41 citations · 107 across the 14 of their papers we have counts for
15 papers
Antichiral hinge states in a higher-order photonic nodal ring semimetal
Yuchen Peng, Deep Mondal, Yuting Yang +17
Antichiral states propagate in the same direction on opposite boundaries, defying the conventional constraint that boundary modes must cancel net chirality. Previously found antich…
Spin-momentum locking of polariton edge states in honeycomb lattices
Andrea Herrero Otermin, Nicola Carlon Zambon, Dheerendra Singh +10
Transverse-electric/Transverse-magnetic splitting in dielectric-mirror microcavities introduces an effective spin-orbit coupling for photons. While the bulk states remain linearly…
Artificial Gauge Fields and Dimensions in a Polariton Hofstadter Ladder
Simon Widmann, Jonas Bellmann, Johannes Düreth +11
Artificial gauge fields allow uncharged particles to mimic the behavior of charged particles subjected to magnetic fields, providing a powerful platform for exploring topological p…
Observation of non-Hermitian topological disclination states and charge fractionalization
Ruifeng Li, Rimi Banerjee, Subhaskar Mandal +8
There has been significant interest in exploring topological disclination states, which effectively probe the band topology of the host material beyond the conventional bulk-edge c…
Topological disclination states and charge fractionalization in a non-Hermitian lattice
Rimi Banerjee, Subhaskar Mandal, Yun Yong Terh +4
We show that a non-Hermitian lattice with a disclination can host topological disclination states that are induced by on-site gain and loss. The disclination states are inherently…
Photonic bilayer Chern insulator with corner states
Subhaskar Mandal, Ziyao Wang, Rimi Banerjee +6
Photonic Chern insulators can be implemented in gyromagnetic photonic crystals with broken time-reversal (TR) symmetry. They exhibit gapless chiral edge states (CESs), enabling uni…
Observation of perovskite topological valley exciton-polaritons at room temperature
Feng Jin, Subhaskar Mandal, Zhenhan Zhang +7
Topological exciton-polaritons are a burgeoning class of topological photonic systems distinguished by their hybrid nature as part-light, part-matter quasiparticles. Their further…
Perovskite topological exciton-polariton disclination laser at room temperature
Feng Jin, Subhaskar Mandal, Xutong Wang +2
Topologically nontrivial systems can be protected by band topology in momentum space, as seen in topological insulators and semimetals, or real-space topology, such as in lattice d…
Pseudomagnetic suppression of non-Hermitian skin effect
Hau Tian Teo, Subhaskar Mandal, Yang Long +2
It has recently been shown that the non-Hermitian skin effect can be suppressed by magnetic fields. In this work, using a two-dimensional tight-binding lattice, we demonstrate that…
Localization of chiral edge states by the non-Hermitian skin effect
Gui-Geng Liu, Subhaskar Mandal, Peiheng Zhou +11
Quantum Hall systems host chiral edge states extending along the one-dimensional boundary of any two-dimensional sample. In solid state materials, the edge states serve as perfectl…
Realization of a quadrupole topological insulator phase in a gyromagnetic photonic crystal
Peiheng Zhou, Gui-Geng Liu, Zihao Wang +8
The field of topological photonics was initiated with the realization of a Chern insulator phase in a gyromagnetic photonic crystal (PhC) with broken time-reversal symmetry (T), ho…
Topology with memory in nonlinear driven-dissipative photonic lattices
Subhaskar Mandal, Gui-Geng Liu, Baile Zhang
We consider a photonic lattice of nonlinear lossy resonators subjected to a coherent drive, where the system remembers its topological phase. Initially, the system is topologically…
Non-reciprocal Exciton-Polariton Ring Lattices
Huawen Xu, Kevin Dini, Xingran Xu +3
Recent experiments have shown the transfer of orbital angular momentum (OAM) from a non-resonant laser onto an exciton-polariton condensate, despite earlier views that the phase in…
From the topological spin-Hall effect to the non-Hermitian skin effect in an elliptical micropillar chain
S. Mandal, R. Banerjee, T. C. H. Liew
The topological spin-Hall effect causes different spins to propagate in opposite directions based on Hermitian physics. The non-Hermitian skin effect causes the localization of a l…
Semiconductor quantum well irradiated by a two-mode electromagnetic field as a terahertz emitter
S. Mandal, T. C. H. Liew, O. V. Kibis
We study theoretically the nonlinear optical properties of a semiconductor quantum well (QW) irradiated by a two-mode electromagnetic wave consisting of a strong resonant dressing…