Interferometers and Decoherence Matrices
Han, D. ; Kim, Y. S. ; Noz, Marilyn E.
arXiv, 0003044 / Harvested from arXiv
Text on arXiv
It is shown that the Lorentz group is the natural language for two-beam interferometers if there are no decoherence effects. This aspect of the interferometer can be translated into six-parameter representations of the Lorentz group, as in the case of polarization optics where there are two orthogonal components of one light beam. It is shown that there are groups of transformations which leave the coherency or density matrix invariant, and this symmetry property is formulated within the framework of Wigner's little groups. An additional mathematical apparatus is needed for the transition from a pure state to an impure state. Decoherence matrices are constructed for this process, and their properties are studied in detail. Experimental tests of this symmetry property are possible.
Publié le : 2000-03-13
Classification:  Quantum Physics,  High Energy Physics - Theory,  Mathematical Physics 
@article{0003044,
     author = {Han, D. and Kim, Y. S. and Noz, Marilyn E.},
     title = {Interferometers and Decoherence Matrices},
     journal = {arXiv},
     volume = {2000},
     number = {0},
     year = {2000},
     language = {en},
     url = {http://dml.mathdoc.fr/item/0003044}
}

Han, D.; Kim, Y. S.; Noz, Marilyn E. Interferometers and Decoherence Matrices. arXiv, Tome 2000 (2000) no. 0, . http://gdmltest.u-ga.fr/item/0003044/