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However, the unidirectional photoresponse of current optoelectronic devices limits their further advancement. Here, we develop a wavelength\u2010reconfigurable artificial synapse with the ambipolar\u2010like property based on the semiconductor\u2010circuit synergy. By integrating a dual\u2010power circuit with the unique bidirectional photoresponse of tin selenide, an uncommon multidimensional optoelectronic plasticity is achieved through the dual regulation applied by light and voltage. Information from incident light is encoded and mapped to vector changes in the conductance state of the device. This unique functionality enables readily in\u2010memory color recognition through machine learning with a high accuracy of 96.2% for green, blue, and ultraviolet light. Furthermore, we construct a dual\u2010key optical encryption scheme based on light and voltage modulation on an 8\u00d78 array. This work introduces a novel physical principle for synaptic modulation, demonstrating additional possibilities from the convergence of circuit design and optoelectronic devices. It provides a new pathway for developing multifunctional neuromorphic devices and reconfigurable photonic computing hardware.<\/jats:p>","DOI":"10.1002\/smll.76006","type":"journal-article","created":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T12:52:34Z","timestamp":1790686354000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Circuit\u2010Synergistic SnSe Artificial Synapses With Ambipolar\u2010Like Plasticity for Color Recognition and Dual\u2010Key Optical Encryption"],"prefix":"10.1002","author":[{"given":"Zihui","family":"Liu","sequence":"first","affiliation":[{"name":"State Key Laboratory of Silicon and Advanced Semiconductor Materials School of Materials Science and Engineering Zhejiang University  Hangzhou People's Republic of China"},{"name":"Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials Institute of Wenzhou Zhejiang University  Wenzhou People's Republic of 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