Simultaneous tracking of spin angle and amplitude beyond classical limits

Giorgio Colangelo (), Ferran Martin Ciurana, Lorena C. Bianchet, Robert J. Sewell and Morgan W. Mitchell ()
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Giorgio Colangelo: ICFO—Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology
Ferran Martin Ciurana: ICFO—Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology
Lorena C. Bianchet: ICFO—Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology
Robert J. Sewell: ICFO—Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology
Morgan W. Mitchell: ICFO—Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology

Nature, 2017, vol. 543, issue 7646, 525-528

Abstract: Simultaneous precise measurement of the non-commuting observables spin angle and spin amplitude is achieved by directing the error due to quantum measurement back-action into an unmeasured spin component.

Date: 2017
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DOI: 10.1038/nature21434

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