{"id":1235,"date":"2021-09-13T12:52:10","date_gmt":"2021-09-13T10:52:10","guid":{"rendered":"https:\/\/webs.uab.cat\/giq\/seminar\/testing-the-quantumness-of-gravity-via-a-mathematical-theory-of-quantum-benchmarks\/"},"modified":"2021-09-13T12:52:10","modified_gmt":"2021-09-13T10:52:10","slug":"testing-the-quantumness-of-gravity-via-a-mathematical-theory-of-quantum-benchmarks","status":"publish","type":"seminar","link":"https:\/\/webs.uab.cat\/giq\/seminar\/testing-the-quantumness-of-gravity-via-a-mathematical-theory-of-quantum-benchmarks\/","title":{"rendered":"Testing the quantumness of gravity via a mathematical theory of quantum benchmarks"},"content":{"rendered":"<p>Given a system of massive quantum harmonic oscillators, how can we test whether their gravitational interaction is classical or quantum? Here we propose a general&nbsp;Gedankenexperiment to do so and benchmark it, i.e. we show how to determine the threshold beyond which one can claim that gravity behaves as a quantum interaction Hamiltonian&nbsp;instead of a classical field. The remarkable aspect of our approach is that it bypasses completely the problem of how a classical gravitational field may interact with the quantum&nbsp;oscillators. Using a delightfully simple trick from quantum information, we are able to give a bound that applies to all physically conceivable scenarios at once. We find that in a certain&nbsp;regime the best classical strategy introduces an error that grows linearly with time, with a coefficient that depends on the geometry of the system.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Given a system of massive quantum harmonic oscillators, how can we test whether their gravitational interaction is classical or quantum? Here we propose a general&nbsp;Gedankenexperiment to do so and benchmark it, i.e. we show how to determine the threshold beyond which one can claim that gravity behaves as a quantum interaction Hamiltonian&nbsp;instead of a classical [&hellip;]<\/p>\n","protected":false},"author":20,"featured_media":0,"template":"","class_list":["post-1235","seminar","type-seminar","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/seminar\/1235","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/seminar"}],"about":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/types\/seminar"}],"author":[{"embeddable":true,"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/users\/20"}],"wp:attachment":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/media?parent=1235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}