We report the development of a photon-number-resolving detector based on a fiber-optical setup and a pair of standard avalanche photodiodes. The detector is capable of resolving individual photon numbers and operates on the well-known principle by which a single-mode input state is split into a large number (eight) of output modes. We reconstruct the photon statistics of weak coherent input light from experimental data and show that there is a high probability of inferring the input photon number from a measurement of the number of detection events on a single run.
© 2003 Optical Society of America
(030.5260) Coherence and statistical optics : Photon counting
(040.5570) Detectors : Quantum detectors
(060.2380) Fiber optics and optical communications : Fiber optics sources and detectors
(270.5290) Quantum optics : Photon statistics
Daryl Achilles, Christine Silberhorn, Cezary Śliwa, Konrad Banaszek, and Ian A. Walmsley, "Fiber-assisted detection with photon number resolution," Opt. Lett. 28, 2387-2389 (2003)