Jeffrey H. Shapiro

TL;DR: The novel fluctuation characteristics predicted for two-photon coherent-state radiation make possible high signal-to-noise ratio detection from a directional coupler that is very weakly linked to an information-bearing optical waveguide.

TL;DR: In this paper, the authors considered the information capacity of multiple-spatial-mode, wideband optical communications in vacuum between soft-aperture transmit and receive pupils and showed that the ultimate capacity is achieved by coherent-state encoding and joint measurements over entire code words.

TL;DR: The proposed SPGD algorithm based on Zernike polynomials improves the quality of the turbulence-distorted OAM beam and simultaneously correct multiple OAM beams propagating through the same turbulence, and the crosstalk among these modes is reduced by more than 5 dB.

TL;DR: In this paper, the spatial correlations present in real-world reflectivity and 3D structure are exploited to estimate depth and reflectivity using on the order of 1 detected photon per pixel averaged over the scene.

TL;DR: It is shown that parametric down-conversion, with a short-duration pump pulse and a long nonlinear crystal that is appropriately phase matched, can produce a frequency-entangled biphoton state whose individual photons are coincident in frequency.