System-time entanglement in a discrete time model
| cic.isFulltext | true | es |
| cic.isPeerReviewed | true | es |
| cic.lugarDesarrollo | Universidad Nacional de La Plata | es |
| cic.version | info:eu-repo/semantics/submittedVersion | es |
| dc.date.accessioned | 2019-05-23T13:10:55Z | |
| dc.date.available | 2019-05-23T13:10:55Z | |
| dc.identifier.uri | https://digital.cic.gba.gob.ar/handle/11746/10008 | |
| dc.title | System-time entanglement in a discrete time model | en |
| dc.type | Artículo | es |
| dcterms.abstract | We present a model of discrete quantum evolution based on quantum correlations between the evolving system and a reference quantum clock system. A quantum circuit for the model is provided, which in the case of a constant Hamiltonian is able to represent the evolution over2ntime steps in terms of justntime qubits andncontrol gates. We then introduce the concept of system-time entanglement as a measure of distinguishable quantum evolution, based on the entanglement between the system and the reference clock. This quantity vanishes for stationary states and is maximum for systems jumping onto a new orthogonal state at each time step. In the case of a constant Hamiltonian leading to a cyclic evolution it is a measure of the spread over distinct energy eigenstates, and satisfies an entropic energy-time uncertainty relation. The evolution of mixed states is also examined. Analytical expressions for the basic case of a qubit clock, as well as for the continuous limit in the evolution between two states, are provided. | en |
| dcterms.creator.author | Boette, Alan Pablo | es |
| dcterms.creator.author | Rossignoli, Raúl Dante | es |
| dcterms.creator.author | Gigena, Nicolás | es |
| dcterms.creator.author | Cerezo de la Rocca, Marco Vinicio | es |
| dcterms.extent | 7 p. | es |
| dcterms.identifier.other | DOI:10.1103/PhysRevA.93.062127 | es |
| dcterms.isPartOf.issue | vol. 93 | es |
| dcterms.isPartOf.series | Physical Review A | es |
| dcterms.issued | 2016-06-27 | |
| dcterms.language | Inglés | es |
| dcterms.license | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | es |
| dcterms.subject | Quantum time models | en |
| dcterms.subject | Quantum entanglemen | en |
| dcterms.subject.materia | Ciencias Naturales y Exactas | es |
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