9 papers
Weak ergodicity breaking without nonthermal eigenstates
Boning Huang, Yongguan Ke, Li Zhang +2
The typical mechanisms of ergodicity breaking in isolated interacting quantum systems, such as many-body localization and quantum many-body scars, originate from the nonthermal nat…
Correlated dynamics of three-particle bound states induced by emergent impurities in Bose-Hubbard model
Wenduo Zhao, Boning Huang, Yongguan Ke +1
Bound states, known as particles tied together and moving as a whole, are profound correlated effects induced by particle-particle interactions. While dimer-monomer bound states ar…
Localization and scattering of a photon in quasiperiodic qubit arrays
Xinyin Zhang, Yongguan Ke, Zhengzhi Peng +4
We study the localization and scattering of a single photon in a waveguide coupled to qubit arrays with quasiperiodic spacings. As the quasiperiodic strength increases, localized s…
Extending Qubit Coherence Time via Hybrid Dynamical Decoupling
Qi Yao, Jun Zhang, Wenxian Zhang +1
Dynamical decoupling (DD) and bath engineering are two parallel techniques employed to mitigate qubit decoherence resulting from their unavoidable coupling to the environment. Here…
Photonic scattering in 2D waveguide QED: Quantum Goos-Hänchen shift
Yongguan Ke, Zhenzhi Peng, Muhib Ullah +1
Quantum emitters coupled to traveling photons in waveguides, known as waveguide quantum electrodynamics (WQED), offer a powerful platform for understanding light-matter interaction…
Diagnosing Floquet Chern and anomalous topological insulators based on Bloch oscillations
Maowu Zuo, Yongguan Ke, Zhoutao Lei +1
It is challenging to distinguish Floquet Chern insulator (FCI) and Floquet anomalous topological insulator (FATI) because of their common features of chiral edge states and far awa…