---
abstract: 'Entangled sensors have been attracting a lot of attention recently because they can achieve the sensitivity beyond that of the classical sensors. To exploit entanglement as a resource, it is important to understand the effect of noise because the entangled state is fragile against noise. Here, we provide a Nuclear Magnetic Resonance (NMR) model of an entangled sensor under engineered noise: one can implement an entangled sensor under various noisy environments. In particular, we experimentally investigate the performance of the entangled sensor under the effect of time-inhomogeneous noisy environment with which the entangled sensor holds potential to beat the classical sensors. Our “entangled sensor” consists of a multi-spin molecule solved in isotropic liquid, and we can perform the quantum sensing by using NMR techniques.'
author:
- Le Bin Ho
- Yuichiro Matsuzaki
- Masayuki Matsuzaki
- Yasushi Kondo
bibliography:
- 'bib18Oct.bib'
title: Nuclear Magnetic Resonance model of an entangled sensor under noise
---

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Introduction
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Quantum sensing has been attracting a lot of attention recently as an application of quantum mechanics like quantum information technology [@Nielsen2000] because one may achieve the sensitivity and precision beyond what is possible classically. Quantum sensing may be categorized into three according 