Coupled polariton solitons in semiconductor microcavities with a double-well potential

In a double-well microcavity, coupling of spatial polariton solitons between the two wells is studied theoretically. Polaritons trapped inside the double-well structure can demonstrate bistability where both bright and dark polariton solitons are supported. Due to the tunneling effect, the combination of polariton solitons in the two wells can be bright-bright, dark-bright or dark-dark dependent on the initial states (i.e., on-state, off-state, or mixed-state) of the polaritons.

► Polariton soliton in microcavity is a very newly generated topic.
► This manuscript reported the entangled polariton soliton in a microcavity with double-well potential for the first time.
► The generation/evolution of polariton solitons and their interactions between the two potential wells were studied numerically.
► We found the tunneling effect of polaritons gives birth to variety of combinations of polariton solitons.
► The whole branches of dark and bright solitons are also changed considerably by the tunneling effect.