High efficient scheme for remote state preparation with cavity QED

In this paper, a scheme is proposed for remote state preparation (RSP) withcavity quantum electrodynamics (QED). In our scheme, two observers sharetwo-atom nonmaximally entangled state as quantum channels and can realizeremote preparation of state of an atom. We also propose a generalization forremote preparation of $N$-atom entangled state by ($NIn this paper, a scheme is proposed for remote state preparation (RSP) withcavity quantum electrodynamics (QED). In our scheme, two observers sharetwo-atom nonmaximally entangled state as quantum channels and can realizeremote preparation of state of an atom. We also propose a generalization forremote preparation of $N$-atom entangled state by ($NIn this paper, a scheme is proposed for remote state preparation (RSP) withcavity quantum electrodynamics (QED). In our scheme, two observers sharetwo-atom nonmaximally entangled state as quantum channels and can realizeremote preparation of state of an atom. We also propose a generalization forremote preparation of $N$-atom entangled state by ($NIn this paper, a scheme is proposed for remote state preparation (RSP) withcavity quantum electrodynamics (QED). In our scheme, two observers sharetwo-atom nonmaximally entangled state as quantum channels and can realizeremote preparation of state of an atom. We also propose a generalization forremote preparation of $N$-atom entangled state by ($N$+1)-atom {GHZ-like} state ($N ge 2)$.By this scheme, one single-atom projective measurement is enough for the RSPof a qubit or $N$-atom entangled state, and the probability of success for RSP isunity. Furthermore, we have considered the case where observers use {W-like} state asquantum channels to realize RSP of a qubit. We compare our scheme withexisting ones.