We develop a unified, information theoretic interpretation of the number-phase complementarity that is applicable both to finite-dimensional (atomic) and infinite-dimensional (oscillator) systems. The relevant uncertainty principle is obtained as a lower bound on entropy excess, the difference between number entropy and phase knowledge, the latter defined as the relative entropy with respect to the uniform distribution. © 2010 Elsevier B.V. All rights reserved.

Subhashish Banerjee

Department of Physics

IIT Jodhpur

R. Srikanth

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Journal	Data powered by TypesetPhysics Letters, Section A: General, Atomic and Solid State Physics
Publisher	Data powered by TypesetElsevier B.V.
ISSN	03759601