Malcolm N. O’Sullivan

TL;DR: A proof-of-principle experiment that indicates the feasibility of high-dimensional QKD based on the transverse structure of the light field allowing for the transfer of more than 1 bit per photon and demonstrates that, in addition to having an increased information capacity, multilevel QK D systems based on spatial-mode encoding can be more resilient against intercept-resend eavesdropping attacks.

TL;DR: In this paper, an experimental implementation of a free-space 11-dimensional communication system using orbital angular momentum (OAM) modes was described, and the effects of Kolmogorov thin-phase turbulence on the OAM channel capacity were quantified.

TL;DR: This work experimentally studied the degradation of mode purity for light beams carrying orbital angular momentum (OAM) propagating through simulated atmospheric turbulence, showing that turbulence uniformly degrades the purity of all the modes within this range, irrespective of mode number.

TL;DR: It is found analytically that the CNR of the normalized high-order ghost image is inversely proportional to the square root of the number of transmitting pixels of the object, and is the same as that of conventional ghost imaging with background subtraction.

TL;DR: In this article, the spatial resolution of the ghost image is found in general to depend on each of these wavelengths, although in many practical situations it depends primarily on the wavelength used to illuminate the object.