Single-mode excited entangled coherent states (SMEECSs) is a new kind of continuous-variable-type entangled pure states. In this paper, we investigate nonclassical properties of the SMEECSs, and focus on discussing the influence of photon excitations on quantum statistics. It is shown that the photon excitations excitated the nonclassical character amount of the SMEECS for some certain cases.

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A space-dependent atomic superfluid current in Bose-Einstein condensates * Li Fei(李 飞) a)c) † , Li Yong-Fan(李勇帆) b) , Zhang Ping-Ke(张平柯) a) , Ai Zhen-Zhou(艾振宙) a) , and Wu Chang-Yi(吴昌义) a) a