Fiber-assisted detection with photon number resolution.
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.
Achilles
Daryl
D
Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UK. daryl.achilles@physics.ox.ac.uk
Silberhorn
Christine
C
Sliwa
Cezary
C
Banaszek
Konrad
K
Walmsley
Ian A
IA