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arXiv · 1612.06804

Quantum metrology at the limit with extremal Majorana constellations

F. Bouchard·P. de la Hoz·G. Bjork·R. W. Boyd·M. Grassl·Z. Hradil·E. Karimi·A. B. Klimov·G. Leuchs·J. Rehacek·L. L. Sanchez-Soto
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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.

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F. Bouchard, P. de la Hoz, G. Bjork, R. W. Boyd, M. Grassl, Z. Hradil, E. Karimi, A. B. Klimov, G. Leuchs, J. Rehacek, L. L. Sanchez-Soto. 2016-12-20. Quantum metrology at the limit with extremal Majorana constellations. https://doi.org/10.1364/optica.4.001429

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