Quanten-Dynamik topologisch nichttrivialer Systeme mit Coulomb-Blockade-Effekten
Zusammenfassung der Projektergebnisse
To sum up, the joint Russian-German grant has shown successful and efficient collaboration of two international groups. All the main goals of the project have been achieved. There have been investigated several new phenomena including: Overheating effects in single-electron turnstiles and superconducting qubits under the drive and tunable methods of evacuating nonequilibrium quasiparticles by introducing Abrikosov vortices into the sample; Fundamental limitations on the operation times of the Majorana bound states which are the inevitable elements of fault-tolerant quantum computing devices; Realization of the phase battery (phi-Josephson junction with the spontaneous nontrivial phase difference) in superconducting hybrid systems; Geometric effects of the curvature in the most perspective platform of the fault-tolerant quantum computing, namely, in the semiconducting nanowires with strong spin-orbit coupling with the induced superconductivity in the external magnetic field; Generation of new dynamical (Higgs) modes of the superconducting order parameter in the hybrid systems under the quench; Investigation of the thermal fluctuation and measurement back action in superconducting hybrid single-electron systems under the steady-state or time-dependent drive conditions. All of the above effects are relevant for and may find their applications in such fields as metrology, precise single-electron pumping, electronic cooling, Josephson nanoelectronics, and quantum computing (including fault-tolerant computations). Some of the above phenomena has already realized experimentally (also in the close collaboration with the project members).
Projektbezogene Publikationen (Auswahl)
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“Interplay of the inverse proximity effect and magnetic field in out-ofequilibrium single-electron devices”, Phys. Rev. Applied 7, 054021 (2017)
Nakamura, Shuji; Pashkin, Yuri A.; Taupin, Mathieu; Maisi, Ville F.; Khaymovich, Ivan M.; Mel’nikov, Alexander S.; Peltonen, Joonas T.; Pekola, Jukka P.; Okazaki, Yuma; Kashiwaya, Satoshi; Kawabata, Shiro; Vasenko, Andrey S.; Tsai, Jaw-Shen & Kaneko, Nobu-Hisa
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“Nonlocality and dynamic response of Majorana states in fermionic superfluids”, New J. Phys. 19, 123026 (2017)
Khaymovich, I. M.; Pekola, J. P. & Melnikov, A. S.
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“Inverse proximity effect in semiconductor Majorana nanowires”, Beilstein J. Nanotechnol., 9, 1184 (2018)
Kopasov, Alexander A.; Khaymovich, Ivan M. & Mel'nikov, Alexander S.
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“Electronic structure of mesoscopic superconducting disc: Quasiparticle tunneling between the giant vortex core and the disk edge”, Phys. Rev. B 99, 134512 (2019)
Samokhvalov, A. V.; Shereshevskii, I. A.; Vdovicheva, N. K.; Taupin, M.; Khaymovich, I. M.; Pekola, J. P. & Mel'nikov, A. S.
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“Extreme reductions of entropy in an electronic double dot”, Phys. Rev. B 99, 115422 (2019)
Singh, Shilpi; Roldán, Édgar; Neri, Izaak; Khaymovich, Ivan M.; Golubev, Dmitry S.; Maisi, Ville F.; Peltonen, Joonas T.; Jülicher, Frank & Pekola, Jukka P.
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“Higgs modes in superconducting systems with proximity effect”, Phys. Rev. B 100, 104515 (2019)
Vadimov, V. L.; Khaymovich, I. M. & Mel'nikov, A. S.
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“Thermodynamics in Single-Electron Circuits and Superconducting Qubits”, Annu. Rev. Condens. Matter Phys. 10, 193–212 (2019)
Pekola, J.P. & Khaymovich, I.M.
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“Time-reversal symmetric Crooks and Gallavotti-Cohen fluctuation relations in driven classical Markovian systems”, J. Stat. Mech. (2019) 054006
Mandaiya, A. & Khaymovich, I. M.
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“Universal First-Passage-Time Distribution of Non-Gaussian Currents”, Phys. Rev. Lett. 122, 230602 (2019)
Singh, Shilpi; Menczel, Paul; Golubev, Dmitry S.; Khaymovich, Ivan M.; Peltonen, Joonas T.; Flindt, Christian; Saito, Keiji; Roldán, Édgar & Pekola, Jukka P.
