Sub-shot-noise quantum metrology with entangled identical particles
Quantum Physics
2010-02-26 v1 Other Condensed Matter
High Energy Physics - Theory
Abstract
The usual notion of separability has to be reconsidered when applied to states describing identical particles. A definition of separability not related to any a priori Hilbert space tensor product structure is needed: this can be given in terms of commuting subalgebras of observables. Accordingly, the results concerning the use of the quantum Fisher information in quantum metrology are generalized and physically reinterpreted.
Keywords
Cite
@article{arxiv.1001.3313,
title = {Sub-shot-noise quantum metrology with entangled identical particles},
author = {F. Benatti and R. Floreanini and U. Marzolino},
journal= {arXiv preprint arXiv:1001.3313},
year = {2010}
}
Comments
17 pages, LaTeX