| dc.contributor.author | Montenegro V., Eremeev V., Mundarain D., Orszag M. | es_CL |
| dc.contributor.author | Coto, Raúl [Universidad Mayor, Chile] | es_CL |
| dc.date.accessioned | 2020-08-12T14:11:55Z | |
| dc.date.accessioned | 2020-08-12T18:13:26Z | |
| dc.date.available | 2020-08-12T14:11:55Z | |
| dc.date.available | 2020-08-12T18:13:26Z | |
| dc.date.issued | 2017 | es_CL |
| dc.identifier.citation | Coto, R., Montenegro, V., Eremeev, V., Mundarain, D., & Orszag, M. (2017). The power of a control qubit in weak measurements. Scientific reports, 7(1), 1-11. | es_CL |
| dc.identifier.issn | 2045-2322 | es_CL |
| dc.identifier.uri | https://www.nature.com/articles/s41598-017-05370-5.pdf | es_CL |
| dc.identifier.uri | https://doi.org/10.1038/s41598-017-05370-5 | es_CL |
| dc.identifier.uri | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5527045/ | es_CL |
| dc.identifier.uri | http://repositorio.umayor.cl/xmlui/handle/sibum/6914 | |
| dc.description.abstract | In the late 80 s, a curious effect suggested by Aharanov et al. was found to lead to an anomalous amplification based on quantum measurements of weakly coupled systems. In this paper, we investigate the quantum control of the weak value amplification of a qubit system coupled to a meter. For the qubit system, the coupling occurs via a second non-interacting qubit, initially quantum correlated with the first one. We show that for weak measurements, the control can be remotely realized via the post-selected state of the second qubit or the degree of squeezing of the meter. In our study of the quantum control of the amplification, we can easily manipulate the degree of quantum correlations between the initially correlated qubits. We find that the degree of entanglement has no effect on the quantum control of the amplification. However, we also found a clear connection between the amplification and quantum discord like measurements as well as classical correlations between the qubits. Finally, we suggest an application of the amplification control on the enhancement of the quantum measurement accuracy, e.g. measuring the relative phase of the post-selected control qubit in a more precise way, as opposed to the non-amplified case. | es_CL |
| dc.description.sponsorship | M.O. and V.E. acknowledge the financial support of the projects Fondecyt #1140994 and Conicyt-PIA anillo ACT-1112 "Red de analisis estocastico y aplicaciones". R.C. and V.M. acknowledge the financial support of the projects Fondecyt Postdoctorado #3160154 and #3160700, respectively. | es_CL |
| dc.format.extent | Artículo original | |
| dc.language.iso | en | es_CL |
| dc.publisher | NATURE PUBLISHING GROUP | es_CL |
| dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Chile | |
| dc.source | Scientific Reports, 2017. 7(1), ART. N° 6351 | |
| dc.title | The power of a control qubit in weak measurements | es_CL |
| dc.type | Artículo o paper | es_CL |
| umayor.facultad | Facultad de Ciencias | |
| umayor.indizador | COT | |
| umayor.politicas.sherpa/romeo | RoMEO GREEN journal (Se puede archivar el pre-print y el post-print o versión de editor/PDF). Disponible en: http://sherpa.ac.uk/romeo/index.php | es_CL |
| umayor.indexado | WOS | es_CL |
| umayor.indexado | SCOPUS | es_CL |
| dc.identifier.doi | DOI: 10.1038/s41598-017-05370-5 | es_CL] |
| umayor.indicadores.wos-(cuartil) | Q1 | es_CL |
| umayor.indicadores.scopus-(scimago-sjr) | 1,34 | es_CL |
| umayor.indicadores.scopus-(scimago-sjr) | ÍNDICE H: 52 | es_CL |