Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Olli-Pentti Saira"'
Autor:
Gregory Wimsatt, Olli-Pentti Saira, Alexander B. Boyd, Matthew H. Matheny, Siyuan Han, Michael L. Roukes, James P. Crutchfield
Publikováno v:
Physical Review Research, Vol 3, Iss 3, p 033115 (2021)
We experimentally demonstrate that highly structured distributions of work emerge during even the simple task of erasing a single bit. These are signatures of a refined suite of time-reversal symmetries in distinct functional classes of microscopic t
Externí odkaz:
https://doaj.org/article/23883bbf55aa487a8462526e3c383d80
Autor:
Olli-Pentti Saira, Matthew H. Matheny, Raj Katti, Warren Fon, Gregory Wimsatt, James P. Crutchfield, Siyuan Han, Michael L. Roukes
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 013249 (2020)
We implement a thermal-fluctuation-driven logical bit reset on a superconducting flux logic cell. We show that the logical state of the system can be continuously monitored with only a small perturbation to the thermally activated dynamics at 500 mK.
Externí odkaz:
https://doaj.org/article/87e4d85161334c3882f6d156ff76c103
Autor:
Klaara L Viisanen, Samu Suomela, Simone Gasparinetti, Olli-Pentti Saira, Joachim Ankerhold, Jukka P Pekola
Publikováno v:
New Journal of Physics, Vol 17, Iss 5, p 055014 (2015)
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 is envisioned. In a realistic scenario, some photons remain unrecorded
Externí odkaz:
https://doaj.org/article/0770279e020c4ceabae4b03fa2da2cea
YBCO-on-Kapton: Material for High-Density Quantum Computer Interconnects With Ultra-Low Thermal Loss
Publikováno v:
IEEE Transactions on Applied Superconductivity. 31:1-5
Development of practical quantum computers would require 1000's of qubits and equally large number of read-out, bias and drive lines. New materials that combine low passive loss and good RF properties are needed. Here we report performance of signal
Autor:
Raj Katti, Harpreet Singh Arora, Olli-Pentti Saira, Kenji Watanabe, Takashi Taniguchi, Keith C. Schwab, Michael Lee Roukes, Stevan Nadj-Perge
Due to its exceptional electronic and thermal properties, graphene is a key material for bolometry, calorimetry, and photon detection. However, despite graphene's relatively simple electronic structure, the physical processes responsible for the tran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c66da5a2138afbd836931de6a2097ca
Autor:
Michael L. Roukes, James P. Crutchfield, Raj Katti, Gregory W. Wimsatt, Siyuan Han, Olli-Pentti Saira, Matthew H. Matheny, Warren Fon
Publikováno v:
Physical Review Research, vol 2, iss 1
We implement a thermal-fluctuation driven logical bit reset on a superconducting flux logic cell. We show that the logical state of the system can be continuously monitored with only a small perturbation to the thermally activated dynamics at 500 mK.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c754f73bbe5ad959034673aaba8b10c
https://escholarship.org/uc/item/7d34x1p1
https://escholarship.org/uc/item/7d34x1p1
Weak electron-phonon interaction in metals at low temperatures forms the basis of operation for cryogenic hot-electron bolometers and calorimeters. Standard power laws, describing the heat flow in the majority of experiments, have been identified and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03b761ae4903372f8f689b0c67aabb31
https://aaltodoc.aalto.fi/handle/123456789/43057
https://aaltodoc.aalto.fi/handle/123456789/43057
Publikováno v:
Physical Review Applied
We observe a crossover from electron-phonon (ep) coupling limited energy relaxation to that governed by thermal boundary resistance (pp) in copper films at sub-kelvin temperatures. Our measurement yields a quantitative picture of heat currents, in te
Autor:
T. Faivre, K. L. Viisanen, Simone Gasparinetti, Jukka P. Pekola, Olli-Pentti Saira, Matthias Meschke, Marco Arzeo
Publikováno v:
PHYSICAL REVIEW APPLIED. 3(1):1-7
We demonstrate radiofrequency thermometry on a micrometer-sized metallic island below 100 mK. Our device is based on a normal metal-insulator-superconductor tunnel junction coupled to a resonator with transmission readout. In the first generation of
Autor:
Ilmo Räisänen, Juha Hassel, Leif Grönberg, Olli-Pentti Saira, Visa Vesterinen, Jukka P. Pekola, Mikko Möttönen
Publikováno v:
Vesterinen, V, Saira, O-P, Räisänen, I, Möttönen, M, Grönberg, L, Pekola, J & Hassel, J 2017, ' Lumped-element Josephson parametric amplifier at 650MHz for nano-calorimeter readout ', Superconductor Science and Technology, vol. 30, no. 8, 085001 . https://doi.org/10.1088/1361-6668/aa73ed
We design a sub-gigahertz Josephson parametric amplifier for the readout of nanoscale calorimeters which consist of normal-metal-superconductor heterostructures. We characterize the amplifier performance at two operating points, 605 and 655 MHz, corr