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Quantum metrology at the limit with extremal Majorana constellations
KTH, School of Engineering Sciences (SCI), Applied Physics, Quantum Electronics and Quantum Optics, QEO.
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2017 (English)In: Operator Theory: Advances and Applications, ISSN 1004-4469, E-ISSN 2334-2536, Vol. 4, no 11, p. 1429-1432Article in journal (Refereed) Published
Abstract [en]

Quantum metrology allows for a tremendous boost in the accuracy of measurement of diverse physical parameters. The estimation of a rotation constitutes a remarkable example of this quantum-enhanced precision. The recently introduced Kings of Quantumness are especially germane for this task when the rotation axis is unknown, as they have a sensitivity independent of that axis and they achieve a Heisenberg-limit scaling. Here, we report the experimental realization of these states by generating up to 21-dimensional orbital angular momentum states of single photons, and confirm their high metrological abilities.

Place, publisher, year, edition, pages
Optical Society of America, 2017. Vol. 4, no 11, p. 1429-1432
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Other Engineering and Technologies
Identifiers
URN: urn:nbn:se:kth:diva-219502DOI: 10.1364/OPTICA.4.001429ISI: 000415882200021Scopus ID: 2-s2.0-85035152397OAI: oai:DiVA.org:kth-219502DiVA, id: diva2:1163552
Note

QC 20171207

Available from: 2017-12-07 Created: 2017-12-07 Last updated: 2017-12-07Bibliographically approved

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