%0 Journal Article %T Scheme for preparation of nonmaximal entanglement between two atomic ensembles %A Peng Xue %A Guang-Can Guo %J Physics %D 2002 %I arXiv %X We propose an experimentally feasible scheme to generate nonmaximal entanglement between two atomic ensembles. The degree of entanglement is readily tunable. The scheme involves laser manipulation of atomic ensembles, adjustable quarter- and half-wave plates, beam splitter, polarizing beam splitters, and single-photon detectors, and well fits the status of the current experimental technology. Finally we use the nonmaximally entangled state of ensembles to demonstrate quantum nonlocality by detecting the Clauser-Horne-Shimony-Holt inequality. %U http://arxiv.org/abs/quant-ph/0207021v2