Zobrazeno 1 - 10
of 624
pro vyhledávání: '"Pekola, J."'
Motivated by recent experiments (Subero et. al. Nature Comm. $\bf{14}$, 7924 (2023)) we analyze photonic heat transport through a Josephson junction in a dissipative environment. For this purpose we derive the general expressions for the heat current
Externí odkaz:
http://arxiv.org/abs/2403.13526
Autor:
Gümüş, E., Majidi, D., Nikolić, D., Raif, P., Karimi, B., Peltonen, J. T., Scheer, E., Pekola, J. P., Courtois, H., Belzig, W., Winkelmann, C. B.
Publikováno v:
Nature Phys. 19, 196 (2023)
In a Josephson junction, which is the central element in superconducting quantum technology, irreversibility arises from abrupt slips of the gauge-invariant quantum phase difference across the contact. A quantum phase slip (QPS) is often visualized a
Externí odkaz:
http://arxiv.org/abs/2202.08726
Autor:
Nguyen, H. Q., Sabonis, D., Razmadze, D., Mannila, E. T., Maisi, V. F., van Zanten, D. M. T., O'Farrell, E. C. T., Krogstrup, P., Kuemmeth, F., Pekola, J. P., Marcus, C. M.
Publikováno v:
Phys. Rev. B 108, L041302 (2023)
The performance of superconducting devices is often degraded by the uncontrolled appearance and disappearance of quasiparticles, a process known as poisoning. We demonstrate electrostatic control of quasiparticle poisoning in the form of single-charg
Externí odkaz:
http://arxiv.org/abs/2202.05970
Publikováno v:
Phys. Rev. Lett. 127, 147001 (2021)
We propose and experimentally demonstrate a self-calibrating detector of Cooper pair depairing in a superconductor based on a mesoscopic superconducting island coupled to normal metal leads. On average, exactly one electron passes through the device
Externí odkaz:
http://arxiv.org/abs/2102.02254
Autor:
Mannila, E. T., Samuelsson, P., Simbierowicz, S., Peltonen, J. T., Vesterinen, V., Grönberg, L., Hassel, J., Maisi, V. F., Pekola, J. P.
Publikováno v:
Nature Physics 18, 145-148 (2022)
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:
http://arxiv.org/abs/2102.00484
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
Autor:
Tikhonov, E. S., Denisov, A. O., Piatrusha, S. U., Khrapach, I. N., Pekola, J. P., Karimi, B., Jabdaraghi, R. N., Khrapai, V. S.
Publikováno v:
Phys. Rev. B 102, 085417 (2020)
Shot noise measurements are widely used for the characterization of nonequilibrium configurations in electronic conductors. The recently introduced quantum tomography approach was implemented for the studies of electronic wavefunctions of few-electro
Externí odkaz:
http://arxiv.org/abs/2001.07563
The performance of low temperature detectors utilizing thermal effects is determined by their energy relaxation properties. Usually, heat transport experiments in mesoscopic structures are carried out in the steady-state, where temperature gradients
Externí odkaz:
http://arxiv.org/abs/1910.09448
Crossover between electron-phonon and boundary resistance limited thermal relaxation in copper films
Publikováno v:
Phys. Rev. Applied 12, 024051 (2019)
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
Externí odkaz:
http://arxiv.org/abs/1903.10848
Autor:
Samokhvalov, A. V., Shereshevskii, I. A., Vdovicheva, N. K., Taupin, M., Khaymovich, I. M., Pekola, J. P., Mel'nikov, A. S.
Publikováno v:
Phys. Rev. B 99, 134512 (2019)
The electronic structure of the giant vortex states in a mesoscopic superconducting disk is studied in a dirty limit using the Usadel approach. The local density of states profiles are shown to be strongly affected by the effect of quasiparticle (QP)
Externí odkaz:
http://arxiv.org/abs/1901.01263