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Entanglement loss in molecular quantum-dot qubits due to interaction with the environment
dc.contributor.author | Blair, Enrique P. | |
dc.contributor.author | Tóth, Géza | |
dc.contributor.author | Lent, Craig S. | |
dc.date.accessioned | 2018-07-10T07:51:40Z | |
dc.date.available | 2018-07-10T07:51:40Z | |
dc.date.issued | 2018-05-16 | |
dc.identifier.citation | Journal of Physics-Condensed matter 30(19) : (2018) // Article ID 195602 | es_ES |
dc.identifier.issn | 0953-8984 | |
dc.identifier.issn | 1361-648X | |
dc.identifier.uri | http://hdl.handle.net/10810/28005 | |
dc.description.abstract | We study quantum entanglement loss due to environmental interaction in a condensed matter system with a complex geometry relevant to recent proposals for computing with single electrons at the nanoscale. We consider a system consisting of two qubits, each realized by an electron in a double quantum dot, which are initially in an entangled Bell state. The qubits are widely separated and each interacts with its own environment. The environment for each is modeled by surrounding double quantum dots placed at random positions with random orientations. We calculate the unitary evolution of the joint system and environment. The global state remains pure throughout. We examine the time dependence of the expectation value of the bipartite Clauser-Horne-Shimony-Holt (CHSH) and Brukner-Paunkovic-Rudolph-Vedral (BPRV) Bell operators and explore the emergence of correlations consistent with local realism. Though the details of this transition depend on the specific environmental geometry, we show how the results can be mapped on to a universal behavior with appropriate scaling. We determine the relevant disentanglement times based on realistic physical parameters for molecular double-dots. | es_ES |
dc.description.sponsorship | We acknowledge support from the National Science Foundation (Grant No. DGE-1313583). We also acknowledge the support of the EU (ERC Starting Grant 258647/GEDENTQOPT, COST Action CA15220, QuantERA CEBBEC), the Spanish Ministry of Economy, Industry and Competitiveness and the European Regional Development Fund FEDER through Grant No. FIS2015-67161-P (MINECO/FEDER, EU), the Basque Government (Grant No. IT986-16), and the National Research, Development and Innovation Office NKFIH (Grant No. K124351). | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | IOP Publishing | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/FIS2015-67161-P | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | quantum entanglement | es_ES |
dc.subject | quantum decoherence | es_ES |
dc.subject | quantum disentanglement state | es_ES |
dc.subject | atoms | es_ES |
dc.subject | limit | es_ES |
dc.subject | localization | es_ES |
dc.subject | inequality | es_ES |
dc.subject | system | es_ES |
dc.subject | space | es_ES |
dc.title | Entanglement loss in molecular quantum-dot qubits due to interaction with the environment | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | http://iopscience.iop.org/article/10.1088/1361-648X/aab98d/meta | es_ES |
dc.identifier.doi | 10.1088/1361-648X/aab98d | |
dc.departamentoes | Física teórica e historia de la ciencia | es_ES |
dc.departamentoeu | Fisika teorikoa eta zientziaren historia | es_ES |
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