Correlation control for pure and efficiently generated heralded single photons

Abstract

We present a detailed study on the properties of single photons generated by spontaneous parametric down conversion (SPDC) when both the spectral and spatial degrees of freedom are controlled by means of filters. Our results show that it is possible to obtain pure heralded single photons with high heralding efficiency despite the use of filters. Moreover, we report an asymmetry on the single photon properties exhibited in type-II SPDC sources that depends on choosing the signal or the idler photon as the heralding one.

8 pages, 12 figures

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Cited by in corpus (7)

• Limits on the heralding efficiencies and spectral purities of spectrally-filtered single photons from photon pair sources
• High-performance source of spectrally pure, polarization entangled photon pairs based on hybrid integrated-bulk optics
• Revealing Hidden Coherence in Partially Coherent Light
• The effects of filtering on the purity of heralded single photons from parametric sources
• The effect of self- and cross-phase modulation on photon-pairs generated by spontaneous four-wave mixing in integrated optical waveguides
• Spectral correlation in down-converted photon pairs at telecom wavelength
• Measuring different types of transverse momentum correlations in the biphoton's Fourier plane