Robustness of raw quantum tomography

Authors :: Giuseppe Florio
G. Marmo
Manuel Asorey
E. C. G. Sudarshan
Paolo Facchi
Vladimir I. Man’ko
Saverio Pascazio
M., Asorey
P., Facchi
G., Florio
Man'Ko, V. I.
Marmo, Giuseppe
S., Pascazio
Sudarshan, E. C. G.
Source :: Physics Letters A. 375:861-866
Publication Year :: 2011
Publisher :: Elsevier BV, 2011.
Abstract: We scrutinize the effects of non-ideal data acquisition on the homodyne tomograms of photon quantum states. The presence of a weight function, schematizing the effects of the finite thickness of the probing beam or equivalently noise, only affects the state reconstruction procedure by a normalization constant. The results are extended to a discrete mesh and show that quantum tomography is robust under incomplete and approximate knowledge of tomograms.<br />Comment: 7 pages, 1 figure, published version