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Classical information capacity of superdense coding

Date

Authors

Bowen, Garry

Publisher

American Physical Society

Abstract

Classical communication through quantum channels may be enhanced by sharing entanglement. Superdense coding allows the encoding, and transmission, of up to two classical bits of information in a single qubit. In this paper, the maximum classical channel capacity for states that are not maximally entangled is derived. Particular schemes are then shown to attain this capacity, first for pairs of qubits, and second for pairs of qutrits.

Keywords

Keywords: Asymptotic stability; Channel capacity; Information theory; Mathematical operators; Matrix algebra; Signal encoding; Quantum computation; Superdense coding (SDC); Quantum theory

Citation

Physical Review A 63.2 (2001): 022302/1-4

URI

http://hdl.handle.net/10440/1018
http://digitalcollections.anu.edu.au/handle/10440/1018

Collections

Open Access Research

Source

Physical Review A: Atomic, Molecular and Optical Physics

Type

Journal article

DOI

10.1103/PhysRevA.63.022302

Downloads

File

Description

Bowen_Classical2001.pdf (50.89 KB)