IFLP 13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
On the metric character of the quantum Jensen-Shannon divergence
Autor/es:
P.W.LAMBERTI; A.P.MAJTEY; A.BORRAS; M.CASAS; A. PLASTINO
Revista:
PHYSICAL REVIEW A - ATOMIC, MOLECULAR AND OPTICAL PHYSICS
Referencias:
Año: 2008 p. 52311 - 52317
ISSN:
1050-2947
Resumen:
In a recent paper, the generalization of the Jensen-Shannon divergence in the context of quantum theory has
been studied Majtey et al., Phys. Rev. A 72, 052310 2005. This distance between quantum states has shown
to verify several of the properties required for a good distinguishability measure. Here we investigate the
metric character of this distance. More precisely we show, formally for pure states and by means of a numerical
procedure for mixed states, that its square root verifies the triangle inequality.Majtey et al., Phys. Rev. A 72, 052310 2005. This distance between quantum states has shown
to verify several of the properties required for a good distinguishability measure. Here we investigate the
metric character of this distance. More precisely we show, formally for pure states and by means of a numerical
procedure for mixed states, that its square root verifies the triangle inequality.
