3 papers
quant-ph2025
Phase transitions and spectral singularities in a class of one-dimensional parity-time-symmetric complex potentials
Jinlin Fan, Feilong Wang, Ruolin Chai Zhibin Zhao +1
We investigate a two-parametric family of one-dimensional non-Hermitian complex potentials with parity-time () symmetry. We find that there exist two distinct types o…
cond-mat.quant-gas2025
Bistability and Exact Reflectionless States in Nonlinear Scattering of a Bose--Einstein Condensate
Feilong Wang, Jinlin Fan, Ruolin Chai +2
We investigate the mean-field scattering dynamics of a quasi-one-dimensional Bose--Einstein condensate interacting with a Rosen--Morse potential. For specific potential and nonline…
quant-ph2025
Photon Routing Induced by Giant Atoms in a Synthetic Frequency Dimension
Ruolin Chai, Guoqing Cai, Qiongtao Xie +2
We propose a hardware-efficient photon routing scheme based on a dynamically modulated multi-mode ring resonator and a driven cyclic three-level artificial atom, which effectively…