Franson interference is a fourth order interference effect which, unlike the better known Hong-Ou-Mandel interference, does not require the entangled photon pairs to be present at the same space-time location for interference to occur - it is nonlocal. Here, we use a modified Franson interferometer to experimentally demonstrate the nonlocal erasure and correction of an image of a phase-object taken through coincidence imaging. This nonlocal quantum erasure technique can have several potential applications such as phase corrections in quantum imaging and microscopy and also user authentication of two foreign distant parties.
Bibliographical noteFunding Information:
This work was supported by Canada Research Chairs (CRC), the Canada Foundation for Innovation (CFI), the Canada First Excellence Research Fund (CFREF), and Ontario’s Early Researcher Award. L. Gao acknowledges the National Nature Foundation for the support within Project No. 11504337 and the Fundamental Research Funds for the Central Universities of China University of Geosciences (Beijing).
© 2019 Author(s).