Micro-angle attitude measurement technology and research progress based on quantum weak value measurement

Due to the limitation of standard quantum limit (SQL), traditional laser interferometry based micro angle attitude measurement technology cannot further improve its measurement accuracy. Applying quantum weak value measurement technology to micro angle measurement will greatly improve its measurement accuracy. This article introduces the basic principle of quantum weak value measurement, and introduces the research progress in micro bit angle/displacement measurement using quantum weak value measurement technology in recent years. The future application trend of quantum weak measurement technology in micro angle is analyzed and prospected.