%0 Journal Article %T Quantum system identification %A Maxim Raginsky %J Physics %D 2003 %I arXiv %X We formulate and study, in general terms, the problem of quantum system identification, i.e., the determination (or estimation) of unknown quantum channels through their action on suitably chosen input density operators. We also present a quantitative analysis of the worst-case performance of these schemes. %U http://arxiv.org/abs/quant-ph/0306008v1