We study the generalized Young's double-slit interference for the beam produced in the spontaneously parametric down-conversion (SPDC). We find that the sub-wavelength lithography can occur macroscopically in both the two-photon intensity measurement and the single-photon spatial intensity correlation measurement. We show the visibility and the strength of the interference fringe related to the SPDC interaction. It may provide a strong quantum lithography with a moderate visibility in practical application.
@article{arxiv.quant-ph/0310046,
title = {Quantum Lithography in Macroscopic Observations},
author = {De-Zhong Cao and Kaige Wang},
journal= {arXiv preprint arXiv:quant-ph/0310046},
year = {2007}
}