66 citations · 238 across the 9 of their papers we have counts for
9 papers
Native-oxide-passivated trilayer junctions for superconducting qubits
Pankaj Sethi, Om Prakash, Jukka-Pekka Kaikkonen +15
Superconducting qubits in today's quantum processing units are typically fabricated with angle-evaporated aluminum--aluminum-oxide--aluminum Josephson junctions. However, there is…
Efficient electronic cooling above 2 K by niobium-based superconducting tunnel junctions
J. Hätinen, A. Ronzani, R. P. Loreto +15
Replacing the bulky cryoliquid-based cooling stages of cryoenabled instruments by chip-scale refrigeration is envisioned to disruptively reduce the system size similar to microproc…
Wafer-scale CMOS-compatible graphene Josephson field-effect transistors
Andrey A. Generalov, Klaara L. Viisanen, Jorden Senior +5
Electrostatically tunable Josephson field-effect transistors (JoFETs) are one of the most desired building blocks of quantum electronics. JoFET applications range from parametric a…
Terahertz detection with graphene FETs: photothermoelectric and resistive self-mixing contributions to the detector response
Florian Ludwig, Andrey Generalov, Jakob Holstein +4
Field-effect transistors coupled to integrated antennas (TeraFETs) are photodetectors being actively developed for the THz frequency range ( 100 GHz - 10 THz). Among them, Gr…
Thermal resistance in superconducting flip-chip assemblies
Joel Hätinen, Emma Mykkänen, Klaara Viisanen +5
Cryogenic microsystems that utilize different 3D integration techniques are being actively developed, e.g., for the needs of quantum technologies. 3D integration can introduce oppo…
Propagating Quantum Microwaves: Towards Applications in Communication and Sensing
Mateo Casariego, Emmanuel Zambrini Cruzeiro, Stefano Gherardini +22
The field of propagating quantum microwaves has started to receive considerable attention in the past few years. Motivated at first by the lack of an efficient microwave-to-optical…
Anomalous electronic heat capacity of copper nanowires at sub-kelvin temperatures
K. L. Viisanen, J. P. Pekola
We have measured the electronic heat capacity of thin film nanowires of copper and silver at temperatures 0.1 - 0.3 K; the films were deposited by standard electron-beam evaporatio…
Dispersive thermometry with a Josephson junction coupled to a resonator
O. -P. Saira, M. Zgirski, K. L. Viisanen +2
We have embedded a small Josephson junction in a microwave resonator that allows simultaneous dc biasing and dispersive readout. Thermal fluctuations drive the junction into phase…
Incomplete measurement of work in a dissipative two level system
Klaara L. Viisanen, Samu Suomela, Simone Gasparinetti +3
We discuss work performed on a quantum two-level system coupled to multiple thermal baths. To evaluate the work, a measurement of photon exchange between the system and the baths i…