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A condition for the zero-error capacity of quantum channels
Marciel M. Oliveira, Francisco M. de Assis, Micael A. Dias
In this paper, we present a condition for the zero-error capacity of quantum channels. To achieve this result we first prove that the eigenvectors (or eigenstates) common to the Kr…
Convergence of Density Operators and Security of Discrete Modulated CVQKD Protocols
Micael Andrade Dias, Francisco Marcos de Assis
This communication deals with the problem of bounding the approximation error on weak convergence of mixed coherent state towards a Gaussian thermal state. In the context of CVQKD…
A method for Sampling Bernoulli Variables
Francisco Marcos de Assis, Juliana Martins de Assis, Micael Andrade Dias
We introduce new method for generating correlated or uncorrelated Bernoulli random variables by using the binary expansion of a continuous random variable with support on the unit…
Converging State Distributions for Discrete Modulated CVQKD Protocols
Micael Andrade Dias, Francisco Marcos de Assis
Consider the problem of using a finite set of coherent states to distribute secret keys over a quantum channel. It is known that computing the exact secret key rate in this scenari…