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Multistability describes a system’s capacity to maintain multiple stable states under the same external conditions. It is a defining feature of complex nonlinear systems and a critical component for realizing multi-level optical storage. However, due to the inherently weak optical nonlinear effects, achieving optical multistability at micro- and nano-scales has long posed a significant challenge in the scientific community.
Recently, Peng Chao’s team from the School of Electronics at Peking University, in collaboration with Harbin Engineering University and ITMO University in Russia, published a research paper titled "Optical multistability in a compact microcavity enabled by near-exceptional points" in Nature Nanotechnology. The study introduces a novel approach to achieving optical multistability within a compact microcavity by leveraging near-exceptional points.
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