dc.creator | Gigena, Nicolás Alejandro | |
dc.creator | Rossignoli, Raúl Dante | |
dc.date | 2016 | |
dc.date | 2023-06-15T14:41:27Z | |
dc.date.accessioned | 2023-07-15T10:51:40Z | |
dc.date.available | 2023-07-15T10:51:40Z | |
dc.identifier | http://sedici.unlp.edu.ar/handle/10915/154381 | |
dc.identifier | issn:1050-2947 | |
dc.identifier | issn:1094-1622 | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7493469 | |
dc.description | We propose an entropic measure of nonclassical correlations in general mixed states of fermion systems, based on the loss of information due to the unread measurement of the occupancy of single-particle states of a given basis. When minimized over all possible single-particle bases, the measure reduces to an entanglement entropy for pure states and vanishes only for states which are diagonal in a Slater determinant basis. The approach is also suitable for states having definite number parity yet not necessarily a fixed particle number, in which case the minimization can be extended to all bases related through a Bogoliubov transformation if quasiparticle mode measurements are also considered. General stationary conditions for determining the optimizing basis are derived. For a mixture of a general pure state with the maximally mixed state, a general analytic evaluation of the present measure and optimizing basis is provided, which shows that nonentangled mixed states may nonetheless exhibit a nonzero information loss. | |
dc.description | Quantum Information Research Group | |
dc.description | Instituto de Física La Plata | |
dc.format | application/pdf | |
dc.language | en | |
dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
dc.rights | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
dc.subject | Física | |
dc.subject | Entanglement measures | |
dc.subject | Quantum Information | |
dc.title | One-body information loss in fermion systems | |
dc.type | Articulo | |
dc.type | Articulo | |