Dynamical maps for reduced states of indistinguishable particles
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Tipo de documento: | Tese |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFMG |
Texto Completo: | http://hdl.handle.net/1843/38280 https://orcid.org/0000-0001-5089-7483 |
Resumo: | In the present thesis, we examine two subjects in the theory of open quantum systems. The first subject deals with the description of the dynamics of open systems initially correlated with the environment. In the theory of open quantum systems, maps characterizing the dynamics of a quantum system in contact with the environment are usually thought to be completely positive. However, this is not necessarily true if the system and its environment are initially correlated, unless we restrict the domain on which the map acts, in other words, only a subset of the set of states of the system gets mapped to other states by the dynamical map. We present a framework for the construction of reduced dynamical maps for subsystems of indistinguishable fermionic particles. We show that in this scenario, a reduced map in the Kraus representation is possible for some sets of states where the only non-classical correlation present is exchange. The second subject studied is related to the characterization of non-Markovian dynamics with the divisibility and entanglement criteria. We obtain the analytical expression for the Kraus decomposition of the quantum map of an environment modeled by an arbitrary quadratic fermionic Hamiltonian acting on one or two qubits, we derive simple functions to examine the non positivity of the intermediate map. In the particular case of an environment represented by the Ising Hamiltonian, we discuss the two sources of non-Markovianity in the model, one due to the finite size of the lattice, and another due to the kind of interactions. |
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Reinaldo Oliveira Viannahttp://lattes.cnpq.br/8413008847105670Tiago DebarbaPablo Lima SaldanhaRaphael Campos DrumondJosé Geraldo Peixoto de FariaNadja Kolb Bernardeshttp://lattes.cnpq.br/8034924654599969Leonardo da Silva Souza2021-10-05T16:49:16Z2021-10-05T16:49:16Z2019-11-26http://hdl.handle.net/1843/38280https://orcid.org/0000-0001-5089-7483In the present thesis, we examine two subjects in the theory of open quantum systems. The first subject deals with the description of the dynamics of open systems initially correlated with the environment. In the theory of open quantum systems, maps characterizing the dynamics of a quantum system in contact with the environment are usually thought to be completely positive. However, this is not necessarily true if the system and its environment are initially correlated, unless we restrict the domain on which the map acts, in other words, only a subset of the set of states of the system gets mapped to other states by the dynamical map. We present a framework for the construction of reduced dynamical maps for subsystems of indistinguishable fermionic particles. We show that in this scenario, a reduced map in the Kraus representation is possible for some sets of states where the only non-classical correlation present is exchange. The second subject studied is related to the characterization of non-Markovian dynamics with the divisibility and entanglement criteria. We obtain the analytical expression for the Kraus decomposition of the quantum map of an environment modeled by an arbitrary quadratic fermionic Hamiltonian acting on one or two qubits, we derive simple functions to examine the non positivity of the intermediate map. In the particular case of an environment represented by the Ising Hamiltonian, we discuss the two sources of non-Markovianity in the model, one due to the finite size of the lattice, and another due to the kind of interactions.Na presente tese, examinamos dois tópicos da teoria de sistemas quânticos abertos. O primeiro tópico trata da descrição da dinâmica de sistemas inicialmente correlacionados com o ambiente. Na teoria de sistemas quânticos abertos, mapas que caracterizam a dinâmica do sistema quântico em contato com o ambiente são usualmente considerados completamente positivos. No entanto, isso não é necessariamente verdadeiro se o sistema e seu ambiente forem inicialmente correlacionados, a menos que se restrinja o domínio no qual o mapa atua, ou seja, apenas um subconjunto do conjunto de estados do sistema é mapeado para outros estados pelo mapa dinâmico. Nós introduzimos um quadro para a construção de mapas dinâmicos reduzidos para subsistemas de partículas fermiônicas indistinguíveis. Nesse cenário, um mapa reduzido na representação de Kraus é possível para alguns conjuntos de estados onde a única correlação não clássica presente é a de troca. O segundo tema estudado está relacionado à caracterização de dinâmicas não-markovianas com os critérios de divisibilidade e emaranhamento. Obtemos uma expressão analítica para a decomposição de Kraus do mapa quântico de um ambiente modelado por um hamiltoniano fermiônico quadrático arbitrário atuando em um ou dois qubits, derivamos funções simples para verificar a não positividade do mapa intermediário. No caso particular de um ambiente representado pelo Hamiltoniano de Ising, discutimos as duas fontes de não-Markovianidade no modelo, uma devido ao tamanho finito da rede, e outra devido ao tipo de interação.CNPq - Conselho Nacional de Desenvolvimento Científico e TecnológicoCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorengUniversidade Federal de Minas GeraisPrograma de Pós-Graduação em FísicaUFMGBrasilICX - DEPARTAMENTO DE FÍSICASistemas quânticosMapas quânticosPartículasOpen