title: Multisoliton Newton's cradles and supersolitons in regular and parity-time-symmetric nonlinear couplers.
abstract: We demonstrate the existence of stable collective excitation in the form of "supersolitons" propagating through chains of solitons with alternating signs (i.e., Newton's cradles built of solitons) in nonlinear optical couplers, including the parity-time-symmetric (PT-symmetric) version thereof. In the regular coupler, stable supersolitons are created in the cradles composed of both symmetric solitons and asymmetric ones with alternating polarities. Collisions between moving supersolitons are investigated too, by means of direct simulations in both the regular and PT-symmetric couplers.
authors.affiliation: Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China.
authors.forename: Pengfei
authors.initials: P
authors.lastname: Li
authors.affiliation: Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China.
authors.forename: Lu
authors.initials: L
authors.lastname: Li
authors.affiliation: Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel.
authors.forename: Boris A
authors.initials: BA
authors.lastname: Malomed
mesh_terms: D008962:Models, Theoretical; D017711:Nonlinear Dynamics