Conditional and unconditional g((2))(0) measurements of a microstructure-fiber-based heralded single-photon source

Using photon pairs created via four-wave mixing in a microstructure fiber, we measure g((2))(0) of idler photons heralded by a signal photon to be well below one, and six times less than unconditional g((2))(0). (C)2008 Optical Society of America