Parity-time (PT) symmetry has been unveiling new photonic regimes in non-Hermitian systems, with opportunities for lasing, sensing and enhanced light-matter interactions. The most exotic responses emerge at the exceptional point (EP) and in the broken PT-symmetry phase, yet in conventional PT-sym...
Open physical systems with balanced loss and gain, described by non-Hermitian parity-time (PT) reflection symmetric Hamiltonians, exhibit a transition which could engender modes that exponentially decay or grow with time, and thus spontaneously breaks the PT-symmetry. Such PT-symmetry-breaking transit...
In the framework of non-Hermitian and open systems, parity-time (PT) symmetric and broken phases have been also exciting both the classical and quantum communities [24]. Finally, many-body-localized phases have gained a spotlight following a long-stretching series of proofs of their existence [...
by non-Hermitian parity-time $$\\left( {{\\cal P}{\\cal T}} ight)$$ P T reflection symmetric Hamiltonians, exhibit a transition which could engender modes that exponentially decay or grow with time, and thus spontaneously breaks the $${\\cal P}{\\cal T}$$ P T -symmetry. Such...
Here we report the experimental observation of a triple phase transition, where changing a single parameter simultaneously gives rise to a localization (metal–insulator), a topological and parity–time symmetry-breaking (energy) phase transition. The physics is manifested in a temporally driven (...
Li, J., Harter, A.K., Liu, J., de Melo, L., Joglekar, Y.N., Luo, L.: Observation of parity-time symmetry breaking transitions in a dissipative floquet system of ultracold atoms. Nat. Commun. 10(1), 855 (2019) Article ADS Google Scholar Wang, K., Qiu, X., Xiao, L., Zh...
We investigate a type of periodically driven non-Hermitian two-level model with parity-time (PT) symmetry. It is shown that in a wide range of the model parameters, this model supports exact Floquet solutions. In particular, under certain parameter conditions, these exact Floquet solutions can ...
Breaking time or/and spatial symmetry can lead to unprecedent mechanical responses of a structure, the design of which is usually very intricate. This pape... Y Yuan,WQ Chen - 《Journal of Sound & Vibration》 被引量: 0发表: 2024年 Analytical formulation of spatiotemporal modulated graphene-ba...
Various exotic topological phases of Floquet systems have been shown to arise from crystalline symmetries. Yet, a general theory for Floquet topology that is applicable to all crystalline symmetry groups is still in need. In this work, we propose such a
In this work, we demonstrated a mechanism for realizing electronic liquids crystals in two-dimensional electronic systems through time-periodic driving. The phase that we find exhibits GFN order associated with the spontaneous breaking of U(1) symmetry in both pseudospin and orbital degrees of freedom...