61 citations · 139 across the 19 of their papers we have counts for
19 papers
Logarithmically Correlated Landscapes and Localization in Non-Hermitian Quasicrystals
Xianqi Tong, Qifeng Ding, Xiaosen Yang
We study a one-dimensional Hatano-Nelson ring whose nonreciprocal hopping is quasiperiodically modulated through zero. A gauge transformation maps every eigenstate onto a single sp…
Analytical mobility edge in nonreciprocal quasiperiodic lattices with next-nearest-neighbor hopping
Wenmin Wang, Xiaosen Yang, Xianqi Tong
We investigate localization transitions and spectral topology in a one-dimensional non-Hermitian generalization of the Aubry-André model in which both the nearest-neighbor and the…
Interplay of Quasiperiodic Criticality and the Non-Hermitian Skin Effect
Zhangyuan Chen, Xianqi Tong, Xiaosen Yang
Quasiperiodic lattices can host critical eigenstates, whereas nonreciprocal hopping in non-Hermitian lattices can induce non-Hermitian skin effect. In this work, we investigate loc…
Biorthogonal dynamical quantum phase transitions in non-Hermitian topological superconductors
Haoran Gu, Yubo Zhao, Siyuan Cheng +3
Dynamical quantum phase transitions in non-Hermitian systems pose fundamental challenges due to the intrinsic biorthogonality of their eigenstates. In this work, we extend a biorth…
Non-Hermitian Mosaic Maryland model
Zhenning Wang, Ni Lu, Dan Liu +2
We introduce the non-Hermitian mosaic Maryland model, where a discrete modulation period and a non-Hermitian phase are incorporated into the potential, rendering the originally exa…
Finer sub-Planck structures and displacement sensitivity of SU(1,1) circular states
Naeem Akhtar, Jia-Xin Peng, Tariq Aziz +2
Quantum states with sub-Planck features exhibit sensitivity to phase-space displacements beyond the standard quantum limit, making them useful for quantum metrology. In the context…
Non-Hermitian Second-Order Topological Phases and Bipolar Skin Effect in Photonic Kagome Crystals
Xiaosen Yang, Yaru Feng, Abdul Wahab +1
Non-Hermitian photonics provides a fertile platform for exploring phenomena with no Hermitian counterparts, including the non-Hermitian skin effect and exceptional points, with dir…
Non-Hermitian higher-order topological insulators enabled by altermagnet engineering
Xiang Ji, Dengfeng Wang, Tong Zhou +1
We show that proximity to an altermagnet provides an efficient route to engineering non-Hermitian higher-order topological phases. The proximity-induced altermagnetic order gaps th…
Entanglement signatures of quantum criticality in Floquet non-Hermitian topological systems
Siyuan Cheng, Rui Xie, Xiaosen Yang +2
The entanglement entropy can be an effective diagnostic tool for probing topological phase transitions. In one-dimensional single particle systems, the periodic driving generates a…
Decoherence across phase-space scales: From compass states to general quantum states
Naeem Akhtar, Jia-Xin Peng, Tan Hailin +2
Environmental decoherence occurs when a quantum system interacts with its surroundings, progressively reducing quantum interference and coherence, complicating the preservation of…
Impact of Nonreciprocal Hopping on Localization in Non-Hermitian Quasiperiodic Systems
Xianqi Tong, Yiling Zhang, Bin Li +1
We study the non-Hermitian Aubry-André-Harper model, incorporating complex phase modulation, unmodulated and modulated nonreciprocal hopping. Using Avila's global theory, we derive…
Floquet engineering of point-gapped topological superconductors
Xiang Ji, Hao Geng, Naeem Akhtar +1
Non-Hermitian systems exhibit two distinct topological classifications based on their gap structure: line-gap and point-gap topologies. Although point-gap topology is intrinsic to…
Enhancement in temperature sensing of a reservoir by Kerr-nonlinear resonator
Naeem Akhtar, Jia-Xin Peng, Xiaosen Yang +1
The challenge of developing high-precision temperature sensors is an important issue that has recently received a lot of attention. In this work, we introduce an estimation techniq…
Tunable optical amplification and group delay in cavity magnomechanics
Abdul Wahab, Muqaddar Abbas, Xiaosen Yang +1
In this work, we theoretically investigate the controllable output probe transmission and group delay in a hybrid cavity magnomechanics (CMM) system. The setup comprises a gain (ac…
Enhanced second-order sideband generation and slow-fast light via coupled opto- and magnomechanical microspheres
Abdul Wahab, Muqaddar Abbas, Xiaosen Yang +2
In this research, we investigate second-order sideband generation (SSG) and slow-fast light using a hybrid system comprised of two coupled opto- and magnomechanical microspheres, n…
Sub-shot-noise sensitivity via superpositions of two deformed kitten states
Naeem Akhtar, Xiaosen Yang, Jia-Xin Peng +3
In the present work we explore nonclassical effects in the phase space of two superposed kitten states induced by photon addition and subtraction operations applied in different se…
Generalized bulk-boundary correspondence in periodically driven non-Hermitian systems
Xiang Ji, Xiaosen Yang
We present a pedagogical review of the periodically driven non-Hermitian systems, particularly on the rich interplay between the non-Hermitian skin effect and the topology. We star…
Compasslike states in a thermal reservoir and fragility of their nonclassical features
Naeem Akhtar, Xiaosen Yang, Muhammad Asjad +3
Superposed photon-added and photon-subtracted squeezed-vacuum states exhibit sub-Planck phase-space structures and metrological potential similar to the original compass states (su…
Non-Hermitian second-order topological superconductors
Xaing Ji, Wenchen Ding, Yuanping Chen +1
The topology of non-Hermitian systems is fundamentally changed by the non-Hermitian skin effect, which leads to the generalized bulk-boundary correspondence. Based on the non-Bloch…