Nonclassical state via superposition of two coherent states (pi/2 out of phase) and related entangled states

作者：Zeng Ran; Ashfaq Muhammad; Liu Shutian^*

来源：Optics Communications, 2007, 271(1): 162-168.

DOI：10.1016/j.optcom.2006.10.032

• nonclassical states
• superposition of coherent states
• photon statistics
• entanglement

Nonclassical features of the superposition of two coherent states which are pi/2 out of phase are discussed, such as sub-Poissonian photon statistics and quadrature squeezing, as. well as negativity of the Wigner function. Special nonclassicality is found in the special state where the relative phase of superposition has relationship with the average photon number. The analysis of the amount of entanglement is also presented for the related two-mode entangled coherent states.

• 出版日期2007-3-1
• 单位哈尔滨工业大学