Fast Physical Random-Number Generation Based on Room-Temperature Chaotic Oscillations in Weakly Coupled Superlattices

Abstract

An all-electronic physical random number generator at rates up to 80 Gbit/s is presented, based on weakly coupled GaAs/Ga0.55Al0.45As superlattices operated at room temperature. It is based on large-amplitude, chaotic current oscillations characterized by a bandwidth of several hundred MHz and do not require external feedback or conversion to an electronic signal prior to digitization. The method is robust and insensitive to external perturbations and its fully electronic implementation suggests scalability and minimal postprocessing in comparison to existing optical implementations.

Intermittency route to chaos and broadband high-frequency generation in semiconductor superlattice coupled to external resonator

“…These characteristics match or even exceed similar parameters of other solid-state and vacuum sources of chaotic signals [25,[63][64][65][66][67][68]. The latter makes the SL coupled to a resonator promising for using it as a key element in broadband sources of chaotic microwaves or fast random number generators [20,27,43,69], which could have applications in high-speed chaotic communications and spreadspectrum spectroscopy. In addition, previous works [24,28] have shown theoretically and experimentally that noise can significantly enhance the chaos generated in weakly coupled SLs.…”

“…We demonstrate that in the system under study the relative spectral band width of generated chaotic voltage oscillations is very sensitive to applied voltage and can reach values more than 25%. The results, which we report here, will be useful, e.g., for development and design of high-frequency chaos generators that use SL devices as key elements [27,43].…”

Динамические Режимы Автогенерации Сверхвысокочастотного Сигнала В Радиофотонном Кольцевом Генераторе

“…44135.1958 Введение В последние годы особый интерес исследователей вызывает разработка сверхвысокочастотных (СВЧ) ге-нераторов динамического хаоса. Он обусловливается возможностью использования хаотических сигналов в телекоммуникационных [1] и радарных [2] системах, а также в генераторах случайных чисел [3]. При этом особое внимание уделяется ширине спектра генери-руемого хаотического сигнала.…”

Analysis on the Influence of Shortwave Communication in Different Ground Forms

“…According to these contents, the formula is calculated as follows [13]. Considering that the ship is mainly located in the marine area, the ground forms are set to sea water and dry soil.…”