Showing papers on "Coherent information published in 1983"
TL;DR: In this paper, a quantum mechanical compound state of an input state and its output state generated through a communication channel is constructed, and the mutual information of quantum communication theory is defined by using the compound state, and its fundamental properties are studied.
Abstract: A quantum mechanical compound state of an input state and its output state generated through a communication channel is constructed. The mutual information of quantum communication theory is defined by using the compound state, and its fundamental properties are studied.
157 citations
Journal Article•
TL;DR: A quantum mechanical compound state of an input state and its output state generated through a communication channel is constructed and its fundamental properties are studied.
100 citations
TL;DR: In this paper, a way to construct an extension of the classical compound state in quantum systems has been presented, which is called the quantum compound state (QCS) and is defined as follows:
Abstract: When a state of a physical system dynamically changes to another state, it is important to know the correlation existing between the initial state and the final state. This correlation is described by a compound state (measure) in classical systems. In this note, we show a way how to construct such a compound state in quantum systems which is an extension of the classical compound state.
75 citations
TL;DR: The problems studied are the negentropy principle of information, a minimax information principle of thermal equilibrium and the role of information correlation in the derivation of a functional equation characterising the statistical equilibrium of a system.
Abstract: The interrelation between some basic concepts of information, theory and thermodynamics has been studied on the basis of the statistical measures of entropy and information. The problems studied are the negentropy principle of information, a minimax information principle of thermal equilibrium and the role of information correlation in the derivation of a functional equation characterising the statistical equilibrium of a system.
2 citations