2004Unpublished venueRequires access

On feedback and the classical capacity of a noisy quantum channel

Garry Bowen, Rajagopal Nagarajan

Open publisher page 1 citations

Abstract

In Shannon information theory the capacity of a memoryless communication channel cannot be increased by the use of feedback. The use of classical feedback is shown to provide no increase in the classical capacity of a memoryless quantum channel when feedback is used across nonentangled input states, or when the channel is an entanglement-breaking channel

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What this paper is about

In Shannon information theory the capacity of a memoryless communication channel cannot be increased by the use of feedback. The use of classical feedback is shown to provide no increase in the classical capacity of a memoryless quantum channel when feedback is used across nonentangled input states, or when the channel is an entanglement-breaking channel

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Available abstract

In Shannon information theory the capacity of a memoryless communication channel cannot be increased by the use of feedback. The use of classical feedback is shown to provide no increase in the classical capacity of a memoryless quantum channel when feedback is used across nonentangled input states, or when the channel is an entanglement-breaking channel

Key concepts: Classical capacity, Channel capacity, Channel (broadcasting), Quantum entanglement, Quantum channel, Amplitude damping channel, Quantum, Quantum capacity

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