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Complementarity of quantum discord and classically accessible information Public Deposited

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  • The sum of the Holevo quantity (that bounds the capacity of quantum channels to transmit classical information about an observable) and the quantum discord (a measure of the quantumness of correlations of that observable) yields an observable-independent total given by the quantum mutual information. This split naturally delineates information about quantum systems accessible to observers - information that is redundantly transmitted by the environment - while showing that it is maximized for the quasi-classical pointer observable. Other observables are accessible only via correlations with the pointer observable. We also prove an anti-symmetry property relating accessible information and discord. It shows that information becomes objective - accessible to many observers - accessible as quantum information is relegated to correlations with the global environment, and, therefore, locally inaccessible. The resulting complementarity explains why, in a quantum Universe, we perceive objective classical reality while flagrantly quantum superpositions are out of reach.
  • Keywords: States, Decoherence, Physical reality, Darwinism, Einselection, Mechanical description
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  • Zwolak, M., & Zurek, W. H. (2013). Complementarity of quantum discord and classically accessible information. Scientific Reports, 3, 1729. doi:10.1038/srep01729
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  • 3
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  • This research is supported in part by the U.S. Department of Energy through the LANL/LDRD Program and in part by the John Templeton Foundation.
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  • description.provenance : Made available in DSpace on 2013-07-01T20:42:50Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: bb87e2fb4674c76d0d2e9ed07fbb9c86 (MD5) ZwolakMichaelPhysicsComplementarityQuantumDiscord.pdf: 4925145 bytes, checksum: cf86c51bea28c331d0a1e92d12ba63c7 (MD5) Previous issue date: 2013-05-20
  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2013-07-01T20:42:08Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: bb87e2fb4674c76d0d2e9ed07fbb9c86 (MD5) ZwolakMichaelPhysicsComplementarityQuantumDiscord.pdf: 4925145 bytes, checksum: cf86c51bea28c331d0a1e92d12ba63c7 (MD5)
  • description.provenance : Approved for entry into archive by Deborah Campbell(deborah.campbell@oregonstate.edu) on 2013-07-01T20:42:50Z (GMT) No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: bb87e2fb4674c76d0d2e9ed07fbb9c86 (MD5) ZwolakMichaelPhysicsComplementarityQuantumDiscord.pdf: 4925145 bytes, checksum: cf86c51bea28c331d0a1e92d12ba63c7 (MD5)

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