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author:

Ma, Y. (Ma, Y..) [1] | Pan, X. (Pan, X..) [2] | Cai, W. (Cai, W..) [3] | Mu, X. (Mu, X..) [4] | Xu, Y. (Xu, Y..) [5] | Hu, L. (Hu, L..) [6] | Wang, W. (Wang, W..) [7] | Wang, H. (Wang, H..) [8] | Song, Y.P. (Song, Y.P..) [9] | Yang, Z.-B. (Yang, Z.-B..) [10] (Scholars:杨贞标) | Zheng, S.-B. (Zheng, S.-B..) [11] (Scholars:郑仕标) | Sun, L. (Sun, L..) [12]

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Abstract:

Quantum correlations in observables of multiple systems not only are of fundamental interest, but also play a key role in quantum information processing. As a signature of these correlations, the violation of Bell inequalities has not been demonstrated with multipartite hybrid entanglement involving both continuous and discrete variables. Here we create a five-partite entangled state with three superconducting transmon qubits and two photonic qubits, each encoded in the mesoscopic field of a microwave cavity. We reveal the quantum correlations among these distinct elements by joint Wigner tomography of the two cavity fields conditional on the detection of the qubits and by test of a five-partite Bell inequality. The measured Bell signal is 8.381±0.038, surpassing the bound of 8 for a four-partite entanglement imposed by quantum correlations by 10 standard deviations, demonstrating the genuine five-partite entanglement in a hybrid quantum system. © 2020 American Physical Society.

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  • [ 1 ] [Ma, Y.]Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing, 100084, China
  • [ 2 ] [Pan, X.]Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing, 100084, China
  • [ 3 ] [Cai, W.]Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing, 100084, China
  • [ 4 ] [Mu, X.]Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing, 100084, China
  • [ 5 ] [Xu, Y.]Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing, 100084, China
  • [ 6 ] [Hu, L.]Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing, 100084, China
  • [ 7 ] [Wang, W.]Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing, 100084, China
  • [ 8 ] [Wang, H.]Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing, 100084, China
  • [ 9 ] [Song, Y.P.]Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing, 100084, China
  • [ 10 ] [Yang, Z.-B.]Fujian Key Laboratory of Quantum Information and Quantum Optics, College of Physics and Information Engineering, Fuzhou University, Fuzhou, Fujian, 350108, China
  • [ 11 ] [Zheng, S.-B.]Fujian Key Laboratory of Quantum Information and Quantum Optics, College of Physics and Information Engineering, Fuzhou University, Fuzhou, Fujian, 350108, China
  • [ 12 ] [Sun, L.]Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing, 100084, China

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Source :

Physical Review Letters

ISSN: 0031-9007

Year: 2020

Issue: 18

Volume: 125

9 . 1 6 1

JCR@2020

8 . 1 0 0

JCR@2023

ESI HC Threshold:115

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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