title: Quasi-phase-matched concurrent nonlinearities in periodically poled KTiOPO(4) for quantum computing over the optical frequency comb.
abstract: We report the successful design and experimental implementation of three coincident nonlinear interactions, namely ZZZ (type 0), ZYY (type I), and YYZ/YZY (type II) second-harmonic generation of 780 nm light from a 1560 nm pump beam in a single, multigrating, periodically poled KTiOPO(4) crystal. The resulting nonlinear medium is the key component for making a scalable quantum computer over the optical frequency comb of a single optical parametric oscillator.
authors.affiliation: Department of Physics, University of Virginia, 382 McCormick Road, Charlottesville, Virginia 22904-4714, USA.
authors.forename: Matthew
authors.initials: M
authors.lastname: Pysher
authors.forename: Alon
authors.initials: A
authors.lastname: Bahabad
authors.forename: Peng
authors.initials: P
authors.lastname: Peng
authors.forename: Ady
authors.initials: A
authors.lastname: Arie
authors.forename: Olivier
authors.initials: O
authors.lastname: Pfister