Generalized geometric quantum speed limits

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dc.creatorPires, Diego Paiva
dc.creatorCianciaruso, Marco
dc.creatorCéleri, Lucas Chibebe
dc.creatorAdesso, Gerardo
dc.creatorPinto, Diogo de Oliveira Soares
dc.date.accessioned2023-05-04T13:19:29Z
dc.date.available2023-05-04T13:19:29Z
dc.date.issued2016
dc.description.abstractThe attempt to gain a theoretical understanding of the concept of time in quantum mechanics has triggered significant progress towards the search for faster and more efficient quantum technologies. One of such advances consists in the interpretation of the time-energy uncertainty relations as lower bounds for the minimal evolution time between two distinguishable states of a quantum system, also known as quantum speed limits. We investigate how the nonuniqueness of a bona fide measure of distinguishability defined on the quantum-state space affects the quantum speed limits and can be exploited in order to derive improved bounds. Specifically, we establish an infinite family of quantum speed limits valid for unitary and nonunitary evolutions, based on an elegant information geometric formalism. Our work unifies and generalizes existing results on quantum speed limits and provides instances of novel bounds that are tighter than any established one based on the conventional quantum Fisher information. We illustrate our findings with relevant examples, demonstrating the importance of choosing different information metrics for open system dynamics, as well as clarifying the roles of classical populations versus quantum coherences, in the determination and saturation of the speed limits. Our results can find applications in the optimization and control of quantum technologies such as quantum computation and metrology, and might provide new insights in fundamental investigations of quantum thermodynamics.pt_BR
dc.identifier.citationPIRES, Diego Paiva; CIANCIARUSO, Marco; CÉLERI, Lucas C; ADESSO, Gerardo; SOARES-PINTO, Diogo O. Generalized geometric quantum speed limits. Physical Review X, New York, v. 6, n. 2, e021031, 2016. DOI: 10.1103/PhysRevX.6.021031. Disponível em: https://journals.aps.org/prx/abstract/10.1103/PhysRevX.6.021031. Acesso em: 3 maio 2023.pt_BR
dc.identifier.doihttps://doi.org/10.1103/PhysRevX.6.021031
dc.identifier.issne- 2160-3308
dc.identifier.urihttp://repositorio.bc.ufg.br/handle/ri/22464
dc.language.isoengpt_BR
dc.publisher.countryEstados unidospt_BR
dc.publisher.departmentInstituto de Física - IF (RG)pt_BR
dc.rightsAcesso Abertopt_BR
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectQuantum physicspt_BR
dc.subjectQuantum informationpt_BR
dc.titleGeneralized geometric quantum speed limitspt_BR
dc.typeArtigopt_BR

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