Author Affiliations

Weijian Wang,^1,* Ari T. Friberg,² and Emil Wolf^3,†

¹Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627 USA

²Department of Technical Physics, Helsinki University of Technology, FIN-02150 Espoo, Finland

³Department of Physics and Astronomy and Rochester Theory Center for Optical Science and Engineering, University of Rochester, Rochester, New York 14627 USA

^*Currently at Physical Optics Corporation, 26000 Gramercy Place, Building 100, Torrance, California 90501.

^†Also at The Institute of Optics, University of Rochester, Rochester, New York 14627.