Setup uses a weak-value amplification scheme (center) to detect light signals from the laser (left) by overcoming the saturation and noise-floor limitations of the detector (right).

From the article:

Approaching Quantum-Limited Metrology with Imperfect Detectors by Using Weak-Value Amplification
Liang Xu, Zexuan Liu, Animesh Datta, George C. Knee, Jeff S. Lundeen, Yan-qing Lu, and Lijian Zhang
Phys. Rev. Lett. 125, 080501 (2020)

View Issue Table of Contents