Quantum metrology at the limit with extremal Majorana constellations
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2017
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Optical Soc Amer
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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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© 2017 Optical Society of America.
Artículo escrito por más de 10 autores.
Funding: Natural Sciences and Engineering Research Council of Canada NSERC); Canada Foundation for Innovation (CFI); Technologicka Agentura Ceske Republiky (TACR) (TE01020229); Grantova Agentura Ceske Republiky (GACR) (15-03194S); Ministerio de Economia y Competitividad (MINECO) FIS2015-67963-P)