scholarly journals Quantum Communications

2021 ◽  
pp. 257-302
Entropy ◽  
2021 ◽  
Vol 23 (3) ◽  
pp. 377
Author(s):  
Alexander Holevo

In this paper, we consider the classical capacity problem for Gaussian measurement channels. We establish Gaussianity of the average state of the optimal ensemble in the general case and discuss the Hypothesis of Gaussian Maximizers concerning the structure of the ensemble. Then, we consider the case of one mode in detail, including the dual problem of accessible information of a Gaussian ensemble. Our findings are relevant to practical situations in quantum communications where the receiver is Gaussian (say, a general-dyne detection) and concatenation of the Gaussian channel and the receiver can be considered as one Gaussian measurement channel. Our efforts in this and preceding papers are then aimed at establishing full Gaussianity of the optimal ensemble (usually taken as an assumption) in such schemes.


2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Mario Mastriani ◽  
Sundaraja Sitharama Iyengar ◽  
K. J. Latesh Kumar

2021 ◽  
pp. 53-66
Author(s):  
Artem Andreevich Kosorukov

The subject of this research is the advanced technological solutions associated with the transition from digital to neuro-communication technologies in the sphere of public administration. The author explores the current stage of development of the NeuroNet, which is the new-generation information and communication network, which promotes the transition from the data-centrism of digital government towards the intelligence-centrism of neuro-digital public administration. The article also considers the possibility of connecting brain-computer interfaces in the sphere of interpersonal communication, contributing to the formation of neurocognitive level of mass communication, neuro-digital interaction between the government authorities and the citizens. At the same time, one of the crucial aspects of the neuro-communicative environment is the digital equivalents of a human, the Internet of things and objects of material infrastructure, which e shift the management processes to the sphere of virtual and augmented reality. The novelty of the this work consists in disclosure of the applied aspects of implementation of quantum communications in digital infrastructure of public administration, which ensure secure interdepartmental document flow, as well as dialogue with citizens, including on the level of neuro-communications, and allow effectively counteracting quantum hacking. Digital sensorics and technical bionics, combining the capabilities of control of unmanned transport vehicles and robotics, significantly impacting the development of a “smart city” based on the big data and predictive analytics, and reflecting the neural network structure of the digital state, make a considerable contribution to the scientific novelty of this research, and simultaneously actualize the aspect of neuro-communication as personal biodata and biosafety.


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