The combination of broken Hermiticity and band topology in physical systems unveils a novel bound state dubbed as the non-Hermitian skin effect (NHSE). Active control that breaks reciprocity is usually used to achieve NHSE, and gain and loss in energy are inevitably involved. Here, we ...
Non-Hermitian singularities are ubiquitous in non-conservative open systems. Owing to their peculiar topology, they can remotely induce observable effects when encircled by closed trajectories in the parameter space. To date, a general formalism for desc
In the quasistatic limit, however, quantum work can still be defined, and we have shown that the second law still holds for all pseudo-hermitian systems. Conclusions In summary, we have carefully studied thermodynamic properties of quantum systems that do not satisfy one of the basic ...
One intriguing aspect of non-Hermitian models is their inherent topology that can produce intriguing boundary phenomena like resilient higher-order topological insulators (HOTIs) and non-Hermitian skin effects (NHSE). Recently, time-multiplexed lattices in synthetic dimensions have emerged as a versatile...
However, discussions and experiments focused on these topics have primarily been confined to static and geometrically symmetric coupled systems without detuning. Detuning denotes the resonant mismatch of coupled systems, which is one of the intrinsical sensing targets, particularly in recently emerging non...
Our work thus introduces a new type of non-Hermitian Floquet topological matter, and further reveals the richness of topology and dynamics in driven open systems. Keywords: non-hermitian system; floquet system; topological phase; dynamics1. Introduction Non-Hermitian states of matter have attracted ...