Zobrazeno 1 - 10
of 354
pro vyhledávání: '"PRUNNILA, M."'
Circuit-based quantum devices rely on keeping electrons at millikelvin temperatures. Improved coherence and sensitivity as well as discovering new physical phenomena motivate pursuing ever lower electron temperatures, accessible using on-chip cooling
Externí odkaz:
http://arxiv.org/abs/2408.11420
Autor:
Hätinen, J., Ronzani, A., Loreto, R. P., Mykkänen, E., Kemppinen, A., Viisanen, K., Rantanen, T., Geisor, J., Lehtinen, J., Ribeiro, M., Kaikkonen, J-P., Prakash, O., Vesterinen, V., Förbom, W., Mannila, E. T., Kervinen, M., Govenius, J., Prunnila, M.
Replacing the bulky cryo-liquid based cooling stages of cryo-enabled instruments by chip scale refrigeration is envisioned to disruptively reduce the system size similarly as microprocessors did for computers. Electronic refrigerators based on superc
Externí odkaz:
http://arxiv.org/abs/2403.08655
Autor:
Yam, W. K., Renger, M., Gandorfer, S., Fesquet, F., Handschuh, M., Honasoge, K. E., Kronowetter, F., Nojiri, Y., Partanen, M., Pfeiffer, M., van der Vliet, H., Matthews, A. J., Govenius, J., Jabdaraghi, R. N., Prunnila, M., Marx, A., Deppe, F., Gross, R., Fedorov, K. G.
Scalable quantum information processing with superconducting circuits is expected to advance from individual processors located in single dilution refrigerators to more powerful distributed quantum computing systems. The realization of hardware platf
Externí odkaz:
http://arxiv.org/abs/2308.12398
Autor:
Autti, S., Bettsworth, F. C., Grigoras, K., Gunnarsson, D., Haley, R. P., Jones, A. T., Pashkin, Yu. A., Prance, J. R., Prunnila, M., Thompson, M. D., Zmeev, D. E.
On-chip demagnetization refrigeration has recently emerged as a powerful tool for reaching microkelvin electron temperatures in nanoscale structures. The relative importance of cooling on-chip and off-chip components and the thermal subsystem dynamic
Externí odkaz:
http://arxiv.org/abs/2209.07099
Autor:
Mykkänen, E., Lehtinen, J. S., Ronzani, A., Kemppinen, A., Alkurdi, A., Chapuis, P. -O., Prunnila, M.
Publikováno v:
IEEE International Electron Devices Meeting (IEDM), 2020, pp. 25.8.1-25.8.4
Refrigeration is an important enabler for quantum technology. The very low energy of the fundamental excitations typically utilized in quantum technology devices and systems requires temperature well below 1 K. Expensive cryostats are utilized in rea
Externí odkaz:
http://arxiv.org/abs/2209.07275
Autor:
Grigoras, K., Yurttagül, N., Kaikkonen, J. -P., Mannila, E. T., Eskelinen, P., Lozano, D. P., Li, H. -X., Rommel, M., Shiri, D., Tiencken, N., Simbierowicz, S., Ronzani, A., Hätinen, J., Datta, D., Vesterinen, V., Grönberg, L., Biznárová, J., Roudsari, A. Fadavi, Kosen, S., Osman, A., Prunnila, M., Hassel, J., Bylander, J., Govenius, J.
Publikováno v:
IEEE Transactions on Quantum Engineering, vol. 3, pp. 1-10, 2022, Art no. 5100310
We fabricate and characterize superconducting through-silicon vias and electrodes suitable for superconducting quantum processors. We measure internal quality factors of a million for test resonators excited at single-photon levels, on chips with sup
Externí odkaz:
http://arxiv.org/abs/2201.10425
Autor:
Hahtela, O. M., Kemppinen, A., Lehtinen, J., Manninen, A. J., Mykkänen, E., Prunnila, M., Yurttagül, N., Blanchet, F., Gramich, M., Karimi, B., Mannila, E. T., Muhojoki, J., Peltonen, J. T., Pekola, J. P.
The Coulomb Blockade Thermometer (CBT) is a primary thermometer for cryogenic temperatures, with demonstrated operation from below 1 mK up to 60 K. Its performance as a primary thermometer has been verified at temperatures from 20 mK to 200 mK at unc
Externí odkaz:
http://arxiv.org/abs/2101.03932
Publikováno v:
Appl. Phys. Lett. 119, 052603 (2021)
We demonstrate highly transparent silicon-vanadium and silicon-aluminum tunnel junctions with relatively low sub-gap leakage current and discuss how a trade-off typically encountered between transparency and leakage affects their refrigeration perfor
Externí odkaz:
http://arxiv.org/abs/2009.14166
Autor:
Kokkoniemi, R., Govenius, J., Vesterinen, V., Lake, R. E., Gunyho, A. M., Tan, K. Y., Simbierowicz, S., Grönberg, L., Lehtinen, J., Prunnila, M., Hassel, J., Saira, O. -P., Möttönen, M.
Since the introduction of bolometers more than a century ago, they have been applied in a broad spectrum of contexts ranging from security and the construction industry to particle physics and astronomy. However, emerging technologies and missions ca
Externí odkaz:
http://arxiv.org/abs/1806.09397
We have fabricated disordered superconducting nanowires of molybdenium silicide. A molybdenium nanowire is first deposited on top of silicon, and the alloy is formed by rapid thermal annealing. The method allows tuning of the crystal growth to optimi
Externí odkaz:
http://arxiv.org/abs/1708.06629