title: One-way invisible cloak using parity-time symmetric transformation optics.
abstract: We propose a one-way invisible cloak using transformation optics of parity-time (PT) symmetric optical materials. At the spontaneous PT-symmetry breaking point, light is scattered only for incidence along one direction since the phase-matching condition is unidirectionally satisfied, making the cloak one-way invisible. Moreover, optical scattering from the one-way cloak can be further engineered to realize more interesting effects, for example, creating a unidirectional optical illusion of the concealed object.
authors.affiliation: NSF Nanoscale Science and Engineering Center, University of California, Berkeley, California 94720, USA.
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Zhu
authors.forename: Liang
authors.initials: L
authors.lastname: Feng
authors.forename: Peng
authors.initials: P
authors.lastname: Zhang
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Yin
authors.forename: Xiang
authors.initials: X
authors.lastname: Zhang