Ultra-high dynamic range quantum measurement retaining its sensitivity.

ABSTRACT: Quantum sensors are highly sensitive since they capitalise on fragile quantum properties such as coherence, while enabling ultra-high spatial resolution. For sensing, the crux is to minimise the measurement uncertainty in a chosen range within a given time. However, basic quantum sensing protocols cannot simultaneously achieve both a high sensitivity and a large range. Here, we demonstrate a non-adaptive algorithm for increasing this range, in principle without limit, for alternating-current field sensing, while being able to get arbitrarily close to the best possible sensitivity. Therefore, it outperforms the standard measurement concept in both sensitivity and range. Also, we explore this algorithm thoroughly by simulation, and discuss the T^-2 scaling that this algorithm appro

SUBMITTER: Herbschleb ED 

PROVIDER: S-EPMC7804307 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature