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Amplification of Angular Rotations Using Weak Measurements

Magaña-Loaiza, Omar S. and Mirhosseini, Mohammad and Rodenburg, Brandon and Boyd, Robert W. (2014) Amplification of Angular Rotations Using Weak Measurements. Physical Review Letters, 112 (20). Art. No. 200401. ISSN 0031-9007. doi:10.1103/physrevlett.112.200401.

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We present a weak measurement protocol that permits a sensitive estimation of angular rotations based on the concept of weak-value amplification. The shift in the state of a pointer, in both angular position and the conjugate orbital angular momentum bases, is used to estimate angular rotations. This is done by an amplification of both the real and imaginary parts of the weak-value of a polarization operator that has been coupled to the pointer, which is a spatial mode, via a spin-orbit coupling. Our experiment demonstrates the first realization of weak-value amplification in the azimuthal degree of freedom. We have achieved effective amplification factors as large as 100, providing a sensitivity that is on par with more complicated methods that employ quantum states of light or extremely large values of orbital angular momentum.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Rodenburg, Brandon0000-0003-2150-0576
Boyd, Robert W.0000-0002-1234-2265
Additional Information:© 2014 American Physical Society. (Received 10 February 2014; published 21 May 2014) We acknowledge discussions with J. Vornehm, G. Viza, J. Martinez-Rincon, J. C. Howell, and E. Karimi. This work was supported by DARPA, CERC, and CONACyT.
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Canada Research Chairs ProgramUNSPECIFIED
Consejo Nacional de Ciencia y Tecnología (CONACYT)UNSPECIFIED
Issue or Number:20
Classification Code:PACS numbers: 03.65.Ta, 42.25.Hz, 42.50.Ex, 42.50.Tx
Record Number:CaltechAUTHORS:20190628-110703526
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96827
Deposited By: George Porter
Deposited On:08 Jul 2019 21:19
Last Modified:16 Nov 2021 17:24

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