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机译:Witnessing entanglement without entanglement witness operators
Quantum Sci & Technol Arcetri, I-50125 Florence, Italy;
Shanxi Univ, Inst Theoret Phys, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China;
quantum entanglement; entanglement detection; quantum technology; Fisher information; trapped ions;