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Nonclassical properties of induced states from single-mode squeezed vacuum state related with Hermite excited elementary superposition operation

  • Xue-xiang XuEmail author
  • Jian-ming Wang
  • Hong-chun Yuan
  • Ye-jun Xu
  • Xiang-guo Meng
Regular Article
  • 23 Downloads

Abstract.

Based on single-mode squeezed vacuum state (SVS) and Hermite-excited elementary superposition operator \( H_{m} (xa^{\dagger}+ya)\), we induce two new quantum states, i.e., Hermite-excited squeezed vacuum state (HSVS) and Hermite-excite-orthogonalized squeezed vacuum state (HOSVS). HSVS is obtained by applying the operator on SVS and HOSVS is obtained by applying the orthogonalizer on SVS, where HSVS is just HOSVS for odd m. We study and compare mathematical and nonclassical properties for SVS, HSVS and HOSVS, including photon number distribution, Mandel’s Q parameter, quadrature squeezing, and Wigner function. Numerical results show that i) HSVS and HOSVS have only even (odd) photon components for even (odd) m; ii) HSVS and HOSVS can exhibit sub-Poissonian statistics in low-squeezing parameter regime and squeezing effect in large-squeezing parameter regime; iii) moreover, squeezing is always incompatible with sub-Poissonianity; iv) Wigner functions for HSVS and HOSVS have negative values in phase space.

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Copyright information

© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Xue-xiang Xu
    • 1
    Email author
  • Jian-ming Wang
    • 1
  • Hong-chun Yuan
    • 2
  • Ye-jun Xu
    • 3
  • Xiang-guo Meng
    • 4
  1. 1.Center for Quantum Science and TechnologyJiangxi Normal UniversityNanchangChina
  2. 2.College of Electrical and Optoelectronic EngineeringChangzhou Institute of TechnologyChangzhouChina
  3. 3.School of Mechanical and Electronic EngineeringChizhou UniversityChizhouChina
  4. 4.Shandong Provincial Key Laboratory of Optical Communication Science and Technology, School of Physical Science and Information EngineeringLiaocheng UniversityLiaochengChina

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