title: Lensless optical implementation of the coincidence fractional Fourier transform.
abstract: A lensless optical system for implementing the coincidence fractional Fourier transform (FRT) is proposed. The conditions for the lensless optical system to implement the coincidence FRT with incoherent light and entangled photon pairs are discussed. The results offer a novel scheme for FRTs and thus suggest useful applications.
authors.affiliation: Joint Research Center of Photonics of the Royal Institute of Technology and Zhejiang University, East Building No. 5, Zijingang Campus, Zhejiang University, Hangzhou 310027, China. yangjian_cai@yahoo.com.cn
authors.forename: Yangjian
authors.initials: Y
authors.lastname: Cai
authors.forename: Fei
authors.initials: F
authors.lastname: Wang