= Measurement of Subpicosecond Time Intervals between Two Photons by Interference by C. K. Hong and others
{c}
{tag=Work by C. K. Hong}
{tag=Work by Z. Y. Ou}
{tag=Work by Leonard Mandel}
{title2=1987}
{title2=10.1103/PhysRevLett.59.2044}
https://doi.org/10.1103/PhysRevLett.59.2044
Primary-paper scan hosted by Caltech: https://painterlab.caltech.edu/wp-content/uploads/2019/06/iqd_measurement_subpicosecond_time_two_photons.pdf
Physical Review Letters 59, 2044–2046. The experiment combines down-converted <photon> pairs at a <beam splitter>, scans relative path delay and records coincidences after accounting for accidental background; the ideal balanced, indistinguishable limit suppresses the coincidence output.
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