121 citations · 248 across the 14 of their papers we have counts for
13 papers · 1 filter
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…
Superconducting integrated on-demand quantum memory with microwave pulse preservation
Aleksei R. Matanin, Nikita S. Smirnov, Anton I. Ivanov +8
Microwave quantum memory represents a critical component for quantum radars and resource-efficient approaches to quantum error correction. Superconducting microwave resonators prov…
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…
Wiring surface loss of a superconducting transmon qubit
Nikita S. Smirnov, Elizaveta A. Krivko, Anastasiya A. Solovieva +2
Quantum processors using superconducting qubits suffer from dielectric loss leading to noise and dissipation. Qubits are usually designed as large capacitor pads connected to a non…
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: shadow evaporation and oxidation
D. O. Moskalev, E. V. Zikiy, A. A. Pishchimova +5
The most commonly used physical realization of superconducting qubits for quantum circuits is a transmon. There are a number of superconducting quantum circuits applications, where…
Broadband SNAIL parametric amplifier with microstrip impedance transformer
D. Ezenkova, D. Moskalev, N. Smirnov +8
Josephson parametric amplifiers have emerged as a promising platform for quantum information processing and squeezed quantum states generation. Travelling wave and impedance-matche…
Robust cryogenic matched low-pass coaxial filters for quantum computing applications
Andrey A. Samoylov, Anton I. Ivanov, Vladimir V. Echeistov +5
Electromagnetic noise is one of the key external factors decreasing superconducting qubits coherence. Matched coaxial filters can prevent microwave and IR photons negative influenc…
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…
Towards highly efficient broadband superconducting quantum memory
A. R. Matanin, K. I. Gerasimov, E. S. Moiseev +8
Microwave quantum memory promises advanced capabilities for noisy intermediate-scale superconducting quantum computers. Existing approaches to microwave quantum memory lack complet…
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…