Fast generation of W state via superadiabatic-based shortcut in circuit quantum electrodynamics* *Project supported by the National Natural Science Foundation of China (Grant No. 61871234) and sponsored by NUPTSF (Grant Nos. NY218097 and NY220178).

Abstract

We propose a scheme to fast prepare the three-qubit W state via superadiabatic-based shortcuts in a circuit quantum electrodynamics (circuit QED) system. We derive the effective Hamiltonian to suppress the unwanted transitions between different eigenstates by counterdiabatic driving, and obtain the W state with high-fidelity based on the superadiabatic passage. The numerical simulation results demonstrate that the proposed scheme can accelerate the evolution, and is more efficient than that with the adiabatic passage. In addition, the proposed scheme is robust to the decoherence caused by the resonator decay and qubit relaxation, and does not need additional parameters, which could be feasible in experiment.