Heralding Single Photons Without Spectral Factorability
arXiv:1008.2792 · doi:10.1103/PhysRevA.82.043826
Abstract
Recent efforts to produce single photons via heralding have relied on creating spectrally factorable two-photon states in order to achieve both high purity and high production rate. Through a careful multimode analysis, we find, however, that spectral factorability is not necessary. Utilizing single-mode detection, a similar or better performance can be achieved with non-factorable states. This conclusion rides on the fact that even when using a broadband filter, a single-mode measurement can still be realized, as long as the coherence time of the triggering photons exceeds the measurement window of the on/off detector.
7 pages, 5 figures
References in corpus (7)
- Heralded Generation of Ultrafast Single Photons in Pure Quantum States
- Photon pair-state preparation with tailored spectral properties by spontaneous four-wave mixing in photonic-crystal fiber
- Experimental interference of independent photons
- Photonic crystal fibre source of photon pairs for quantum information processing
- Tailored photon-pair generation in optical fibers
- High purity bright single photon source
- Nonclassical 2-photon interference with separate intrinsically narrowband fibre sources