Abstract

We present a proposal for generation of a robust tripartite Greenberger–Horne–Zeilinger state among three individual neutral Rydberg atoms. By modulating the relation between two-photon detuning and Rydberg interaction strength Uij(r), an effective Raman coupling is obtained between the hyperfine ground states |F=2,M=2 of three Rb87 atoms and the Rydberg states |rrr via the third-order perturbation theory. This method is also capable of implementing a three-qubit controlled-phase gate with each qubit encoded into the hyperfine ground states |F=1,M=1 and |F=2,M=2. As an extension, we generalize our scheme to the case of the multipartite GHZ state and quantum gate in virtue of high-order perturbation theory.

© 2014 Optical Society of America

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