Work

Enhancing Parameter Estimation Precision in a Dissipative Environment with Two‐Photon Driving

Year: 2020

Type: article

Abstract: The frequency estimation of an optical cavity field suffering from an unavoidable dissipative environment is investigated. Generally, dissipative noise significantly reduces the precision. Here, it is found that two‐photon driving can improve measurement precision by resisting the noise. Moreover, over a long duration, the frequency uncertainty can be minimized with the right magnitude of the parametric two‐photon drive, which is in sharp contrast to the uncertainty tending to infinity without two‐photon driving. The results show that two‐photon driving can achieve ultrasensitive measurement in a dissipative environment under the long‐encoding‐time condition.

Source: Annalen der Physik

DOI: 10.1002/andp.201900387

Authors: Dong Xie, Chunling Xu

Institution: Guilin University of Aerospace Technology

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funders: National Natural Science Foundation of China, Natural Science Foundation of Guangxi Province

Awards: G3957788591, G998985940