Optimizing the signal-to-noise ratio of a beam-deflection measurement with interferometric weak values

By David J. Starling, P. B. Dixon, A. Jordan, John C. Howell. 2009

154 citations recorded by the source corpus.

The amplification obtained using weak values is quantified through a detailed investigation of the signal-to-noise ratio for an optical beam-deflection measurement. We show that for a given deflection, input power and beam radius, the use of interferometric weak values allows one to obtain the optimum signal-to-noise ratio using a coherent beam. This method has the advantage of reduced technical noise and allows for the use of detectors with a low saturation intensity. We report on an experiment which improves the signal-to-noise ratio for a beam-deflection measurement by a factor of 54 when compared to a measurement using the same beam size and a quantum-limited detector.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics, Statistics and Probability

View Paper: https://www.semanticscholar.org/paper/a674f421061e2f42d2a073b6fb0597cfdd5b726a

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Nonperturbative theory of weak pre-and post-selected measurements (2011, methodology): “Note, however, that if one takes into account the total ensemble, the amplification cannot increase the quantum SNR; correspondingly, the latter is the same in weak PPS and standard measurements [90,94] (see Section 6.”