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We present such a scenario that involves broadcasting the local subsystems of a single-copy of a bipartite quantum state to multiple parties, and use the scenario to study the nonlocal properties of the two-qubit isotropic state:\u03c1<\/mml:mi>\u03b1<\/mml:mi><\/mml:msub>=<\/mml:mo>\u03b1<\/mml:mi>|<\/mml:mo><\/mml:mrow>\u03a6<\/mml:mi>+<\/mml:mo><\/mml:msup>\u27e9<\/mml:mo>\u27e8<\/mml:mo>\u03a6<\/mml:mi>+<\/mml:mo><\/mml:msup>|<\/mml:mo><\/mml:mrow>+<\/mml:mo>(<\/mml:mo>1<\/mml:mn>\u2212<\/mml:mo>\u03b1<\/mml:mi>)<\/mml:mo>1<\/mml:mn><\/mml:mrow>4<\/mml:mn><\/mml:mfrac>.<\/mml:mo><\/mml:math>We present two main results, considering that Nature allows for (i) the most general no-signalling correlations, and (ii) the most general quantum correlations at the level of any hidden variable theory. We show that the state does not admit a local hidden variable description for \u03b1<\/mml:mi>><\/mml:mo>0.559<\/mml:mn><\/mml:math> and \u03b1<\/mml:mi>><\/mml:mo>1<\/mml:mn>2<\/mml:mn><\/mml:mfrac><\/mml:math>, in cases (i) and (ii) respectively, which in both cases provides a device-independent certification of the entanglement of the state. These bounds are significantly lower than the previously best-known bound of 0.697<\/mml:mn><\/mml:math> for both Bell nonlocality and device-independent entanglement certification using a single copy of the state. Our results show that strong examples of non-classicality are possible with a small number of resources.<\/jats:p>","DOI":"10.22331\/q-2021-07-13-499","type":"journal-article","created":{"date-parts":[[2021,7,13]],"date-time":"2021-07-13T14:45:23Z","timestamp":1626187523000},"page":"499","update-policy":"http:\/\/dx.doi.org\/10.22331\/q-crossmark-policy-page","source":"Crossref","is-referenced-by-count":7,"title":["Single-copy activation of Bell nonlocality via broadcasting of quantum states"],"prefix":"10.22331","volume":"5","author":[{"given":"Joseph","family":"Bowles","sequence":"first","affiliation":[{"name":"ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain"}]},{"given":"Flavien","family":"Hirsch","sequence":"additional","affiliation":[{"name":"Institute for Quantum Optics and Quantum Information (IQOQI), Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria"}]},{"given":"Daniel","family":"Cavalcanti","sequence":"additional","affiliation":[{"name":"ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain"}]}],"member":"9598","published-online":{"date-parts":[[2021,7,13]]},"reference":[{"key":"0","doi-asserted-by":"publisher","unstructured":"J. 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