Quantum Capacity of Noisy Quantum Channel

Masanori Ohya and Noboru Watanabe ()
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Masanori Ohya: Science University of Tokyo, Department of Information Sciences
Noboru Watanabe: Science University of Tokyo, Department of Information Sciences

A chapter in Quantum Communication, Computing, and Measurement, 1997, pp 213-220 from Springer

Abstract: Abstract In quantum communication theory, the quantum mutual entropy [4] is an important tool to analyse the efficiency of information transmission. It is the amount of information correctly transmitted from an input system to an output system through a quantum channel. The supremum of the quantum mutual entropy over a certain set of states with a fixed quantum channel is the quantum capacity of the channel. The capacity for quantum systems has been discussed in several papers, like [1,2,12]. In [8], we studied the quantum capacity for purely quantum channels.

Keywords: Quantum Channel; Quantum Communication; Energy Constraint; Quantum Code; Quantum Information Theory (search for similar items in EconPapers)
Date: 1997
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-1-4615-5923-8_23

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DOI: 10.1007/978-1-4615-5923-8_23

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