title: Spatial mode properties of plasmon-assisted transmission.
abstract: Orbital angular momentum of photons is explored to study the spatial mode properties of the plasmon-assisted transmission process. We found that photons carrying different orbital angular momenta have different transmission efficiencies, while the coherence between these spatial modes can be preserved.
authors.affiliation: Key Laboratory of Quantum Information and Department of Physics, University of Science and Technology of China, Hefei, China.
authors.forename: Xi-Feng
authors.initials: XF
authors.lastname: Ren
authors.forename: Guo-Ping
authors.initials: GP
authors.lastname: Guo
authors.forename: Yun-Feng
authors.initials: YF
authors.lastname: Huang
authors.forename: Zhi-Wei
authors.initials: ZW
authors.lastname: Wang
authors.forename: Guang-Can
authors.initials: GC
authors.lastname: Guo