Tomography of Quantum Operations

G. M. D’Ariano; P. Lo Presti

Laser 2001 - World of Photonics 15th International Conference on Lasers and Electrooptics in Europe
Technical Digest Series (Optica Publishing Group, 2001),
paper PPE311

Tomography of Quantum Operations

G. M. D’Ariano and P. Lo Presti

The European Conference on Lasers and Electro-Optics 2001

Munich Germany
18–22 June 2001
ISBN:

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Parametric Processes and Entanglement I (PPE)

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G. M. D’Ariano and P. Lo Presti, "Tomography of Quantum Operations," in Laser 2001 - World of Photonics 15th International Conference on Lasers and Electrooptics in Europe, Technical Digest Series (Optica Publishing Group, 2001), paper PPE311.

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Abstract

The most general possible state change in quantum mechanics is described in the framework of quantum operations. Here, input and output states are connected via the map The quantum operation $ℰ$ is a linear, trace-decreasing map that preserves positivity [more precisely the map must be completely positive (CP)].

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