Observation of optical precursors at the biphoton level.
We describe the observation of a sharp leading-edge spike in a biphoton wave packet that is produced using slow light and measured by two-photon correlation. Using the stationary-phase approximation we characterize this spike as a Sommerfeld-Brillouin precursor resulting from the interference of low- and high-frequency spectral components.
Du
Shengwang
S
Edward L. Ginzton Laboratory, Stanford University, Stanford, CA 94305, USA. dusw@ust.hk
Belthangady
Chinmay
C
Kolchin
Pavel
P
Yin
G Y
GY
Harris
S E
SE