Entanglement trapping in structured environments

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

doi:10.1103/PhysRevA.78.060302

Entanglement trapping in structured environments

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

Research output: Contribution to journal › Article › peer-review

217 Citations (Scopus)

101 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 language	English
Article number	060302
Number of pages	4
Journal	Physical Review A
Volume	78
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevA.78.060302
Publication status	Published - 12 Dec 2008

Access to Document

10.1103/PhysRevA.78.060302

Download as pdfFinal published version, 132 KB

Cite this

@article{8a3a8d05cf6641bab4f99e73e3ae2113,

title = "Entanglement trapping in structured environments",

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 Schr{\"o}dinger cat states in squeezed environments and environment-induced decoherence in quantum Brownian motion. ",

author = "Bruno Bellomo and \{Lo Franco\}, Rosario and Sabrina Maniscalco and Giuseppe Compagno",

year = "2008",

month = dec,

day = "12",

doi = "10.1103/PhysRevA.78.060302",

language = "English",

volume = "78",

journal = "Physical Review A",

issn = "1050-2947",

publisher = "American Physical Society",

number = "6",

}

TY - JOUR

T1 - Entanglement trapping in structured environments

AU - Bellomo, Bruno

AU - Lo Franco, Rosario

AU - Maniscalco, Sabrina

AU - Compagno, Giuseppe

PY - 2008/12/12

Y1 - 2008/12/12

N2 - 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.

AB - 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.

U2 - 10.1103/PhysRevA.78.060302

DO - 10.1103/PhysRevA.78.060302

M3 - Article

SN - 1050-2947

VL - 78

JO - Physical Review A

JF - Physical Review A

IS - 6

M1 - 060302

ER -

Entanglement trapping in structured environments

Abstract

Access to Document

Fingerprint

Cite this