Abstract
Motivated by “transitionless quantum driving”, we construct shortcuts to adiabatic passage in a three-atom system to create a singlet state with the help of quantum zeno dynamics and non-resonant lasers. The influence of various decoherence processes is discussed by numerical simulation and the results reveal that the scheme is fast and robust against decoherence and operational imperfection. We also investigate how to select the experimental parameters to control the cavity dissipation and atomic spontaneous emission which will have an application value in experiment.
Highlights
The influence of various decoherence processes is discussed by numerical simulation and the results reveal that the scheme is fast and robust against decoherence and operational imperfection
We have presented a promising method to construct shortcuts to adiabatic passage (STAP) for a three-atom system to generate singlet state in the cavity QED system
We simplify a multi-qubit system and choose the laser pulses to implement the fast generation of entangled states in light of quantum zeno dynamics and “transitionless quantum driving”
Summary
In our scheme we only need to select appropriate parameter to restrain atomic spontaneous emission and cavity decay in a short time To sum up, it is a better choice for the experimental researchers because the three-atom singlet state is generated much faster in the present shortcut scheme that contributes to the experimental research. Nowadays, according to the literature[65,66,67,68], the laser pulse which is used in our scheme can be obtained in a real experiment, so, our scheme is feasible in experiment
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