Measurement of subpicosecond time intervals between two photons by interference
- 2 November 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 59 (18) , 2044-2046
- https://doi.org/10.1103/physrevlett.59.2044
Abstract
A fourth-order interference technique has been used to measure the time intervals between two photons, and by implication the length of the photon wave packet, produced in the process of parametric down-conversion. The width of the time-interval distribution, which is largely determined by an interference filter, is found to be about 100 fs, with an accuracy that could, in principle, be less than 1 fs.Keywords
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