Nonlocal cancellation of dispersion in Franson interferometry
Author(s)Zhong, Tian; Wong, Franco N. C.
MetadataShow full item record
Dispersion and its cancellation in entanglement-based nonlocal quantum measurements are of fundamental and practical interests. We report a demonstration of cancellation of femtosecond-level dispersion by inverting the sign of the differential dispersion between the long and short paths in only one arm of a fiber-based Franson interferometer. We restore the otherwise limited quantum visibility to an unprecedented 99.6%, and put time-energy entanglement at the same level of quality as polarization entanglement for use in quantum information processing applications.
DepartmentMassachusetts Institute of Technology. Research Laboratory of Electronics
Physical Review A
American Physical Society
Zhong, Tian, and Franco N. C. Wong. “Nonlocal cancellation of dispersion in Franson interferometry.” Physical Review A 88, no. 2 (August 2013). © 2013 American Physical Society
Final published version