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Quantum metrology at the limit with extremal Majorana constellations

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Grassl,  M.
Quantumness, Tomography, Entanglement, and Codes, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Leuchs,  G.
Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Sanchez-Soto,  L. L.
Quantumness, Tomography, Entanglement, and Codes, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;
Univ Complutense, Dept Opt, Fac Phys, Complutense University of Madrid;

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Citation

Bouchard, F., de la Hoz, P., Bjork, G., Boyd, R. W., Grassl, M., Hradil, Z., et al. (2017). Quantum metrology at the limit with extremal Majorana constellations. OPTICA, 4(11), 1429-1432. doi:10.1364/OPTICA.4.001429.


Cite as: http://hdl.handle.net/21.11116/0000-0000-8012-A
Abstract
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. (C) 2017 Optical Society of America.