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. 2019 Sep 20;123(12):123602.
doi: 10.1103/PhysRevLett.123.123602.

Excitation Modes of Bright Matter-Wave Solitons

Andrea Di Carli  1 , Craig D Colquhoun  1 , Grant Henderson  1 , Stuart Flannigan  1 , Gian-Luca Oppo  1 , Andrew J Daley  1 , Stefan Kuhr  1 , Elmar Haller  1
Affiliations
Free article

Excitation Modes of Bright Matter-Wave Solitons

Andrea Di Carli et al. Phys Rev Lett. .
Free article

Abstract

We experimentally study the excitation modes of bright matter-wave solitons in a quasi-one-dimensional geometry. The solitons are created by quenching the interactions of a Bose-Einstein condensate of cesium atoms from repulsive to attractive in combination with a rapid reduction of the longitudinal confinement. A deliberate mismatch of quench parameters allows for the excitation of breathing modes of the emerging soliton and for the determination of its breathing frequency as a function of atom number and confinement. In addition, we observe signatures of higher-order solitons and the splitting of the wave packet after the quench. Our experimental results are compared to analytical predictions and to numerical simulations of the one-dimensional Gross-Pitaevskii equation.

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