Accuracy of minimal and optimal qubit tomography for finite-length experiments

Details Accuracy of minimal and optimal qubit tomography for finite-length experiments Accuracy of minimal and optimal qubit tomography for finite-length experiments

2008-07-07

arxiv.org/abs/0807.0991v1

Physics

Quantum Physics

5 pages, 5 figures

Scientific paper

Practical quantum state tomography is usually performed by carrying out repeated measurements on many copies of a given state. The accuracy of the reconstruction depends strongly on the dimensionality of the system and the number of copies used for the measurements. We investigate the accuracy of an experimental implementation of a minimal and optimal tomography scheme for one- and two-qubit states encoded in the polarization of photons. A suitable statistical model for the attainable accuracy is introduced.

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