caa a22 4500 530098954 20181217030327.0 cr unu---uuuuu 181026e20150625xx s 000 0 eng 10.3929/ethz-b-000102382 doi 10.1038/srep11637 doi (ETHRESEARCH)oai:www.research-collection.ethz.ch:20.500.11850/102382 Su Hong-Yi Demonstrating quantum contextuality of indistinguishable particles by a single family of noncontextuality inequalities [Elektronische Daten] [Hong-Yi Su, Jing-Ling Chen, Yeong-Cherng Liang] Sci Rep Open access ethresearch Quantum theory has the intriguing feature that is inconsistent with noncontextual hidden variable models, for which the outcome of a measurement does not depend on which other compatible measurements are being performed concurrently. While various proofs of such contextual behavior of quantum systems have been established, relatively little is known concerning the possibility to demonstrate this intriguing feature for indistinguishable particles. Here, we show in a simple and systematic manner that with projective measurements alone, it is possible to demonstrate quantum contextuality for such systems of arbitrary Hilbert space dimensions, including those corresponding to a qubit. Our demonstration is applicable to a single fermion as well as multiple fermions, and thus also a composite boson formed from an even number of fermions. In addition, our approach gives a clear demonstration of the intimate connection between complementarity and contextuality, two seemingly unrelated aspects of quantum theory. Creative Commons Attribution 4.0 International http://creativecommons.org/licenses/by/4.0 ethresearch Quantum information ethresearch Quantum mechanics ethresearch Theoretical physics ethresearch Chen Jing-Ling joint author Liang Yeong-Cherng joint author Scientific Reports London : Nature Publishing Group 5, p. 11637 2045-2322 http://hdl.handle.net/20.500.11850/102382 text/html WWW-Backlink auf das Repository (Open access) 1 Journal Article ethresearch ETHRESEARCH 856 40 http://hdl.handle.net/20.500.11850/102382 text/html WWW-Backlink auf das Repository (Open access) ETHRESEARCH 100 1- Su Hong-Yi ETHRESEARCH 700 1- Chen Jing-Ling joint author ETHRESEARCH 700 1- Liang Yeong-Cherng joint author ETHRESEARCH 773 0- Scientific Reports London : Nature Publishing Group 5, p. 11637 2045-2322 BK010053 XK010053 XK010000 ETHRESEARCH ETHRESEARCH ETHRESEARCH Journal Article Open access