Interferometric sensing of the tilt angle of a Gaussian beam
S. P. Walborn, G. H. Aguilar, Pablo L. Saldanha, L. Davidovich, R. L. de Matos Filho · Physical Review Research · 2020
The authors investigate interferometric methods for estimating the mechanical tilt angle of an object, using quantum metrology. The paper shows that these schemes provide a precision gain that arises from the initial transverse displacement of the beam.