info:eu-repo/semantics/article
Optimal common resource in majorization-based resource theories
Fecha
2019-08Registro en:
Bosyk, Gustavo Martin; Bellomo, Guido; Holik, Federico Hernán; Freytes, H.; Sergioli, Giuseppe; Optimal common resource in majorization-based resource theories; IOP Publishing; New Journal of Physics; 21; 8; 8-2019; 083028-083043
1367-2630
CONICET Digital
CONICET
Autor
Bosyk, Gustavo Martin
Bellomo, Guido
Holik, Federico Hernán
Freytes, H.
Sergioli, Giuseppe
Resumen
We address the problem of finding the optimal common resource for an arbitrary family of target states in quantum resource theories based on majorization, that is, theories whose conversion law between resources is determined by a majorization relationship, such as it happens with entanglement, coherence or purity. We provide a conclusive answer to this problem by appealing to the completeness property of the majorization lattice. We give a proof of this property that relies heavily on the more geometric construction provided by the Lorenz curves, which allows to explicitly obtain the corresponding infimum and supremum. Our framework includes the case of possibly non-denumerable sets of target states (i.e. targets sets described by continuous parameters). In addition, we show that a notion of approximate majorization, which has recently found application in quantum thermodynamics, is in close relation with the completeness of this lattice. Finally, we provide some examples of optimal common resources within the resource theory of quantum coherence.