华东师范大学学报（自然科学版）Issue(3)：19-25,7.DOI:10.3969/j.issn.1000-5641.2025.03.003
压缩态辅助的量子非破坏性弱力测量
Squeezing-assisted quantum non-demolition measurements theory of weak-force detection
摘要
Abstract
In quantum precision metrology,simultaneously weakening two types of noise based on quantum mechanisms,i.e.,shot noise and measurement back-action noise,is challenging.Thus,the measurement precision is limited by the standard quantum limit(SQL).Two commonly used methods for surpassing this limit are to employ quantum squeezed light fields or quantum non-demolition(QND)measurements.This paper proposes an approach that combines these two methods within a typical cavity optomechanical weak-force-detection system.Compared with solely performing QND measurements,this integrated method surpasses the SQL significantly,thereby achieving superior measurement precision.关键词
量子精密测量/腔光力学/量子非破坏性测量/压缩态Key words
quantum precision metrology/cavity optomechanics/quantum non-demolition measurement/squeezed state分类
物理学引用本文复制引用
贾蕊旗,韦展鹏,张可烨..压缩态辅助的量子非破坏性弱力测量[J].华东师范大学学报（自然科学版）,2025,(3):19-25,7.基金项目
国家自然科学基金(11974116) （11974116）
中央高校基本科研业务费 （）
