RT Journal Article T1 Superactivation of Quantum Nonlocality A1 Palazuelos Cabezón, Carlos AB 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. PB American Physical Society SN 0031-9007 YR 2012 FD 2012-11 LK https://hdl.handle.net/20.500.14352/44124 UL https://hdl.handle.net/20.500.14352/44124 LA eng NO UE NO Spanish project QUITEMAD NO Spanish project MINECO: ICMAT Severo Ochoa project NO "Juan de la Cierva'' program DS Docta Complutense RD 9 abr 2025