Zobrazeno 1 - 10
of 475
pro vyhledávání: '"Wu, Jin-Hui"'
Dense atom ensembles with Rydberg excitations display intriguing collective effects mediated by their strong, long-range dipole-dipole interactions. These collective effects, often modeled using Rydberg superatoms, have gained significant attention a
Externí odkaz:
http://arxiv.org/abs/2404.05330
The generation of the narrowband strong-correlated biphotons via spontaneous four-wave mixing can be effectively controlled and enhanced by an additional driving field which drives a transition with its upper level being a Rydberg state. We study the
Externí odkaz:
http://arxiv.org/abs/2402.12894
We propose a scheme for realizing broadband and tunable transmission non-reciprocity by utilizing two-photon near-resonant transitions in thermal atoms as single-photon far-detuned transitions can be eliminated. Our basic idea is to largely reduce th
Externí odkaz:
http://arxiv.org/abs/2402.06113
Two interacting Rydberg atoms coupled to a waveguide realize a giant-atom platform that exhibits the controllable (phase-dependent) chirality where the direction of nonreciprocal photon scattering can be switched on demand, e.g., by the geometrical t
Externí odkaz:
http://arxiv.org/abs/2312.12733
Publikováno v:
Phys. Rev. A 108, 053716 (2023)
We investigate the two-channel nonreciprocal scattering of a coherent atomic ensemble under the linear spatial Kramers-Kronig modulation, which has potential applications in chiral phase modulation and broadband coherent perfect/asymmetric absorber t
Externí odkaz:
http://arxiv.org/abs/2310.00590
Giant atoms are attracting interest as an emerging paradigm in the quantum optics of engineered waveguides. Here we propose to realize a synthetic giant atom working in the optical regime starting from a pair of interacting Rydberg atoms driven by a
Externí odkaz:
http://arxiv.org/abs/2304.14713
We study in this paper the decay dynamics of a two-level giant atom, which is coupled to a quasi-one-dimensional sawtooth lattice exposed to uniform synthetic magnetic fluxes. In the case where the two sublattices have a large detuning, the giant ato
Externí odkaz:
http://arxiv.org/abs/2212.04208
Recent years have witnessed a hot wave of deep neural networks in various domains; however, it is not yet well understood theoretically. A theoretical characterization of deep neural networks should point out their approximation ability and complexit
Externí odkaz:
http://arxiv.org/abs/2210.15279
Recent years have emerged a surge of interest in SNNs owing to their remarkable potential to handle time-dependent and event-driven data. The performance of SNNs hinges not only on selecting an apposite architecture and fine-tuning connection weights
Externí odkaz:
http://arxiv.org/abs/2207.04876
Publikováno v:
Opt. Express 30, 20088-20099 (2022)
We propose two non-Hermitian arrays consisting of $N=2l+1$ waveguides and exhibiting parity-time ($\mathcal{PT}$) or anti-$\mathcal{PT}$ symmetry for investigating light transfer dynamics based on $N$th-order exceptional points (EPs). The $\mathcal{P
Externí odkaz:
http://arxiv.org/abs/2205.07566