Here we describe a laboratory procedure by which we have increased the resolution of a measurement of the position of an optical component by a factor of 16. The factor of 16 arises from a four-fold quantum enhancement through the use of an N = 4 N00N state and a four-fold classical enhancement from a quadruple pass through a prism pair. The possibility of achieving supersensitivity using this method is discussed. © 2013 Optical Society of America.
Publication Source (Journal or Book title)
Shin, H., Magaña-Loaiza, O., Malik, M., O'Sullivan, M., & Boyd, R. (2013). Enhancing entangled-state phase estimation by combining classical and quantum protocols. Optics Express, 21 (3), 2816-2822. https://doi.org/10.1364/OE.21.002816