Using shortcut to adiabatic passage for the ultrafast quantum state transfer in cavity QED system

摘要

We propose an alternative scheme to implement the quantum state transferbetween two three-level atoms based on the invariant-based inverse engineeringin cavity quantum electronic dynamics (QED) system. The quantum information canbe ultrafast transferred between the atoms by taking advantage of the cavityfield as a medium for exchanging quantum information speedily. Throughdesigning the time-dependent laser pulse and atom-cavity coupling, we send theatoms through the cavity with a short time interval experiencing the twoprocesses of the invariant dynamics between each atom and the cavity fieldsimultaneously. Numerical simulation shows that the target state can beultrafast populated with a high fidelity even when considering the atomicspontaneous emission and the photon leakage out of the cavity field. We alsoredesign a reasonable Gaussian-type wave form in the atom-cavity coupling forthe realistic experiment operation.