5 papers
Strongly nonlinear regime of Josephson transmission lines revealed by two-tone spectroscopy
A. S. Averkin, A. A. Kopasov, I. E. Pologov +5
We present experimental and theoretical studies of the off-resonant and strongly nonlinear regime of Josephson transmission lines (JTLs) with galvanically-coupled nonlinear element…
Realization of a Quantum Error Detection Code with a Dynamically Reassigned Ancillary Qubit
Alena S. Kazmina, Artyom M. Polyanskiy, Elena Yu. Egorova +5
Quantum error correction (QEC) is essential for achieving fault-tolerant quantum computing. While superconducting qubits are among the most promising candidates for scalable QEC, t…
Variational preparation of entangled states in a system of transmon qubits
Alexander Yeremeyev, Aleksei Tolstobrov, Gleb Fedorov +11
The conventional method for generating entangled states in qubit systems relies on applying precise two-qubit entangling gates alongside single-qubit rotations. However, achieving…
High quality quasinormal modes of phononic crystals for quantum acoustodynamics
Aleksey N. Bolgar, Shtefan V. Sanduleanu, Aleksandr Strelnikov +1
Phononic crystals are a promising platform for the study of quantum acoustodynamics. In a recent experiment, the interaction of a superconducting quantum bit with modes of a phonon…
Highly stable aluminum air-bridges with stiffeners
Aleksey N. Bolgar, Daria A. Kalacheva, Viktor B. Lubsanov +4
Air-bridges play a critical role in the performance of microwave circuits integrated with superconducting quantum bits, and their mechanical stability is predominant for reliable o…