@inproceedings{426a291cb0f140479accd7c066de9a2d,
title = "Estimation of the average of arbitrary unknown phase delays with Heisenberg-scaling precision",
abstract = "We show an estimation scheme which reaches the Heisenberg-scaling sensitivity in the estimation of the average of the optical phases along the two arms of a Mach-Zehnder interferometer, by using a single squeezed vacuum state and homodyne detection at a single output port. We show that, in order to achieve this quantum advantage, it is required only a classical prior knowledge about the two phases, namely obtainable with a classical estimation strategy with shot-noise limited precision.",
keywords = "Quantum Metrology, Heisenberg limit",
author = "Danilo Triggiani and Vincenzo Tamma",
year = "2022",
month = mar,
day = "2",
doi = "10.1117/12.2618306",
language = "English",
isbn = "9781510649033",
series = "Proceedings of SPIE",
publisher = "Society of Photo-Optical Instrumentation Engineers",
editor = "Jacob Scheuer and Shahriar, {Selim M.}",
booktitle = "Optical and Quantum Sensing and Precision Metrology II",
address = "United States",
note = "SPIE OPTO ; Conference date: 22-01-2022 Through 28-02-2022",
}