title: Photon-counting 1.55 microm optical communications with pulse-position modulation and a multimode upconversion single-photon receiver.
abstract: We report single-photon frequency upconversion of multimode light from 1.55 to 0.532microm and demonstrate an end-to-end optical link that emulates photon-starved communications and atmospheric propagation. Using 64-ary pulse-position modulation and a half-rate serially concatenated turbo code we achieve a decoded efficiency of 0.3 detected photons/bit.
authors.affiliation: MIT Lincoln Laboratory, 244 Wood Street, Lexington, Massachusetts 02420, USA. albota@LL.mit.edu
authors.forename: Marius A
authors.initials: MA
authors.lastname: Albota
authors.forename: Bryan S
authors.initials: BS
authors.lastname: Robinson