非厄米诱导序
Non-Hermitian Disorder-induced Topological insulatorsXiwang LuoChuanwei ZhangAmerican Physical Society
where M is the proximity-induced exchange field breaking time-reversal symmetry due to the metallic ferromagnet. \(v_F\) is the Fermi velocity. Also, \(\sigma _{x,y,z}\) and \(\sigma _{0}\) are the Pauli matrices and identity matrix, respectively, acting on the spin space. \(\...
In Eq. (3), one can see both the intrinsic Berry phase in the Hermitian limit (i.e., \(\varphi _0/2\)) and the non-Hermitian-induced geometric phase. Consequently, instead of being quantized, the Berry phase in each band becomes continuously varying due to the non-Hermitian-induced ...
This review presents an overview of the accidental-degeneracy-induced Dirac-like cones at the center of the Brillouin zone in both photonic and phononic structures, including the fundamental physics, effective-medium description and experimental demonstration, as well as current challenges and future ...
In this work, we consider a one-dimensional non-Hermitian lattice model induced by partially asymmetric coupling with time-periodic and spatially periodic ... R Santos 被引量: 0发表: 2013年 Spectra of non-hermitian quantum spin chains describing boundary induced phase transitions The spectrum of ...
By exploiting the properties of such non-Hermitian degeneracies, we show that the rotation-induced frequency splitting becomes ... J Ren,H Hodaei,G Harari,... - 《Optics Letters》 被引量: 13发表: 2017年 Parity-time symmetry meets photonics: A new twist in non-Hermitian optics Together ...
Decoherence-Induced Exceptional Points in a Dissipative Superconducting Qubit By dynamically tuning the Liouvillian superoperators in real time we observe a non-Hermiticity-induced chiral state transfer. Our study motivates a new look at open quantum system dynamics from the vantage of Liouvillian exceptio...
We further find FQZ-induced strong single-photon nonlinearity. Remarkably, we identify that the sub-Poissonian quantum statistics of photons, which has no classical analogues, stems here from the key role of non-Hermiticity. Our setup is experimentally feasible with the techniques used to design ...
nontrivial topological phase induced by disorder.This phase is understood as the topological Anderson insulator in non-Hermitian systems.Finally,the disordered ... 刘宏芳,苏子贤,张智强,... - 《Chinese Physics B》 被引量: 0发表: 2020年 Topological Anderson insulator in two-dimensional non-Hermitian...