Stabilization of quantum metastable states by dissipation

Bernardo Spagnolo; Davide Valenti; Luca Magazzu'; null Caldara; Luca Magazzù; null Spagnolo; null Valenti; Pasquale Caldara

Stabilization of quantum metastable states by dissipation

Bernardo Spagnolo, Davide Valenti, Luca Magazzu', Caldara, Luca Magazzù, Spagnolo, Valenti, Pasquale Caldara

Fisica e Chimica - Emilio Segrè

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

98 Citations (Scopus)

Abstract

Normally, quantum fluctuations enhance the escape from metastable states in the presence of dissipation. Here we show that dissipation can enhance the stability of a quantum metastable system, consisting of a particle moving in a strongly asymmetric double well potential, interacting with a thermal bath. We find that the escape time from the metastable region has a nonmonotonic behavior versus the system-bath coupling and the temperature, producing a stabilizing effect.

Original language	English
Pages (from-to)	235412-1-235412-7
Number of pages	7
Journal	PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS
Volume	91
Publication status	Published - 2015

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

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title = "Stabilization of quantum metastable states by dissipation",

abstract = "Normally, quantum fluctuations enhance the escape from metastable states in the presence of dissipation. Here we show that dissipation can enhance the stability of a quantum metastable system, consisting of a particle moving in a strongly asymmetric double well potential, interacting with a thermal bath. We find that the escape time from the metastable region has a nonmonotonic behavior versus the system-bath coupling and the temperature, producing a stabilizing effect.",

author = "Bernardo Spagnolo and Davide Valenti and Luca Magazzu' and Caldara and Luca Magazz{\`u} and Spagnolo and Valenti and Pasquale Caldara",

year = "2015",

language = "English",

volume = "91",

pages = "235412--1--235412--7",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

}

TY - JOUR

T1 - Stabilization of quantum metastable states by dissipation

AU - Spagnolo, Bernardo

AU - Valenti, Davide

AU - Magazzu', Luca

AU - Caldara, null

AU - Magazzù, Luca

AU - Spagnolo, null

AU - Valenti, null

AU - Caldara, Pasquale

PY - 2015

Y1 - 2015

N2 - Normally, quantum fluctuations enhance the escape from metastable states in the presence of dissipation. Here we show that dissipation can enhance the stability of a quantum metastable system, consisting of a particle moving in a strongly asymmetric double well potential, interacting with a thermal bath. We find that the escape time from the metastable region has a nonmonotonic behavior versus the system-bath coupling and the temperature, producing a stabilizing effect.

AB - Normally, quantum fluctuations enhance the escape from metastable states in the presence of dissipation. Here we show that dissipation can enhance the stability of a quantum metastable system, consisting of a particle moving in a strongly asymmetric double well potential, interacting with a thermal bath. We find that the escape time from the metastable region has a nonmonotonic behavior versus the system-bath coupling and the temperature, producing a stabilizing effect.

UR - http://hdl.handle.net/10447/155542

M3 - Article

VL - 91

SP - 235412-1-235412-7

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

SN - 1098-0121

ER -

Stabilization of quantum metastable states by dissipation

Abstract

All Science Journal Classification (ASJC) codes

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