Creation of large-photon-number path entanglement conditioned on photodetection
Pieter Kok, Hwang Lee, Jonathan P. Dowling · Physical Review A · 2002
Large-photon-number path entanglement is an important resource for enhanced precision measurements and quantum imaging. We present a general constructive protocol to create any large-photon-number path-entangled state based on the conditional detection of single photons. The influence of imperfect detectors is considered and an asymptotic scaling law is derived.