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Superactivation of Quantum Nonlocality Palazuelos Cabezón, Carlos 51-73 Capacity Física matemática In this Letter we show that quantum nonlocality can be superactivated. That is, one can obtain violations of Bell inequalities by tensorizing a local state with itself. In the second part of this work we study how large these violations can be. In particular, we show the existence of quantum states with very low Bell violation but such that five copies of them give very large violations. In fact, this gap can be made arbitrarily large by increasing the dimension of the states. UE Spanish project QUITEMAD Spanish project MINECO: ICMAT Severo Ochoa project "Juan de la Cierva'' program Depto. de Análisis Matemático y Matemática Aplicada Fac. de Ciencias Matemáticas TRUE pub 2023-06-20T03:38:23Z 2023-06-20T03:38:23Z 2012-11 journal article https://hdl.handle.net/20.500.14352/44124 0031-9007 10.1103/PhysRevLett.109.190401 eng MTM2011-26912 SEV-2011-0087 open access application/pdf American Physical Society