arXiv:quant-ph/0012071AbstractReferencesReviewsResources
Tomography of Quantum Operations
Published 2000-12-14Version 1
Quantum operations describe any state change allowed in quantum mechanics, including the evolution of an open system or the state change due to a measurement. In this letter we present a general method based on quantum tomography for measuring experimentally the matrix elements of an arbitrary quantum operation. As input the method needs only a single entangled state. The feasibility of the technique for the electromagnetic field is shown, and the experimental setup is illustrated based on homodyne tomography of a twin-beam.
Comments: Submitted to Phys. Rev. Lett. 2 eps + 1 latex figures
Journal: Phys. Rev. Lett. vol. 86, pag. 4195 (2001)
Categories: quant-ph
Keywords: state change, arbitrary quantum operation, experimental setup, electromagnetic field, open system
Tags: journal article
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