@inproceedings{6e9b09fc29544272bc7a0efad411ece0,
title = "Using interaction-based readouts to approach the ultimate limit of detection noise robustness for quantum-enhanced metrology in collective spin systems",
abstract = "We consider the role of detection noise in quantum-enhanced metrology in collective spin systems, and derive a fundamental bound for the maximum obtainable sensitivity for a given level of added detection noise. We then present an interaction-based readout utilising the commonly used one-axis twisting scheme that approaches this bound for states generated via several commonly considered methods of generating quantum enhancement, such as one-axis twisting, two-axis counter-twisting, twist-and-turn squeezing, quantum non-demolition measurements, and adiabatically scanning through a quantum phase transition. We demonstrate that this method performs significantly better than other recently proposed interaction-based readouts. These results may help provide improved sensitivity for quantum sensing devices in the presence of unavoidable detection noise.",
keywords = "Atom interferometry, Quantum metrology",
author = "Haine, {Simon A.} and Ruvi Lecamwasam and Joseph Hope",
note = "Publisher Copyright: {\textcopyright} 2019 SPIE CCC.; Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology 2019 ; Conference date: 02-02-2019 Through 07-02-2019",
year = "2019",
doi = "10.1117/12.2511835",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Shahriar, {Selim M.} and Jacob Scheuer",
booktitle = "Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology",
address = "United States",
}