Descriptions in quantum mechanics

Russell's theory of descriptions depends essentially on the concept of identity, in particular to eliminate definite descriptions by contextual definitions. But quantum objects, according to a possible metaphysical interpretation I shall assume without discussion here, seem not to satisfy the standard theory of identity, and do not have individuality in a sense. Even so, physicists refer informally to both 'a quantum so-and-so' and, worst, to 'the quantum so-and-so', as if these expressions were something like descriptions. In this article, we sketch a possible theory of `quantum (definite) descriptions' using a weaker concept of indiscernibility (or indistinguishability), and advance some consequences such a theory may have for the discussions on the logical foundations of quantum theory.