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Chen, Xiaojiong; Deng, Yaohao; Liu, Shuheng; Pramanik, Tanumoy; Mao, Jun; Bao, Jueming; Zhai, Chonghao; Dai, Tianxiang; Yuan, Huihong; Guo, Jiajie; Fei, Shao-Ming; Huber, Marcus; Tang, Bo; Yang, Yan; Li, Zhihua; He, Qiongyi; Gong, Qihuang; Wang, Jianwei
Nature communications, 05/2021, Letnik: 12, Številka: 1Journal Article
Bohr's complementarity is one central tenet of quantum physics. The paradoxical wave-particle duality of quantum matters and photons has been tested in Young's double-slit (double-path) interferometers. The object exclusively exhibits wave and particle nature, depending measurement apparatus that can be delayed chosen to rule out too-naive interpretations of quantum complementarity. All experiments to date have been implemented in the double-path framework, while it is of fundamental interest to study complementarity in multipath interferometric systems. Here, we demonstrate generalized multipath wave-particle duality in a quantum delayed-choice experiment, implemented by large-scale silicon-integrated multipath interferometers. Single-photon displays sophisticated transitions between wave and particle characters, determined by the choice of quantum-controlled generalized Hadamard operations. We characterise particle-nature by multimode which-path information and wave-nature by multipath coherence of interference, and demonstrate the generalisation of Bohr's multipath duality relation. Our work provides deep insights into multidimensional quantum physics and benchmarks controllability of integrated photonic quantum technology.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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