Shortcuts to adiabatic passage for fast preparation of multipartite entanglement among atomic ensembles
Department of Physics, Fuzhou
Received in final form: 26 May 2016
Published online: 30 August 2016
In this paper, we describe a scheme for preparation of W state among atomic ensembles by constructing shortcuts to adiabatic passage (STAP) based on the “Lewis-Riesenfeld (LR) invariants” in spatially separated cavities connected by optical fibers. The scheme is not only fast, but robust against variation of the parameters. The influence of various decoherence processes on the fidelity is discussed as well. Numerical simulations demonstrate that the fidelity of the three-atomic-ensemble W state is relatively high. Moreover, the method can be generalized to prepare W state among any number of atomic ensembles.
Key words: Quantum Information
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2016