472 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Friedrich Schiller University JenaDE67 papers
- B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of UkraineUA19 papers
- Novosibirsk State Technical UniversityRU18 papers
- Helmholtz Institute JenaDE16 papers
- Comenius University BratislavaSK15 papers
- Karlsruhe Institute of TechnologyDE11 papers
- Technische Universität DarmstadtDE10 papers
- Centre National de la Recherche ScientifiqueFR9 papers
- Czech Academy of Sciences, Institute of Scientific InstrumentsCZ9 papers
- National Yang Ming Chiao Tung UniversityTW9 papers
- University of MichiganUS9 papers
- Fraunhofer Institute for Applied Optics and Precision EngineeringDE8 papers
39 papers · 1 filter
Spatial homogeneity of superconducting order parameter in NbN films grown by atomic layer deposition
J. Lorenz, S. Linzen, M. Ziegler +5
Due to their high kinetic inductance, highly disordered superconducting thin films are a potential hardware for the realization of compact, low-noise elements in cryoelectronic app…
Feasibility of the Josephson voltage and current standards on a single chip
Rais S. Shaikhaidarov, Ilya Antonov, Kyung Ho Kim +4
The quantum Josephson voltage standard is well established across the metrology community for many years. It relies on the synchronisation of the flux tunneling in the S/I/S Joseps…
Quantized current steps due to the a.c. coherent quantum phase-slip effect
R. S. Shaikhaidarov, K. H. Kim, J. W. Dunstan +7
The AC Josephson effect predicted in 1962 and observed experimentally in 1963 as quantised voltage steps (the Shapiro steps) from photon assisted tunnelling of Cooper pairs is amon…
Single-photon detection with a Josephson junction coupled to a resonator
Dmitry S. Golubev, Evgeni V. Ilichev, Leonid S. Kuzmin
We use semiclassical formalism to optimize a microwave single photon detector based on switching events of a current biased Josephson junction coupled to a resonator. In order to d…
Measurements of microwave vortex response in dc magnetic fields in TlBaCaCuO films
Nicola Pompeo, Henrik Schneidewind, Enrico Silva
There is a renewed interest in superconductors for high-frequency applications, leading to a reconsideration of already known low- and high- materials. In this view, we p…
Thin film superconducting quantum interferometer with ultralow inductance
S. I. Bondarenko, A. V. Krevsun, E. V. Ilichev +3
A simple method has been developed for manufacturing a thin film superconducting quantum interferometer (SQI) with ultralow inductance (~10^-13 H). Current-voltage and voltage-fiel…
A new family of field-stable and highly sensitive SQUID current sensors based on sub-micrometer cross-type Josephson junctions
M. Schmelz, V. Zakosarenko, T. Schönau +5
We report on the development of a new family of SQUID current sensors based on sub-micron cross-type Josephson tunnel junctions. Their low total junction capacitance permit high us…
Nearly quantum limited nanoSQUIDs based on cross-type Nb/AlOx/Nb junctions
M. Schmelz, V. Zakosarenko, T. Schönau +4
We report on the development of nearly quantum limited SQUIDs with miniature pickup loop dimensions. The implemented high quality and low capacitance cross-type Nb/AlOx/Nb Josephso…
Detection of weak microwave fields with an underdamped Josephson junction
G. Oelsner, C. K. Andersen, M. Rehák +6
We have constructed a microwave detector based on the voltage switching of an underdamped Josephson junction, that is positioned at a current antinode of a λ/4 coplanar waveguide r…
Landau-Zener-Stückelberg-Majorana lasing in circuit QED
P. Neilinger, S. N. Shevchenko, J. Bogár +7
We demonstrate amplification (and attenuation) of a probe signal by a driven two-level quantum system in the Landau-Zener-Stückelberg-Majorana regime by means of an experiment, in…
Josephson systems based on ballistic point contacts between single-band and multi-band superconductors
Y. S. Yerin, A. S. Kiyko, A. N. Omelyanchouk +1
