Geometric phases in open systems: A model to study how they are corrected by decoherence

We calculate the geometric phase for an open system (spin-boson model) which interacts with an environment (ohmic or nonohmic) at arbitrary temperature. However there have been many assumptions about the time scale at which the geometric phase can be measured, there has been no reported observation...

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Autores principales: Lombardo, F.C., Villar, P.I.
Formato: JOUR
Materias:
Fault-tolerant quantum computations
Geometric phases
Coherent light
Computation theory
Mathematical models
Numerical methods
Open systems
Phase transitions
Quantum theory
Thermal effects
Computational geometry
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10502947_v74_n4_p_Lombardo
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_10502947_v74_n4_p_Lombardo2023-10-03T15:59:51Z Geometric phases in open systems: A model to study how they are corrected by decoherence Lombardo, F.C. Villar, P.I. Fault-tolerant quantum computations Geometric phases Coherent light Computation theory Mathematical models Numerical methods Open systems Phase transitions Quantum theory Thermal effects Computational geometry We calculate the geometric phase for an open system (spin-boson model) which interacts with an environment (ohmic or nonohmic) at arbitrary temperature. However there have been many assumptions about the time scale at which the geometric phase can be measured, there has been no reported observation of geometric phases for mixed states under nonunitary evolution yet. We study not only how they are corrected by the presence of the different type of environments but estimate the corresponding times at which decoherence becomes effective as well. These estimations should be taken into account when planning experimental setups to study the geometric phase in the nonunitary regime, particularly important for the application of fault-tolerant quantum computation. © 2006 The American Physical Society. Fil:Lombardo, F.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Villar, P.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10502947_v74_n4_p_Lombardo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Fault-tolerant quantum computations
Geometric phases
Coherent light
Computation theory
Mathematical models
Numerical methods
Open systems
Phase transitions
Quantum theory
Thermal effects
Computational geometry
spellingShingle Fault-tolerant quantum computations
Geometric phases
Coherent light
Computation theory
Mathematical models
Numerical methods
Open systems
Phase transitions
Quantum theory
Thermal effects
Computational geometry
Lombardo, F.C.
Villar, P.I.
Geometric phases in open systems: A model to study how they are corrected by decoherence
topic_facet Fault-tolerant quantum computations
Geometric phases
Coherent light
Computation theory
Mathematical models
Numerical methods
Open systems
Phase transitions
Quantum theory
Thermal effects
Computational geometry
description We calculate the geometric phase for an open system (spin-boson model) which interacts with an environment (ohmic or nonohmic) at arbitrary temperature. However there have been many assumptions about the time scale at which the geometric phase can be measured, there has been no reported observation of geometric phases for mixed states under nonunitary evolution yet. We study not only how they are corrected by the presence of the different type of environments but estimate the corresponding times at which decoherence becomes effective as well. These estimations should be taken into account when planning experimental setups to study the geometric phase in the nonunitary regime, particularly important for the application of fault-tolerant quantum computation. © 2006 The American Physical Society.
format JOUR
author Lombardo, F.C.
Villar, P.I.
author_facet Lombardo, F.C.
Villar, P.I.
author_sort Lombardo, F.C.
title Geometric phases in open systems: A model to study how they are corrected by decoherence
title_short Geometric phases in open systems: A model to study how they are corrected by decoherence
title_full Geometric phases in open systems: A model to study how they are corrected by decoherence
title_fullStr Geometric phases in open systems: A model to study how they are corrected by decoherence
title_full_unstemmed Geometric phases in open systems: A model to study how they are corrected by decoherence
title_sort geometric phases in open systems: a model to study how they are corrected by decoherence
url http://hdl.handle.net/20.500.12110/paper_10502947_v74_n4_p_Lombardo
work_keys_str_mv AT lombardofc geometricphasesinopensystemsamodeltostudyhowtheyarecorrectedbydecoherence
AT villarpi geometricphasesinopensystemsamodeltostudyhowtheyarecorrectedbydecoherence
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