44 citations
- Nanjing Normal UniversityCN3 papers
- Zhejiang Wanli UniversityCN3 papers
- National Taiwan University of Science and TechnologyTW1 paper
- National University of SingaporeSG1 paper
- Northeastern UniversityUS1 paper
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quant-ph2008★ 44 cited
Fidelity, fidelity susceptibility and von Neumann entropy to characterize the phase diagram of an extended Harper model
Longyan Gong, Peiqing Tong
For an extended Harper model, the fidelity for two lowest band edge states corresponding to different model parameters, the fidelity susceptibility and the von Neumann entropy of t…
quant-ph2007★ 10 cited
von Neumann entropy and localization properties of two interacting particles in one-dimensional nonuniform systems
Longyan Gong, Peiqing Tong
With the help of von Neumann entropy, we study numerically the localization properties of two interacting particles (TIP) with on-site interactions in one-dimensional disordered, q…
quant-ph2007★ 29 cited
Von Neumann entropy and localization-delocalization transition of electron states in quantum small-world networks
Longyan Gong, Peiqing Tong
The von Neumann entropy for an electron in periodic, disorder and quasiperiodic quantum small-world networks(QSWNs) are studied numerically. For the disorder QSWNs, the derivative…