The Josephson effect in ballistic point contacts between single-band and multi-band superconductors was investigated. It was found that in the case of Josephson junctions formed by…
Breakdown of the escape dynamics in Josephson junctions
D. Massarotti, D. Stornaiuolo, P. Lucignano +7
We have identified anomalous behavior of the escape rate out of the zero-voltage state in Josephson junctions with a high critical current density Jc. For this study we have employ…
Dc SQUID based on a three-band superconductor with broken time-reversal symmetry
Y. S. Yerin, A. N. Omelyanchouk, E. Il'ichev
The behavior of a dc SQUID, based on a dirty point contacts between a single-band and three-band superconductor with broken time-reversal symmetry is investigated. Using earlier ob…
Two-photon lasing by a superconducting qubit
P. Neilinger, M. Rehák, M. Grajcar +3
We study the response of a magnetic-field-driven superconducting qubit strongly coupled to a superconducting coplanar waveguide resonator. We observed a strong amplification/dampin…
Investigation of all niobium Nano-SQUIDs based on sub-micrometer cross-type Josephson junctions
M. Schmelz, Y. Matsui, R. Stolz +6
We report on the development of highly sensitive SQUIDs featuring sub-micrometer loop dimensions. The integration of high quality and low capacitance SIS Nb/AlOx/Nb cross-type Jose…
Soliton scattering as a measurement tool for weak signals
Igor I. Soloviev, Nikolay V. Klenov, Andrey L. Pankratov +3
We have considered relativistic soliton dynamics governed by the sine-Gordon equation and affected by short spatial inhomogeneities of the driving force and thermal noise. Develope…
Broadband Sample Holder for Microwave Spectroscopy of Superconducting Qubits
A. S. Averkin, A. Karpov, K. Shulga +5
We present a practical design and implementation of a broadband sample holder suitable for microwave experiments with superconducting integrated circuits at millikelvin temperature…
Parametric amplification by coupled flux qubits
M. Rehak, P. Neilinger, M. Grajcar +4
We report the parametric amplification of a microwave signal in a Kerr medium formed from superconducting qubits. Two mutually coupled flux qubits, embedded in the current antinode…
Phase diagram of the resistive state of the narrow superconducting channel in the voltage-driven regime
Y. S. Yerin, V. N. Fenchenko, E. Il'ichev
Based on the numerical solution non-stationary Ginzburg-Landau equations, we investigated the evolution of the order parameter of superconducting channels with different lengths un…
Dressed-state amplification by a superconducting qubit
G. Oelsner, P. Macha, O. V. Astafiev +6
We demonstrate amplification of a microwave signal by a strongly driven two-level system in a coplanar waveguide resonator. The effect known from optics as dressed-state lasing is…
AC losses in high pressure synthesized MgB2 bulk rings measured by transformer method
V. Meerovich, V. Sokolovsky, T. Prikhna +2
The recently developed manufacturing technologies use high pressure and various doping additions to prepare bulk MgB2-based materials with a high critical current density measured…
Spectroscopy of a Qubit Array via a Single Transmission Line
M. Jerger, S. Poletto, P. Macha +4
Frequency-selective readout for superconducting qubits opens the way towards scaling qubit circuits up without increasing the number of measurement lines. Here we demonstrate the r…
Quantum behaviour of a flux qubit coupled to a resonator
A. N. Omelyanchouk, S. N. Shevchenko, Ya. S. Greenberg +2
We present a detailed theoretical analysis for a system of a superconducting flux qubit coupled to a transmission line resonator. The master equation, accounting incoherent process…
Higher borides and oxygen-enriched Mg-B-O inclusions as possible pinning centers in nanostructural magnesium diboride and the influence of additives on their formation
Tatiana Prikhna, Wolfgang Gawalek, Yaroslav Savchuk +21
The study of high pressure (2 GPa) synthesized MgB2-based materials allows us to conclude that higher borides (with near MgB12 stoichiometry) and oxygen-enriched Mg-B-O inclusions…