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Quantum Research Center (QRC)
The Center is focused on synergy of deep understanding of quantum materials and quantum devices design for emerging quantum technologies
Focus on Quantum Materials
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German-Ukraine Quantum Materials Lab
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Quantum Transport Lab
Design of smart quantum materials for quantum technologies: Electronic structure of novel superconductors and its relation with electronic properties. Symmetry of the superconducting order parametes. Search for new superconducting materials. Interface enhanced superconductivity.
Alexander Kordyuk
Mikhail Belogolovskii
Volodymyr Bezguba
Andriy Kuibarov
Pavlo Khanenko
Cooperation:
- IFW Dresden, Germany
- HZDR, Germany
- Max Planck Institute for Solid State Research, Germany
- Stockholm University, AlbaNova University Center, Sweden
Selected publications:
- Electronic band structure of optimal superconductors: from cuprates to ferropnictides and back again - A. A. Kordyuk, Low Temp. Phys. 44, 477 (2018).
- Phase-Sensitive Evidence for the Sign-Reversal s+- Symmetry of the Order Parameter in an Iron-Pnictide Superconductor Using Nb/Ba(1-x)NaxFe2As2 Josephson Junctions - A. A. Kalenyuk, A. Pagliero, E. A. Borodianskyi, A. A. Kordyuk, V. M. Krasnov, Phys. Rev. Lett. 120, 067001 (2018).
- Iron-based superconductors: Magnetism, superconductivity, and electronic structure (Review Article) - A. A. Kordyuk, Low Temp. Phys. 38, 888-899 (2012).
- An ARPES view on the high-Tc problem: Phonons vs. spin-fluctuations (Review Article) - A. A. Kordyuk, et al., Eur. Phys. J. Special Topics 188, 153 (2010).
- (pi-pi) electronic order in iron arsenide superconductors - V. B. Zabolotnyy, et al., Nature 457, 569 (2009).
Focus on Quantum Devices
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Superconducting Quantum Electronics Lab
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Digital Electronics Lab: FPGA Group
Josephson junctions for superconducting computing and superconducting qubits. Electrodynamics of superconductors and superconducting devices. Thing film sputtering techniques. Advanced FPGA based systems for physics experiments and remote workplace possibilities.
Andrey Shapovalov
Volodymyr Shnyrkov
Alexander Plyushchay
Alexey Kalenyuk
Alexander Suvorov
Cooperation:
- Prof. Paul Seidel, Institute for Solid State Physics, Friedrich-Schiller University, Jena, Germany
- Dr. Pascal Febvre, IMEP-LAHC, Savoie Universite Mont Blanc, Chambery, France
- Dr. Natascia De Leo, National Institute for Metrological Research, Turin, Italy
- Prof. John Ketterson, Department of Physics and Astronomy, Northwestern University, Evanston, USA
- Prof. Vladimir Krasnov, Department of Physics, Stockholm University, Sweden
Selected publications:
- Low-frequency measurement of the tunneling amplitude in a flux qubit - M. Grajcar, A. Izmalkov, E. Il'ichev, Th. Wagner, N. Oukhanski, U. Huebner, T. May, I. Zhilyaev, H.E. Hoenig, Ya.S. Greenberg, V.I. Shnyrkov, D. Born, W. Krech, H.-G. Meyer, A.M. van den Brink, M.H.S. Amin, Phys. Rev. B 69, 060501(R) (2004).
- Quantum superposition of three macroscopic states and superconducting qutrit detector -V.I. Shnyrkov, A.A. Soroka, O.G. Turutanov, Physical Review B 85, 224512 (2012).
- Universality of transport properties of ultrathin oxide films -V Lacquaniti, M Belogolovskii, C Cassiago, N De Leo, M Fretto, A Sosso, New Journal of Physics 14, 023025 (2012).
- Voltage-and temperature-controllable quantum-data processing across three-terminal superconducting nanodevices - M Belogolovskii, E Zhitlukhina, P Seidel, Applied Nanoscience, 1-9 (2019).
- On the possibility of faster detection of magnetic flux changes in a single-photon counter by RF SQUID with MoRe–Si (W)–MoRe junction -AP Shapovalov, VE Shaternik, OG Turutanov, VY Lyakhno, VI Shnyrkov, Low Temperature Physics 45, 776-784 (2019).
- Phase-Sensitive Evidence for the Sign-Reversal s+- Symmetry of the Order Parameter in an Iron-Pnictide Superconductor Using NbBa(1-x)NaxFe2As2 Josephson Junctions - A. A. Kalenyuk, A. Pagliero, E. A. Borodianskyi, A. A. Kordyuk, V. M. Krasnov, Phys. Rev. Lett. 120, 067001 (2018).
Focus on Quantum Communications
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Quantum Optics Group
Quantum communication in the turbulent atmosphere, quantum measurement theory, photon-number-resolving detection, quantum-classical correspondence, nonclassical correlations, nonuniversal quantum computing.
Andrii Semenov
Anna-Izabella Levbarg Nadiia Didukh
Ivan Yeremenko Mykyta Yurin Mariia Byelova Viktoriia Len
Cooperation:
- Institut für Physik, Universität Rostock, Germany
- Institut für Physik, Universität Paderborn, Germany
- Departamento de Física, Universidad de Guadalajara, Mexico
- Max-Planck-Institut für die Physik des Lichts, Germany
Selected publications:
- D. Vasylyev, A. A. Semenov, and W. Vogel, Atmospheric quantum channels with weak and strong turbulence, Phys. Rev. Lett. 117, 090501 (2016).
- D. Vasylyev, W. Vogel, and A. A. Semenov, Theory of atmospheric quantum channels based on the law of total probability, Phys. Rev. A 97, 063852 (2018).
- D. Vasylyev, A. A. Semenov, W. Vogel, K. Günthner, A. Thurn, Ö. Bayraktar, and Ch. Marquardt, Free-space quantum links under diverse weather conditions, Phys. Rev. A 96, 043856 (2017).
- M. Bohmann, A. A. Semenov, J. Sperling, and W. Vogel, Gaussian entanglement in the turbulent atmosphere, Phys. Rev. A 94, 010302(R) (2016).
- M. O. Gumberidze, A. A. Semenov, D. Vasylyev, and W. Vogel, Bell nonlocality in the turbulent atmosphere, Phys. Rev. A 94, 053801 (2016).
- O. P. Kovalenko, J. Sperling, W. Vogel, and A. A. Semenov, Geometrical picture of photocounting measurements, Phys. Rev. A 97, 023845 (2018).