TY - JOUR
T1 - Eliminating frequency and space-time correlations in multiphoton states
AU - Grice, W. P.
AU - U’Ren, A. B.
AU - Walmsley, I. A.
PY - 2001
Y1 - 2001
N2 - Multiphoton states constructed from photon pairs generated in the process of spontaneous parametric down-conversion possess frequency and space-time correlations that may carry undesired distinguishing information. It is shown that these correlations may be eliminated if certain conditions in the source configuration are satisfied. For the cases in which these conditions cannot be satisfied because of experimental constraints, it is shown that the correlations may be reduced through proper choices of crystal length and pump bandwidth. The advantage of such source engineering is that it yields much higher count rates, since no photon pairs are lost by predetection spectral filtering.
AB - Multiphoton states constructed from photon pairs generated in the process of spontaneous parametric down-conversion possess frequency and space-time correlations that may carry undesired distinguishing information. It is shown that these correlations may be eliminated if certain conditions in the source configuration are satisfied. For the cases in which these conditions cannot be satisfied because of experimental constraints, it is shown that the correlations may be reduced through proper choices of crystal length and pump bandwidth. The advantage of such source engineering is that it yields much higher count rates, since no photon pairs are lost by predetection spectral filtering.
UR - http://www.scopus.com/inward/record.url?scp=84874152221&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.64.063815
DO - 10.1103/PhysRevA.64.063815
M3 - Article
AN - SCOPUS:84874152221
SN - 1050-2947
VL - 64
SP - 7
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 6
ER -