5 papers
Counterdiabatic driving for random-gap Landau-Zener transitions
Georgios Theologou, Mikkel F. Andersen, Sandro Wimberger
The Landau--Zener (LZ) model describes a two-level quantum system that undergoes an avoided crossing. In the adiabatic limit, the transition probability vanishes. An auxiliary cont…
Comparison of Two Optimization Methods for a Rydberg Quantum Gate
Luis S. Yagüe Bosch, Sandro Wimberger
A shortcut-to-adiabaticity is compared with a numerically optimized protocol for implementing a high-fidelity quantum gate on Rydberg atoms. The counterdiabatic method offers an an…
Reversing adiabatic state preparation in few-level quantum systems
L. Romanato, N. Eshaqi-Sani, L. Lepori +3
We present a detailed study of an adiabatic state preparation in an effective three-level quantum system. States can be prepared with high speed and fidelity by adding a counterdia…
Shortcut-to-Adiabatic Controlled-Phase Gate in Rydberg Atoms
Luis S. Yagüe Bosch, Tim Ehret, Francesco Petiziol +2
A shortcut-to-adiabatic protocol for the realization of a fast and high-fidelity controlled-phase gate in Rydberg atoms is developed. The adiabatic state transfer, driven in the hi…
Multipassage Landau-Zener tunneling oscillations in transverse/longitudinal dual dressing of atomic qubits
Alessandro Fregosi, Carmela Marinelli, Carlo Gabbanini +7
We investigate the time evolution of a non-resonant dressed-atom qubit in an XZ original configuration. It is composed of two electromagnetic fields, one oscillating parallel and t…