2020/01/31 by Anne Maître, Giovanni Lerario, Adrià Medeiros +5 · 28 citations
Physics and Astronomy · #Bound state #Impossibility #Nonlinear Photonic Systems #Nonlinear system #Polariton #Spectroscopy and Quantum Chemical Studies #Stability (learning theory) #Strong Light-Matter Interactions #Superfluidity #Upper and lower bounds #cond-mat.quant-gas #quant-ph
paper · pdf · doi:10.1103/physrevx.10.041028
published in Physical Review X 10(4) (American Physical Society)
openalex created_date 2020/02/07 · arxiv created 2020/03/23 · openalex publication_date 2020/11/09 · arxiv updated 2020/11/18 · openalex updated_date 2026/08/06
The general theory of dark solitons relies on repulsive interactions and, therefore, predicts the impossibility to form dark-soliton bound states. One important exception to this prediction is the observation of bound solitons in nonlocal nonlinear media. Here, we report that exciton-polariton superfluids can also sustain darksoliton molecules, although the interactions are fully local. With a novel all-optical technique, we create two dark solitons that bind together to form an unconventional dark-soliton molecule. We demonstrate that the stability of this structure and the separation distance between two dark solitons is tightly connected to the driven-dissipative nature of the polariton fluid.