, and reset in a chain of three superconducting resonators
Wallace S. Teixeira, Vasilii Vadimov, Timm Mörstedt +2
The interplay between coherent and dissipative dynamics required in various control protocols of quantum technology has motivated studies of open-system degeneracies, referred to a…
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…