Micrometre-scale refrigerators

JT Muhonen, M Meschke… - Reports on Progress in …, 2012 - iopscience.iop.org
A superconductor with a gap in the density of states or a quantum dot with discrete energy
levels is a central building block in realizing an electronic on-chip cooler. They can work as …

Using materials for quasiparticle engineering

G Catelani, JP Pekola - Materials for Quantum Technology, 2022 - iopscience.iop.org
The fundamental excitations in superconductors—Bogoliubov quasiparticles—can be either
a resource or a liability in superconducting devices: they are what enables photon detection …

Quantum-limited heat conduction over macroscopic distances

M Partanen, KY Tan, J Govenius, RE Lake, MK Mäkelä… - Nature physics, 2016 - nature.com
The emerging quantum technological apparatuses,, such as the quantum computer,,,, call
for extreme performance in thermal engineering. Cold distant heat sinks are needed for the …

The superconducting quasiparticle-amplifying transmon: a qubit-based sensor for meV scale phonons and single THz photons

CW Fink, CP Salemi, BA Young, DI Schuster… - arXiv preprint arXiv …, 2023 - arxiv.org
With great interest from the quantum computing community, an immense amount of R&D
effort has been invested into improving superconducting qubits. The technologies …

Photon-noise-limited cold-electron bolometer based on strong electron self-cooling for high-performance cosmology missions

LS Kuzmin, AL Pankratov, AV Gordeeva… - Communications …, 2019 - nature.com
Bolometers for balloon and space missions have seen extensive development because of
their capacity to test primordial conditions of the Universe. The major improvements consist …

Heat Dissipation Mechanisms in Hybrid Superconductor–Semiconductor Devices Revealed by Joule Spectroscopy

Á Ibabe, GO Steffensen, I Casal, M Gómez, T Kanne… - Nano Letters, 2024 - ACS Publications
Understanding heating and cooling mechanisms in mesoscopic superconductor–
semiconductor devices is crucial for their application in quantum technologies. Owing to …

Normal-metal quasiparticle traps for superconducting qubits

RP Riwar, A Hosseinkhani, LD Burkhart, YY Gao… - Physical Review B, 2016 - APS
The presence of quasiparticles in superconducting qubits emerges as an intrinsic constraint
on their coherence. While it is difficult to prevent the generation of quasiparticles, keeping …

Excitation of superconducting qubits from hot nonequilibrium quasiparticles

J Wenner, Y Yin, E Lucero, R Barends, Y Chen… - Physical review …, 2013 - APS
Superconducting qubits probe environmental defects such as nonequilibrium quasiparticles,
an<? format?> important source of decoherence. We show that “hot” nonequilibrium …

Electronic coolers based on superconducting tunnel junctions: fundamentals and applications

H Courtois, FWJ Hekking, HQ Nguyen… - Journal of Low …, 2014 - Springer
Thermo-electric transport at the nano-scale is a rapidly developing topic, in particular in
superconductor-based hybrid devices. In this review paper, we first discuss the fundamental …

Thermodynamic cycles in Josephson junctions

F Vischi, M Carrega, P Virtanen, E Strambini… - Scientific Reports, 2019 - nature.com
A superconductor/normal metal/superconductor Josephson junction is a coherent electron
system where the thermodynamic entropy depends on temperature and difference of phase …