TY - JOUR
T1 - Effects of filtering on the purity of heralded single photons from parametric sources
AU - Blay, Daniel R.
AU - Steel, M. J.
AU - Helt, L. G.
PY - 2017/11/20
Y1 - 2017/11/20
N2 - Optical quantum protocols are reliant on the production of highly pure single photons. However, most parametric heralded single-photon sources possess spectral correlations, limiting the purity of the produced photon. The most common method for restoring the purity is with narrowband spectral filtering, which comes at the cost of reducing the rate of heralding detection. Here, we characterize this trade-off analytically for a large class of parametric sources. It is possible to achieve up to 20% heralding success probabilities with 90% heralded photon purities.
AB - Optical quantum protocols are reliant on the production of highly pure single photons. However, most parametric heralded single-photon sources possess spectral correlations, limiting the purity of the produced photon. The most common method for restoring the purity is with narrowband spectral filtering, which comes at the cost of reducing the rate of heralding detection. Here, we characterize this trade-off analytically for a large class of parametric sources. It is possible to achieve up to 20% heralding success probabilities with 90% heralded photon purities.
UR - http://www.scopus.com/inward/record.url?scp=85036630155&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.96.053842
DO - 10.1103/PhysRevA.96.053842
M3 - Article
AN - SCOPUS:85036630155
VL - 96
SP - 1
EP - 8
JO - Physical Review A: covering atomic, molecular, and optical physics and quantum information
JF - Physical Review A: covering atomic, molecular, and optical physics and quantum information
SN - 2469-9926
IS - 5
M1 - 053842
ER -