Journal
IEEE TRANSACTIONS ON INFORMATION THEORY
Volume 54, Issue 2, Pages 743-748Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIT.2007.913242
Keywords
coherent information; entanglement information rate distortion; quantum Gaussian channel; quantum Gaussian source; rate distortion
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Quantum distortion operator is introduced based on canonical operators. As the lower bound of quantum information rate distortion, the entanglement information rate distortion is achieved by Gaussian map for Gaussian source. The entanglement information rate-distortion function is calculated for one-mode Gaussian source, it is achieved by a nontrivial unitary transformation. The rate distortion is achievable at zero distortion point. In contrast to the distortion defined via fidelity, our definition of the distortion makes it possible to calculate the entanglement information rate-distortion function for Gaussian source.
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