Publications (13)
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…
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…
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…
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…
On-chip Amorphous THz Topological Photonic Interconnects
Rimi Banerjee, Abhishek Kumar, Thomas Tan Caiwei +6
Valley Hall photonic crystals (VPCs) offer the potential to create topological waveguides capable of guiding light through sharp bends on a chip. They can seamlessly integrate with…
Switchable Non-Hermitian Skin Effect in Bogoliubov Modes
Hsuan Lo, You Wang, Rimi Banerjee +2
Interacting or nonlinear lattices can host emergent particle-like modes, such as Bogoliubov quasiparticles, whose band topology and other properties are potentially highly tunable.…