title: Demonstration of high-order dispersion cancellation with an ultrahigh-efficiency sum-frequency correlator.
abstract: We demonstrate dispersion cancellation of entangled photons for arbitrary spectral orders, generalizing Franson cancellation typically considered in second order alone. Employing ultrafast coincidence detection based on sum-frequency generation in a periodically poled lithium niobate waveguide with a record-high pair conversion efficiency of 10(-5), we verify cancellation of dispersion up to fifth order. Cancellation of odd-order phase is experimentally shown to require identical signal and idler dispersion coefficients, in contrast to even-order phase, which cancels with opposite signs. These results are especially important for future work on ultrabroadband biphotons.
authors.affiliation: School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, USA.
authors.forename: Joseph M
authors.initials: JM
authors.lastname: Lukens
authors.forename: Amir
authors.initials: A
authors.lastname: Dezfooliyan
authors.forename: Carsten
authors.initials: C
authors.lastname: Langrock
authors.forename: Martin M
authors.initials: MM
authors.lastname: Fejer
authors.forename: Daniel E
authors.initials: DE
authors.lastname: Leaird
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Weiner