Experimental quantum process tomography of non-trace-preserving maps

Year: 2010

Authors: Bongioanni I., Sansoni L., Sciarrino F., Vallone G., Mataloni P.

Autors Affiliation: Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy; Ist Nazl Ott INO CNR, I-50125 Florence, Italy; Museo Stor Fis, I-00184 Rome, Italy; Ctr Studi & Ric Enrico Fermi, I-00184 Rome, Italy.

Abstract: The ability of fully reconstructing quantum maps is a fundamental task of quantum information, in particular when coupling with the environment and experimental imperfections of devices are taken into account. In this context, we carry out a quantum process tomography approach for a set of non-trace-preserving maps. We introduce an operator P to characterize the state-dependent probability of success for the process under investigation. We also evaluate the result of approximating the process with a trace-preserving one.

Journal/Review: PHYSICAL REVIEW A

Volume: 82 (4)      Pages from: 42307-1  to: 42307-5

More Information: This work was supported by Finanziamento Ateneo 2009 of Sapienza Universita di Roma and FIRB Futuro in Ricerca-HYTEQ.
KeyWords: Fidelity
DOI: 10.1103/PhysRevA.82.042307

Citations: 54
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