121 citations · 146 across the 8 of their papers we have counts for
8 papers
Tantalum as a base material for superconducting integrated circuits
Evgeniy V. Zikiy, Nikita S. Smirnov, Stanislav A. Kotenkov +9
The performance of superconducting integrated circuits for quantum applications is fundamentally limited by material-related losses. Tantalum, as an emerging material for next-gene…
Investigation of tantalum films growth for coplanar resonators with internal quality factors above ten million
E. V. Zikiy, N. S. Smirnov, E. A. Krivko +13
Alpha-tantalum on silicon is a promising platform for high-coherence superconducting quantum circuits. However, the growth mechanism of alpha-tantalum on silicon remains poorly und…
Mutual control of critical temperature, residual resistance ratio, stress, and roughness for sputtered Nb films
E. V. Zikiy, I. A. Stepanov, S. V. Bukatin +10
Superconducting single quantum logic integrated circuits traditionally exploit magnetron sputtered niobium thin films on silicon oxide substrates. The sputtering depends on multipl…
High-Q trenched aluminum coplanar resonators with an ultrasonic edge microcutting for superconducting quantum devices
E. V. Zikiy, A. I. Ivanov, N. S. Smirnov +7
Dielectric losses are one of the key factors limiting the coherence of superconducting qubits. The impact of materials and fabrication steps on dielectric losses can be evaluated u…
Coupler microwave-activated controlled phase gate on fluxonium qubits
Ilya A. Simakov, Grigoriy S. Mazhorin, Ilya N. Moskalenko +8
Tunable couplers have recently become one of the most powerful tools for implementing two-qubit gates between superconducting qubits. A tunable coupler typically includes a nonline…
Deep multilevel wet etching of fused silica glass microstructures in BOE solution
T. G. Konstantinova, M. M. Andronic, D. A. Baklykov +8
Fused silica glass is a material of choice for micromechanical, microfluidic, and optical devices due to its ultimate chemical resistance, optical, electrical, and mechanical perfo…
Improving Josephson junction reproducibility for superconducting quantum circuits: junction area fluctuation
A. A. Pishchimova, N. S. Smirnov, D. A. Ezenkova +6
Josephson superconducting qubits and parametric amplifiers are prominent examples of superconducting quantum circuits that have shown rapid progress in recent years. With the growi…
High fidelity two-qubit gates on fluxoniums using a tunable coupler
Ilya N. Moskalenko, Ilya A. Simakov, Nikolay N. Abramov +7
Superconducting fluxonium qubits provide a promising alternative to transmons on the path toward large-scale superconductor-based quantum computing due to their better coherence an…