Measurement-Dependent Erasure of Distinguishability for the Observation of Interference in an Unbalanced SU(1,1) Interferometer
Nan Huo, Liang Cui, Yunxiao Zhang, Wen Zhen Zhao, Xueshi Guo, Z.Y. Ou, Xiaoying Li · PRX Quantum · 2022
The temporal distinguishability in an unbalanced interferometer leads to the erasure of interference in the direct photodetection which can be recovered via amplitude measurement by homodyne detection.