CONICET | Buscador de Institutos y Recursos Humanos

The basis of what is known today as Standard Quantum Mechanics (SQM) was established by Paul Dirac and John von Neumann during the early 1930s. According to this view, QM talks about a microscopic realm constituted by elementary particles represented by quantum superpositions of many states which ``collapse´´ when observed in the act of measurement. One of the major attacks against this view came in the year 1935 when both Albert Einstein and Erwin Schr"odinger discussed what they called ``entanglement´´ ({it Verschr"ankung}, in German). Neither he critical arguments of the two rebels nor together their concepts, were not considered by a physicist community which understood that Niels Bohr had already solved everything. Since then, entanglement remained buried for almost half a century until, due to Alain Aspect´s experiments, physicists begun to recognize the relevance of quantum correlations for the processing of information. During the 1990s, with the rise of the fields of Foundations of QM and Quantum Information, entanglement was introduced as a new chapter of SQM itself. In this work we attempt to address some of the difficulties present in such contemporary understanding of entanglement as related to the existence of `quantum particles´ and their `separability´. We will then turn our attention to two recent approaches which might offer an interesting way out of this conundrum by trying to escape the notion of `quantum system´ itself. While the first, called device-independent approach, proposes an (anti-metaphysical) operational-linguistic scheme which reminds us of Bohr´s interpretation; the second approach which might be linked to the works of Einstein, Heisenberg and Puali, takes an essentially creative metaphysical path by seeking to develop a new (non-classical) representation of entanglement grounded on the potential coding of {it intensive} and {it effective} relations.