Quantifying entanglement in multipartite conditional states of open quantum systems by measurements of their photonic environment - University of Regensburg Publication Server

URN to cite this document:: urn:nbn:de:bvb:355-epub-247475

Urbina, Juan Diego ; Strunz, Walter T. ; Viviescas, Carlos

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Date of publication of this fulltext: 08 Jun 2012 10:48

Alternative links to fulltext:Arxiv

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Abstract

A key lesson of the decoherence program is that information flowing out from an open system is stored in the quantum state of the surroundings. Simultaneously, quantum measurement theory shows that the evolution of any open system when its environment is measured is nonlinear and leads to pure states conditioned on the measurement record. Here we report the discovery of a fundamental relation ...