Using a basic Mach-Zehnder interferometer, we demonstrate experimentally the measurement of the photonic de Broglie wavelength of an entangled photon pair (a biphoton) generated by spontaneous parametric down-conversion. The observed interference manifests the concept of the photonic de Broglie wavelength. The result also provides a proof-of-principle of the quantum lithography that utilizes the reduced interferometric wavelength.
@article{arxiv.quant-ph/0109005,
title = {Measurement of the photonic de Broglie wavelength of biphotons generated by spontaneous parametric down-conversion},
author = {Keiichi Edamatsu and Ryosuke Shimizu and Tadashi Itoh},
journal= {arXiv preprint arXiv:quant-ph/0109005},
year = {2009}
}