quantum systemQuantum mapIndistinguishable particlesNon-MarkovianityDynamical maps for reduced states of indistinguishable particlesMapas dinâmicos para estados reduzidos de partículas indistinguíveisinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMGinstname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMGORIGINALtese_leonardo.pdftese_leonardo.pdfapplication/pdf1776132https://repositorio.ufmg.br/bitstream/1843/38280/1/tese_leonardo.pdf1f5ceaf4c49b369566b00ac7b29305f5MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-82118https://repositorio.ufmg.br/bitstream/1843/38280/2/license.txtcda590c95a0b51b4d15f60c9642ca272MD521843/382802021-10-05 13:49:16.727oai:repositorio.ufmg.br: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ório de PublicaçõesPUBhttps://repositorio.ufmg.br/oaiopendoar:2021-10-05T16:49:16Repositório Institucional da UFMG - Universidade Federal de Minas Gerais (UFMG)false |
dc.title.pt_BR.fl_str_mv |
Dynamical maps for reduced states of indistinguishable particles |
dc.title.alternative.pt_BR.fl_str_mv |
Mapas dinâmicos para estados reduzidos de partículas indistinguíveis |
title |
Dynamical maps for reduced states of indistinguishable particles |
spellingShingle |
Dynamical maps for reduced states of indistinguishable particles Leonardo da Silva Souza Open quantum system Quantum map Indistinguishable particles Non-Markovianity Sistemas quânticos Mapas quânticos Partículas |
title_short |
Dynamical maps for reduced states of indistinguishable particles |
title_full |
Dynamical maps for reduced states of indistinguishable particles |
title_fullStr |
Dynamical maps for reduced states of indistinguishable particles |
title_full_unstemmed |
Dynamical maps for reduced states of indistinguishable particles |
title_sort |
Dynamical maps for reduced states of indistinguishable particles |
author |
Leonardo da Silva Souza |
author_facet |
Leonardo da Silva Souza |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Reinaldo Oliveira Vianna |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/8413008847105670 |
dc.contributor.advisor-co1.fl_str_mv |
Tiago Debarba |
dc.contributor.referee1.fl_str_mv |
Pablo Lima Saldanha |
dc.contributor.referee2.fl_str_mv |
Raphael Campos Drumond |
dc.contributor.referee3.fl_str_mv |
José Geraldo Peixoto de Faria |
dc.contributor.referee4.fl_str_mv |
Nadja Kolb Bernardes |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/8034924654599969 |
dc.contributor.author.fl_str_mv |
Leonardo da Silva Souza |
contributor_str_mv |
Reinaldo Oliveira Vianna Tiago Debarba Pablo Lima Saldanha Raphael Campos Drumond José Geraldo Peixoto de Faria Nadja Kolb Bernardes |
dc.subject.por.fl_str_mv |
Open quantum system Quantum map Indistinguishable particles Non-Markovianity |
topic |
Open quantum system Quantum map Indistinguishable particles Non-Markovianity Sistemas quânticos Mapas quânticos Partículas |
dc.subject.other.pt_BR.fl_str_mv |
Sistemas quânticos Mapas quânticos Partículas |
description |
In the present thesis, we examine two subjects in the theory of open quantum systems. The first subject deals with the description of the dynamics of open systems initially correlated with the environment. In the theory of open quantum systems, maps characterizing the dynamics of a quantum system in contact with the environment are usually thought to be completely positive. However, this is not necessarily true if the system and its environment are initially correlated, unless we restrict the domain on which the map acts, in other words, only a subset of the set of states of the system gets mapped to other states by the dynamical map. We present a framework for the construction of reduced dynamical maps for subsystems of indistinguishable fermionic particles. We show that in this scenario, a reduced map in the Kraus representation is possible for some sets of states where the only non-classical correlation present is exchange. The second subject studied is related to the characterization of non-Markovian dynamics with the divisibility and entanglement criteria. We obtain the analytical expression for the Kraus decomposition of the quantum map of an environment modeled by an arbitrary quadratic fermionic Hamiltonian acting on one or two qubits, we derive simple functions to examine the non positivity of the intermediate map. In the particular case of an environment represented by the Ising Hamiltonian, we discuss the two sources of non-Markovianity in the model, one due to the finite size of the lattice, and another due to the kind of interactions. |
publishDate |
2019 |
dc.date.issued.fl_str_mv |
2019-11-26 |
dc.date.accessioned.fl_str_mv |
2021-10-05T16:49:16Z |
dc.date.available.fl_str_mv |
2021-10-05T16:49:16Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1843/38280 |
dc.identifier.orcid.pt_BR.fl_str_mv |
https://orcid.org/0000-0001-5089-7483 |
url |
http://hdl.handle.net/1843/38280 https://orcid.org/0000-0001-5089-7483 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Física |
dc.publisher.initials.fl_str_mv |
UFMG |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
ICX - DEPARTAMENTO DE FÍSICA |
publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFMG instname:Universidade Federal de Minas Gerais (UFMG) instacron:UFMG |
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Universidade Federal de Minas Gerais (UFMG) |
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UFMG |
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UFMG |
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Repositório Institucional da UFMG |
collection |
Repositório Institucional da UFMG |
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