• 文献标题:   Dynamics of classical and quantum correlations in a zigzag graphene nanoribbon under noisy environments
  • 文献类型:   Article
  • 作  者:   TAN XD, ZHANG L, YUAN XF, LI ST
  • 作者关键词:   zigzag graphene nanoribbon, quantum dynamic, quantum channel
  • 出版物名称:   QUANTUM INFORMATION PROCESSING
  • ISSN:   1570-0755 EI 1573-1332
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1007/s11128-022-03439-3
  • 出版年:   2022

▎ 摘  要

We study the dynamics of classical and quantum correlations between two edge spins in a zigzag graphene nanoribbon (ZGNR) under noisy channels including the bit flip, phase flip, and bit-phase flip channels. The results show that the classical correlation is insusceptible under these channels, which only depends on the spin correlation function. Quantum correlations including entanglement (E), discord (D), and dissonance (Q) in the ZGNR are robust against the thermal fluctuations and display the sudden death and birth behaviors, where the death region increases with increasing temperature. E only exists between the antiferromagnetically coupled two spins in the ZGNR. For the antiferromagnetically coupled states, Q exhibits the sudden change behaviors at the points where entanglement just appears and completely disappears. By comparison, we also find that C is always larger than E, but it is not always true that C > D in the ZGNR.