Multimode metrology via scattershot sampling
Joshua J. Guanzon, Austin P. Lund, Timothy C. Ralph · Physical Review A · 2021
The authors study the application of scattershot single-photon sources to multimode quantum metrology by investigating three different kinds of interferometers. They show that all three of them give the same average amount of information, but two of the three need to be in specific input configurations while the third one always beats the classical limit regardless of the input configuration.