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arXiv · 1809.04816

Tomography from collective measurements

A. Muñoz·A. B. Klimov·M. Grassl·L. L. Sanchez-Soto
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Abstract

We discuss the tomography of $N$-qubit states using collective measurements. The method is exact for symmetric states, whereas for not completely symmetric states the information accessible can be arranged as a mixture of irreducible SU(2) blocks. For the fully symmetric sector, the reconstruction protocol can be reduced to projections onto a canonically chosen set of pure states.

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A. Muñoz, A. B. Klimov, M. Grassl, L. L. Sanchez-Soto. 2018-09-13. Tomography from collective measurements. https://doi.org/10.1007/s11128-018-2045-0

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