Artículo
Probing the limits of correlations in an indivisible quantum system
Autor/es | Malinowski, Maciej
Zhang, Chi Leupold, Florian Cabello Quintero, Adán Alonso, J Home, Jonathan |
Departamento | Universidad de Sevilla. Departamento de Física Aplicada II |
Fecha de publicación | 2018-11 |
Fecha de depósito | 2020-06-30 |
Resumen | We employ a trapped ion to study quantum contextual correlations in a single qutrit using the 5-observable Klyachko,Can,Binicio˘glu,andShumovskyinequality,whichisarguablythemostfundamentalnoncontextuality inequality for ... We employ a trapped ion to study quantum contextual correlations in a single qutrit using the 5-observable Klyachko,Can,Binicio˘glu,andShumovskyinequality,whichisarguablythemostfundamentalnoncontextuality inequality for testing quantum mechanics (QM). We quantify the effect of systematics in our experiment by purposely scanning the degree of signaling between measurements, which allows us to place realistic bounds on the nonclassicality of the observed correlations. Our results violate the classical bound for this experiment by up to 25 standard deviations, while being in agreement with the QM limit. In order to test the prediction of QM that the contextual fraction increases with the number of observables, we gradually increase the complexity of our measurements from 5 up to 121 observables. We find stronger-than-classical correlations in all prepared scenarios up to 101 observables, beyond which experimental imperfections blur the quantum-classical divide. |
Agencias financiadoras | Swiss National Science Foundation Office of the Director of National Intelligence Intelligence Advanced Research Projects Activity U.S. Army Research Office |
Cita | Malinowski, M., Zhang, C., Leupold, F., Cabello Quintero, A., Alonso, J. y Home, J. (2018). Probing the limits of correlations in an indivisible quantum system. Physical Review A, 98 (5), 050102-1-050102-6. |
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