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High-Dimensional Bell Test without Detection Loophole.
Hu, Xiao-Min; Zhang, Chao; Liu, Bi-Heng; Guo, Yu; Xing, Wen-Bo; Huang, Cen-Xiao; Huang, Yun-Feng; Li, Chuan-Feng; Guo, Guang-Can.
Afiliação
  • Hu XM; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China; CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, China and Hefei National Laboratory, University of Scien
  • Zhang C; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China; CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, China and Hefei National Laboratory, University of Scien
  • Liu BH; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China; CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, China and Hefei National Laboratory, University of Scien
  • Guo Y; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China; CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, China and Hefei National Laboratory, University of Scien
  • Xing WB; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China; CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, China and Hefei National Laboratory, University of Scien
  • Huang CX; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China; CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, China and Hefei National Laboratory, University of Scien
  • Huang YF; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China; CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, China and Hefei National Laboratory, University of Scien
  • Li CF; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China; CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, China and Hefei National Laboratory, University of Scien
  • Guo GC; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China; CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, China and Hefei National Laboratory, University of Scien
Phys Rev Lett ; 129(6): 060402, 2022 Aug 05.
Article em En | MEDLINE | ID: mdl-36018648
ABSTRACT
Violation of Bell's inequalities shows strong conflict between quantum mechanics and local realism. Loophole-free Bell tests not only deepen understanding of quantum mechanics, but are also important foundations for device-independent (DI) tasks in quantum information. High-dimensional quantum systems offer a significant advantage over qubits for closing the detection loophole. In the symmetric scenario, a detection efficiency as low as 61.8% can be tolerated using four-dimensional states and a four-setting Bell inequality [Phys. Rev. Lett. 104, 060401 (2010)PRLTAO0031-900710.1103/PhysRevLett.104.060401]. For the first time, we show that four-dimensional entangled photons violate a Bell inequality while closing the detection loophole in experiment. The detection efficiency of the four-dimensional entangled source is about 71.7%, and the fidelity of the state is 0.995±0.001. Combining the technique of multicore fibers, the realization of loophole-free high-dimensional Bell tests and high-dimensional quantum DI technologies are promising.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Diagnostic_studies Idioma: En Revista: Phys Rev Lett Ano de publicação: 2022 Tipo de documento: Article
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Diagnostic_studies Idioma: En Revista: Phys Rev Lett Ano de publicação: 2022 Tipo de documento: Article