An Exact Approach to Elimination of Leakage in a Qubit Embedded in a Three-level System
dc.contributor.author | Sun, Yifan | |
dc.contributor.author | Zhang, Jun-Yi | |
dc.contributor.author | Wu, Lianao | |
dc.date.accessioned | 2020-01-31T09:04:36Z | |
dc.date.available | 2020-01-31T09:04:36Z | |
dc.date.issued | 2019-07-30 | |
dc.identifier.citation | Scientific Reports 9 : (2019) // Article ID 11035 | es_ES |
dc.identifier.issn | 2045-2322 | |
dc.identifier.uri | http://hdl.handle.net/10810/39753 | |
dc.description.abstract | Leakage errors damage a qubit by coupling it to other levels. Over the years, several theoretical approaches to dealing with such errors have been developed based on perturbation arguments. Here we propose a different strategy: we use a sequence of finite rotation gates to exactly eliminate leakage errors. The strategy is illustrated by the recently proposed charge quadrupole qubit in a triple quantum dot, where there are two logical states to encode the qubit and one leakage state. We found an su(2) subalgebra in the three-level system, and by using the subalgebra we show that ideal Pauli x and z rotations, which are universal for single-qubit gates, can be generated by two or three propagators. In addition, the magnitude of detuning fluctuation can be estimated based on the exact solution. | es_ES |
dc.description.sponsorship | We acknowledge grant support from the Spanish MINECO/FEDER Grants FIS2015-69983-P, the Basque Government Grant IT986-16 and UPV/EHU UFI 11/55. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Nature | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/FIS2015-69983-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 computation | es_ES |
dc.subject | electron-spin | es_ES |
dc.subject | fidelity | es_ES |
dc.subject | gate | es_ES |
dc.title | An Exact Approach to Elimination of Leakage in a Qubit Embedded in a Three-level System | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://www.nature.com/articles/s41598-019-47479-9#rightslink | es_ES |
dc.identifier.doi | 10.1038/s41598-019-47479-9 | |
dc.departamentoes | Física teórica e historia de la ciencia | es_ES |
dc.departamentoeu | Fisika teorikoa eta zientziaren historia | es_ES |
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