Speaker
Dr
Bernhard Adams
(Incom, Inc.)
Description
The large-area picosecond photodetector (LAPPD$^{\text{TM}}$) is an ultrafast imaging detector with single-photon sensitivity.
It can supply a continuous stream of photon-detection events, resolved spatially to about 0.5 X 0.5 mm$^2$ on an area of 20 X 20 cm$^2$, and temporally to about 50 ps.
The time resolution approaches the coherence time of light filtered with dielectric-layer interference filters, and so, the detector can then resolve photon occupations in each longitudinal mode of light.
Furthermore, if used with diffraction-limited optics matched to the spatial resolution, the detector can also resolve about 400 by 400 transverse modes.
LAPPD$^{\text{TM}}$ is thus an enabling technology for quantum optics where
photon occupation numbers in each electromagnetic-field mode in 6-dimensional phase space are relevant,
for example photon-correlation experiments (Hanbury Brown - Twiss, or ghost imaging).
Reference: http://psec.uchicago.edu/
Author
Dr
Bernhard Adams
(Incom, Inc.)
