High efficient scheme for remote state preparation with cavity QED
Li Deng, Ai-Xi Chen, Xu Yan-Qiu · Chinese Physics B · 2008
In this paper, a scheme is proposed for remote state preparation (RSP) with cavity quantum electrodynamics (QED). In our scheme, two observers share two-atom nonmaximally entangled state as quantum channels and can realize remote preparation of state of an atom. We also propose a generalization for remote preparation of N -atom entangled state by ( N +1)-atom GHZ-like state ( N ≥ 2). By this scheme, one single-atom projective measurement is enough for the RSP of a qubit or N -atom entangled state, and the probability of success for RSP is unity. Furthermore, we have considered the case where observers use W-like state as quantum channels to realize RSP of a qubit. We compare our scheme with existing ones.