Journal of East China Normal University(Natural Science) >

2023 , Vol. 2023 >Issue 4: 74 - 85

DOI: https://doi.org/10.3969/j.issn.1000-5641.2023.04.008

Physics and Electronics

Quantum entanglement of molecular dipole arrays trapped in an optical lattice

  • Wenjing YUE ,
  • Qi WEI
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  • State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai　200241, China

Received date: 2022-03-07

  Online published: 2023-07-25

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Abstract

For a polar molecule subjected to an external electric field, its molecular axis will oscillate around the direction of the electric field, forming pendular states. Taking the two lowest-lying pendular states with magnetic quantum number $M=0 $ as qubit states, we study quantum entanglement of polar molecular arrays trapped in a one-dimensional optical lattice. We evaluate pairwise concurrence and global entanglement as functions of three dimensionless variables related to external field intensity–permanent dipole moment, a rotation constant, dipole-dipole interaction, and temperature —thus revealing the properties of the entangled molecular dipole arrays.

Key words： quantum entanglement; polar molecule; pendular state; optical lattice

Cite this article

Wenjing YUE , Qi WEI . Quantum entanglement of molecular dipole arrays trapped in an optical lattice[J]. Journal of East China Normal University(Natural Science), 2023 , 2023(4) : 74 -85 . DOI: 10.3969/j.issn.1000-5641.2023.04.008

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