The University of Science and Technology of China Unveils a Distributed Quantum Sensing Protocol Independent of a Common Reference Frame
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Author:小编   

Recently, a research team helmed by Academician Guo Guangcan at the University of Science and Technology of China has achieved a remarkable breakthrough in the realm of distributed quantum sensing. The team, comprising members like Li Chuanfeng and Chen Geng, has introduced a reverse encoding protocol that effectively overcomes the constraints imposed by the 'no-go theorem'—a barrier arising from the lack of a shared reference frame. Through the strategic disruption of symmetry in the encoding process, this innovative protocol enables the complete recovery of quantum Fisher information utilizing solely local operations. As a result, it attains measurement precision at the Heisenberg limit. This milestone achievement paves the way for future advancements, including the construction of high-precision satellite-ground quantum sensing networks and distributed optical clocks. The pertinent research findings have been published in the esteemed international journal Nature Communications.