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Optimal quantum tomography of permutationally invariant qubits
KTH, School of Engineering Sciences (SCI), Applied Physics, Quantum Electronics and Quantum Optics, QEO.ORCID iD: 0000-0002-2082-9583
2013 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 87, no 1, 012109- p.Article in journal (Refereed) Published
Abstract [en]

Mutually unbiased bases determine an optimal set of measurements to extract complete information about the quantum state of a system. However, quite often a priori information about the state exists, making some of the measurement bases superfluous. This is, for example, the case when multiqubit states belong to the permutationally invariant subspace. In this paper we derive the minimal sets of mutually unbiased bases needed to tomographically reconstruct such states.

Place, publisher, year, edition, pages
2013. Vol. 87, no 1, 012109- p.
Keyword [en]
Finite Hilbert-Space, State Tomography, Systems, Light
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-117993DOI: 10.1103/PhysRevA.87.012109ISI: 000313422700002Scopus ID: 2-s2.0-84872331116OAI: oai:DiVA.org:kth-117993DiVA: diva2:604441
Funder
Swedish Research Council, 621-2011-4575
Note

QC 20130211

Available from: 2013-02-11 Created: 2013-02-08 Last updated: 2017-12-06Bibliographically approved

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Björk, Gunnar

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