Entanglement trapping in structured environments

Bruno Bellomo, Rosario Lo Franco, Sabrina Maniscalco, Giuseppe Compagno

Research output: Contribution to journalArticle

175 Citations (Scopus)
42 Downloads (Pure)

Abstract

We derive and solve analytically the non-Markovian master equation for harmonic quantum Brownian motion proving that, for weak system-reservoir couplings and high temperatures, it can be recast in the form of the master equation for a harmonic oscillator interacting with a squeezed thermal bath. This equivalence guarantees preservation of positivity of the density operator during the time evolution and allows one to establish a connection between the dynamics of Schrödinger cat states in squeezed environments and environment-induced decoherence in quantum Brownian motion.
Original languageEnglish
Article number060302
Number of pages4
JournalPhysical Review A
Volume78
Issue number6
DOIs
Publication statusPublished - 12 Dec 2008

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