Experimental super resolved phase measurements at the shot noise limit
Lior Cohen, Liat Dovrat, D. Istrati, H. S. Eisenberg · 2013
Using photon-number resolving detectors, we directly measure the parity of coherent states in a Mach-Zehnder interferometer. Phases are super resolved by a factor of 150 and shot noise limited measurements are demonstrated with 200 photons.