Document Type

Article

Publication Date

2008

Department

Physics & Computer Science

Abstract

Schumacher and Westmoreland [Phys. Rev. A 64, 42304 (2001)] have established a quantum analog of a well-known classical information theory result on a role of relative entropy as a measure of nonoptimality in classical data compression. In this paper, we provide an alternative simple and constructive proof of this result by constructing quantum compression codes schemes from classical data compression codes. Moreover, as the quantum data compression or coding task can be effectively reduced to a quasi classical one, we show that relevant results from classical information theory and data compression become applicable and therefore can be extended to the quantum domain.

Comments

This article was originally published in Physical Review A, 78(2): 022311. © 2008 The American Physical Society

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