A. Becir

TL;DR: In this article, the authors proposed a continuous variable quantum key distribution protocol based on discrete modulation of eight-state coherent states, which showed high tolerance against excess noise and promises to achieve over 100 km distance of optical fiber.

TL;DR: A simple mathematical model developed from coupled-mode theory is presented to describe the relationship between Bragg transmission loss, grating length, coupling coefficients, and bending loss in a bent fiber Bragg grating to indicate that the decrement of BTL can be attributed to the increasing bending loss and degradation of both dc and ac coupling coefficients as the bending radius decreases.

TL;DR: In this paper, an optical Gaussian notch filter was constructed from a periodic microbent fiber Bragg grating attained by using two copper-wire-wound slabs, which can be used as a Gaussian filter.

TL;DR: It is shown that the use of phase coherent states gives better performance in terms of noise tolerance, key rate, and achievable distance than that of common linear coherent states.

TL;DR: Upper bounds for the eavesdropping collective attacks on general continuous variable quantum key distribution protocols are derived and it is shown that the eavesdropper’s accessible information is independent of the initial correlation between Alice and Bob modes in reverse reconciliation scheme.