Zobrazeno 1 - 10
of 30
pro vyhledávání: '"J P Pekola"'
Publikováno v:
New Journal of Physics, Vol 23, Iss 3, p 033034 (2021)
We study the thermodynamic performance of a finite-time non-regenerative quantum Stirling-like cycle used as a heat engine. We consider specifically the case in which the working substance (WS) is a two-level system (TLS). The Stirling cycle is made
Externí odkaz:
https://doaj.org/article/2d8ff2660ef7411eb3306b5abf657fa3
Publikováno v:
New Journal of Physics, Vol 19, Iss 12, p 123026 (2017)
We suggest a microscopic model describing the nonlocal ac response of a pair of Majorana states in fermionic superfluids beyond the tunneling approximation. The time-dependent perturbations of quasiparticle transport are shown to excite finite period
Externí odkaz:
https://doaj.org/article/c7bd3c079e634ffd980f8aade85d28d2
Publikováno v:
New Journal of Physics, Vol 15, Iss 8, p 085013 (2013)
The performance of hybrid superconducting electronic coolers is usually limited by the accumulation of hot quasi-particles in their superconducting leads. This issue is all the more stringent in large-scale and high-power devices, as required by the
Externí odkaz:
https://doaj.org/article/c4334b54e29d4a988b2fd7b95f329a05
Publikováno v:
New Journal of Physics, Vol 15, Iss 11, p 115006 (2013)
We propose a calorimetric measurement of work in a quantum system. As a physical realization, we consider a superconducting two-level system, a Cooper-pair box, driven by a gate voltage past an avoided level crossing at charge degeneracy. We demonstr
Externí odkaz:
https://doaj.org/article/a6e5d710b19d49a4a82f874cca426375
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
Abstract We demonstrate simultaneous measurements of DC transport properties and flux noise of a hybrid superconducting magnetometer based on the proximity effect (superconducting quantum interference proximity transistor, SQUIPT). The noise is probe
Externí odkaz:
https://doaj.org/article/4690751532e04c0fb6e343efce4c85ad
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-7 (2016)
Excessive excitation induced by overheating may deteriorate the resistance-free operation of superconductor-based devices. Here, Taupin et al. propose an effective control of excess quasiparticles and their spatial distribution in a mesoscopic superc
Externí odkaz:
https://doaj.org/article/cf18a8247d314636ae86bb0c4662fccf
Autor:
E. Gümüş, D. Majidi, D. Nikolić, P. Raif, B. Karimi, J. T. Peltonen, E. Scheer, J. P. Pekola, H. Courtois, W. Belzig, C. B. Winkelmann
Publikováno v:
Nature Physics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df75a8740badffb432b94a5c1bca1433
https://doi.org/10.1038/s41567-022-01844-0
https://doi.org/10.1038/s41567-022-01844-0
Autor:
E. T. Mannila, P. Samuelsson, S. Simbierowicz, J. T. Peltonen, V. Vesterinen, L. Grönberg, J. Hassel, V. F. Maisi, J. P. Pekola
Publikováno v:
Mannila, E T, Samuelsson, P, Simbierowicz, S, Peltonen, J T, Vesterinen, V, Grönberg, L, Hassel, J, Maisi, V F & Pekola, J P 2021, ' A superconductor free of quasiparticles for seconds ', Nature Physics, vol. 18, no. 2, pp. 145-148 . https://doi.org/10.1038/s41567-021-01433-7
Superconducting devices, based on the Cooper pairing of electrons, play an important role in existing and emergent technologies, ranging from radiation detectors to quantum computers. Their performance is limited by spurious quasiparticle excitations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0cc0352f37910cf3c391d08a9cc1d3e
https://cris.vtt.fi/en/publications/bf744c92-78a8-4434-a8c6-3afdb9d4b863
https://cris.vtt.fi/en/publications/bf744c92-78a8-4434-a8c6-3afdb9d4b863
Autor:
G Catelani, J P Pekola
Publikováno v:
Materials for quantum technology 2(1), 013001-(2022). doi:10.1088/2633-4356/ac4a75
The fundamental excitations in superconductors - Bogoliubov quasiparticles - can be either a resource or a liability in superconducting devices: they are what enables photon detection in microwave kinetic inductance detectors, but they are a source o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a66246d840c6fada5e89011c3d51019
http://arxiv.org/abs/2107.09695
http://arxiv.org/abs/2107.09695
Autor:
J. P. Pekola, B. Karimi
Publikováno v:
Physical Review B. 95
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::070e2ec9d12f674fe2313d826bf8db3a
https://doi.org/10.1103/physrevb.95.019903
https://doi.org/10.1103/physrevb.95.019903