6 papers
Giant nonlinearity of kinetic inductance in superconducting hybrid strip
D. Yu. Vodolazov, Yu. P. Korneeva, M. A. Dryazgov +6
We demonstrate giant nonlinearity of the kinetic inductance in a superconducting NbN/Al hybrid strip. In contrast to ordinary superconductors, where the maximum observed curr…
Native CCZ Gate with Fluxonium Qubits and a Microwave-Driven Coupler
Grigoriy S. Mazhorin, Tatyana A. Chudakova, Alena S. Kazmina +12
Native multi-qubit gates could reduce the overhead associated with decompositions into single- and two-qubit operations, but whether they can simultaneously provide high fidelity,…
4-Pixel NbN Hot-Electron Bolometer Integrated in a SiN Planar Optical Waveguide with On-Chip Fiber-Alignment Trench
N. A. Vovk, G. A. Matveev, M. A. Mumlyakov +7
In this work, we design and characterize a 4-pixel superconducting hot-electron bolometer (HEB) based on niobium nitride (NbN), integrated with individual planar silicon nitride (S…
Control of thin NbN film superconducting properties by ScN buffer layer
N. V. Porokhov, M. A. Dryazgov, A. R. Shevchenko +7
This work investigates the effect of a scandium nitride buffer layer on the superconducting properties of niobium nitride thin films. The use of a ScN buffer layer significantly im…
Practical way to increase nonlinearity of kinetic inductance of superconductor
Yu. P. Korneeva, M. A. Dryazgov, I. V. Trofimov +7
This work demonstrates that depositing a thin layer of Mo (5-15 nm) onto a 10 nm thick NbN strip leads to a significant increase in the nonlinearity of the kinetic inductance …
Technology of fabrication superconducting free-standing structures (FSS)
M. A. Tarkhov, A. M. Mumlyakov, M. V. Shibalov +5
In this study, a method for fabrication of superconducting microstructures that are partially or completely isolated from the substrate has been proposed. Two configurations of sus…