Objectivity in a Noisy Photonic Environment through Quantum State Information Broadcasting

J.k. Korbicz; Paweł Horodecki; Ryszard Horodecki

doi:10.1103/physrevlett.112.120402

Objectivity in a Noisy Photonic Environment through Quantum State Information Broadcasting

Abstract

Recently, the emergence of classical objectivity as a property of a quantum state has been explicitly derived for a small object embedded in a photonic environment in terms of a spectrum broadcast form—a specific classically correlated state, redundantly encoding information about the preferred states of the object in the environment. However, the environment was in a pure state and the fundamental problem was how generic and robust is the conclusion. Here, we prove that despite the initial environmental noise, the emergence of the broadcast structure still holds, leading to the perceived objectivity of the state of the object. We also show how this leads to a quantum Darwinism-type condition, reflecting the classicality of proliferated information in terms of a limit behavior of the mutual information. Quite surprisingly, we find “singular points” of the decoherence,

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Authors (3)

J.k. Korbicz
- Uniwersytet Gdański Wydział Fizyki
Paweł Horodecki prof. dr hab.
Ryszard Horodecki
- Uniwersytet Gdański Wydział Fizyki

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: PHYSICAL REVIEW LETTERS no. 112, pages 1 - 5,
ISSN: 0031-9007
Language:: English
Publication year:: 2014
Bibliographic description:: Korbicz J., Horodecki P., Horodecki R.: Objectivity in a Noisy Photonic Environment through Quantum State Information Broadcasting// PHYSICAL REVIEW LETTERS. -Vol. 112, nr. 120402 (2014), s.1-5
DOI:: Digital Object Identifier (open in new tab) 10.1103/physrevlett.112.120402
Verified by:: Gdańsk University of Technology