121 citations · 209 across the 11 of their papers we have counts for
11 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…
High-fidelity two-qubit gates with transmon qubits using bipolar flux pulses and tunable couplers
Nikita S. Smirnov, Aleksei R. Matanin, Anton I. Ivanov +15
High-fidelity two-qubit gates are essential for scalable quantum computing. We present a scheme based on superconducting transmon qubits and a control pulse delivery protocol that…
An engineering guide to superconducting quantum circuit shielding
Elizaveta I. Malevannaya, Viktor I. Polozov, Anton I. Ivanov +10
In this review, we provide a practical guide on protection of superconducting quantum circuits from broadband electromagnetic and infrared-radiation noise by using cryogenic shield…
Wafer-scale uniformity improvement of Dolan-bridge Josephson junction by shadow evaporation bias correction
Daria A. Moskaleva, Nikita D. Korshakov, Dmitry O. Moskalev +7
One of the practical limitations of solid-state superconducting quantum processors technology is frequency crowding due to low qubits fabrication reproducibility. Josephson junctio…
Aluminum Josephson junction microstructure and electrical properties modification with thermal annealing
N. D. Korshakov, D. O. Moskalev, A. A. Soloviova +7
Superconducting qubits based on Al/AlOx/Al Josephson junction are one of the most promising candidates for the physical implementation of universal quantum computers. Due to scalab…
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…
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…
Cavity-QED of a quantum metamaterial with tunable disorder
Grigoriy S. Mazhorin, Ilya N. Moskalenko, Ilya S. Besedin +8
We explore experimentally a quantum metamaterial based on a superconducting chip with 25 frequency-tunable transmon qubits coupled to a common coplanar resonator. The collective br…
Topological photon pairs in a superconducting quantum metamaterial
Ilya S. Besedin, Maxim A. Gorlach, Nikolay N. Abramov +9
Recent discoveries in topological physics hold a promise for disorder-robust quantum systems and technologies. Topological states provide the crucial ingredient of such systems fea…