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Tomography from collective measurements

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Muñoz, A. and Klimov, A. B. and Grassl, M. and Sánchez Soto, Luis Lorenzo (2018) Tomography from collective measurements. Quantum information processing, 17 (10). ISSN 1570-0755

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Official URL: http://dx.doi.org/10.1007/s11128-018-2045-0


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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.


Item Type:Article
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© 2018 Springer Nature Switzerland AG.
Open access funding provided by Max Planck Society. This work is partially supported by the Grant 254127 of CONACyT (Mexico). L. L. S. S. acknowledges the support of the Spanish MINECO (Grant FIS2015-67963-P).

Uncontrolled Keywords:Finite-dimensional spaces; Discrete coherent states; Quantum; Entanglement; System
Subjects:Sciences > Physics > Optics
ID Code:49969
Deposited On:28 Nov 2018 12:29
Last Modified:28 Nov 2018 12:49

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