Fast adiabatic quantum state transfer and entanglement generation between two atoms via dressed states

TL;DR

This paper develops a dressed-state method assisted by quantum Zeno dynamics to achieve fast adiabatic quantum state transfer and entanglement generation between two atoms, demonstrating robustness and experimental feasibility.

Contribution

It introduces a shortcut technique for rapid adiabatic processes using dressed states and quantum Zeno dynamics, enhancing speed and robustness in quantum state transfer and entanglement.

Findings

The scheme significantly speeds up adiabatic quantum processes.

Numerical simulations confirm robustness against parameter variations.

The method is feasible and effective in experimental conditions.

Abstract

Recently, a new method, which can significantly speed up adiabatic quantum state transfer by using dressed states, was proposed by Baksic \emph{et~al.} [Phys. Rev. Lett. \textbf{116}, 230503 (2016)]. Assisted by quantum Zeno dynamics, we develop this dressed-state method to achieve shortcuts to complete and fractional stimulated Raman adiabatic passage for speeding up adiabatic two-atom quantum state transfer and maximum entanglement generation, respectively. By means of some numerical simulations, we determine the parameters used in the scheme which can guarantee the feasibility and efficiency both in theory and experiment. Besides, we give strict numerical simulations to discuss the scheme's robustness, and the results show the scheme is robust against the variations in the parameters, atomic spontaneous emissions and the photon leakages from the cavity.