3 papers
quant-ph2026
Non-perturbative switching rates in bistable open quantum systems: from driven Kerr oscillators to dissipative cat qubits
Léon Carde, Ronan Gautier, Nicolas Didier +3
In this work, we use path integral techniques to predict the switching rate in a single-mode bistable open quantum system. While analytical expressions are well-known to be accessi…
quant-ph2025
Optimal control in large open quantum systems: the case of transmon readout and reset
Ronan Gautier, Ãlie Genois, Alexandre Blais
We present a framework that combines the adjoint-state method together with reverse-time backpropagation to solve prohibitively large open-system quantum control problems. Our appr…
quant-ph2024
Combined Dissipative and Hamiltonian Confinement of Cat Qubits
Ronan Gautier, Alain Sarlette, Mazyar Mirrahimi
Quantum error correction with biased-noise qubits can drastically reduce the hardware overhead for universal and fault-tolerant quantum computation. Cat qubits are a promising real…