Controllable nonlinearity and coherence of polaritons in monolayer TMDs mesa cavities (IMAGE)
Caption
a, Schematic of monolayer WS2 embedded in two DBRs with cylindrical mesa structures. The exciton-polaritons are trapped in the artificial confinement potential. b, The estimated polariton-exciton interaction strength versus trap size at the detuning of -33 meV (blue) and -69 meV (red). All the experimental results show that artificially creating potential landscapes is an encouraging strategy for enhancing polariton-exciton interaction strengths. c, Coherence time as a function of trap size in the cavity, indicating that the increased polariton-reservoir interaction for the tighter confinement would accelerate the decoherence rate of polaritons and shorten the coherence time. The error bars correspond to the exponential fitting uncertainty.
Credit
by Qihua Xiong, Hongxing Xu.
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License
CC BY