• 文献标题:   Superposed graphene coherent states
  • 文献类型:   Article
  • 作  者:   MOTAMEDINASAB A, ANBARAKI A
  • 作者关键词:   graphene coherent state, even state, odd state, entanglement
  • 出版物名称:   CHINESE JOURNAL OF PHYSICS
  • ISSN:   0577-9073
  • 通讯作者地址:   Shahid Chamran Univ Ahvaz
  • 被引频次:   1
  • DOI:   10.1016/j.cjph.2020.02.016
  • 出版年:   2020

▎ 摘  要

Using an annihilation operator, coherent states related to the electron of graphene layer placed in a magnetic field, can be obtained. In this paper, we define even and odd superposed graphene coherent states and then, we consider their entanglement, squeezing and statistical properties. To study the entanglement, we use concurrence. The results show that odd superposed graphene coherent states are maximally entangled states for all values of coherence parameter. However, the entanglement of graphene coherent states and also even superposed depend on the coherence parameter. In addition, examining the Mandel parameter shows sub-Poissonian statistics for graphene coherent states and their odd superposition; while, even superposed states do not show sub-Poissonian statistics at all. Also, we find that graphene coherent states and even superposition may be squeezed while the odd states do not show squeezing.