Phys. Rev. Lett. 101, 240405 (2008) [4 pages]Quantum Darwinism in Quantum Brownian MotionReceived 15 May 2007; revised 28 March 2008; published 11 December 2008 Quantum Darwinism—the redundant encoding of information about a decohering system in its environment—was proposed to reconcile the quantum nature of our Universe with apparent classicality. We report the first study of the dynamics of quantum Darwinism in a realistic model of decoherence, quantum Brownian motion. Prepared in a highly squeezed state—a macroscopic superposition—the system leaves records whose redundancy increases rapidly with initial delocalization. Redundancy appears rapidly (on the decoherence time scale) and persists for a long time. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.240405
DOI:
10.1103/PhysRevLett.101.240405
PACS:
03.65.Ta, 03.65.Yz, 03.67.Mn, 03.67.Pp
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