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NONLINEAR INTERFEROMETRY

Measure in circles

Nature Physics volume 18, pages 124–125 (2022)Cite this article

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Entanglement can provide an extra boost in precision, but entangled states are hard to detect. A recent experiment solves this problem by letting the entangling dynamics come full circle — or not, depending on the subtle perturbation to be sensed.

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Fig. 1: Linear and SU(1,1) interferometry.

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Authors and Affiliations

  1. Department of Physics, Stanford University, Stanford, CA, USA

    Philipp Kunkel & Monika Schleier-Smith

  2. SLAC National Accelerator Laboratory, Menlo Park, CA, USA

    Philipp Kunkel

Authors
  1. Philipp Kunkel
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  2. Monika Schleier-Smith
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Correspondence to Monika Schleier-Smith.

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The authors declare no competing interests.

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Kunkel, P., Schleier-Smith, M. Measure in circles. Nat. Phys. 18, 124–125 (2022). https://doi.org/10.1038/s41567-021-01500-z

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