Publications (18)
Passive cell body plays active roles in microalgal swimming via nonreciprocal interactions
Xiaoping Hu, Zhaorong Liu, Da Wei +1
The cell body of flagellated microalgae is commonly considered to act merely as a passive load during swimming, and a larger body size would simply reduce the speed. In this work,…
Wavelength-switchable ultra-narrow linewidth fiber laser enabled by a figure-8 compound-ring-cavity filter and a polarization-managed four-channel filter
Ting Feng, Da Wei, Wenwen Bi +6
We propose and demonstrate a high performance four-wavelength erbium-doped fiber laser (EDFL), enabled by a figure-8 compound-ring-cavity (F8-CRC) filter for single-longitudinal-mo…
Fabrication and characterization of an undoped GaAs/AlGaAs quantum dot device
Hai-Ou Li, Gang Cao, Ming Xiao +6
We demonstrate the development of a double quantum dot with an integrated charge sensor fabricated in undoped GaAs/AlGaAs heterostructures using a double top-gated design. Based on…
The younger flagellum coordinates the beating in C. reinhardtii
Da Wei, Greta Quaranta, Marie-Eve Aubin-Tam +1
Eukaryotes swim with coordinated flagellar (ciliary) beating and steer by fine-tuning the coordination. The model organism for studying flagellate motility, C. reinhardtii (CR), em…
Coherent Turning Behaviors Revealed Across Adherent Cells
Yiyu Zhang, Xiaoyu Yu, Boyuan Zheng +4
Adherent cells have long been known to display two modes during migration: a faster mode that is persistent in direction and a slower one where they turn. Compared to the persisten…
Biomimetic Synchronization in biciliated robots
Yiming Xia, Zixian Hu, Da Wei +3
Direct mechanical coupling is known to be critical for establishing synchronization among cilia. However, the actual role of the connections is still elusive - partly because contr…
Modeling bacterial flow field with regularized singularities
Yaochen Yang, Daiki Matsunaga, Da Wei +1
The flow field generated by a swimming bacterium serves as a fundamental building block for understanding hydrodynamic interactions between bacteria. Although the flow field genera…
Scaling transition of active turbulence from two to three dimensions
Da Wei, Yaochen Yang, Xuefeng Wei +4
Turbulent flows are observed in low-Reynolds active fluids. They are intrinsically different from the classical inertial turbulence and behave distinctively in two- and three-dimen…
Kondo induced Ï-phase shift of microwave photons in a circuit quantum electrodynamics architecture
Guang-Wei Deng, Loic Henriet, Da Wei +7
Mesoscopic systems constitute appealing platforms to study many-body physics with light and matter degrees of freedom. The Kondo effect refers to the screening of a spin-1/2 impuri…
Confinement reduces surface accumulation of swimming bacteria
Da Wei, Shiyuan Hu, Tangmiao Tang +3
Many swimming bacteria naturally inhabit confined environments, yet how confinement influences their swimming behaviors remains unclear. Here, we combine experiments, continuum mod…
Broadband tunable narrow-linewidth laser based on scattering-enhanced fiber covering E-S-C-L bands
Minzhi Xu, Zechun Geng, Da Wei +9
This work demonstrates a broadband tunable narrow-linewidth laser based on scattering-enhanced fiber, covering the E-S-C-L wavelength bands from 1337.47 nm to 1631.39 nm, with a to…
Charge Number Dependence of the Dephasing Rates of a Graphene Double Quantum Dot in a Circuit QED Architecture
Guang-Wei Deng, Da Wei, J. R. Johansson +10
We use an on-chip superconducting resonator as a sensitive meter to probe the properties of graphene double quantum dots at microwave frequencies. Specifically, we investigate the…
Tuning inter-dot tunnel coupling of an etched graphene double quantum dot by adjacent metal gates
Da Wei, Hai-Ou Li, Gang Cao +7
Graphene double quantum open the possibility to use charge or spin degrees of freedom for storing and manipulating quantum information in this new electronic material. However, imp…
Gates controlled parallel-coupled double quantum dot on both single layer and bilayer graphene
Lin-Jun Wang, Guo-Ping Guo, Da Wei +5
Here we report the fabrication and quantum transport measurements of gates controlled parallel-coupled double quantum dot on both bilayer and single layer graphene. It is shown tha…
Moment analysis of two-dimensional active Brownian run-and-tumble particles
Aoran Sun, Da Wei, Yiyu Zhang +2
We study an active Brownian run-and-tumble particle (ABRTP) model, that consists of an active Brownian run state during which the active velocity of the particle diffuses on the un…
Coupling two distant double quantum dots to a microwave resonator
Guang-Wei Deng, Da Wei, Shu-Xiao Li +9
With recent advances in the circuit quantum electrodynamics (cQED) architecture, hybrid systems that couple nano-devices to microwave resonators have been developing rapidly. Here…
Hybrid integrated narrow linewidth semiconductor laser based on the distributed feedback from an external deformed microcavity
Da Wei, Leilei Shi, Yujia Li +8
Optical microcavities with rotational symmetry have been widely used for narrowing linewidth and reducing frequency noise, however, the narrow but wavelength dependent optical feed…
Hybrid integrated narrow linewidth laser with external distributed optical feedback from a silicon strip waveguide
Da Wei, Leilei Shi, Yujia Li +8
External optical feedback via Rayleigh scattering from an integrated microresonator or an optical fiber has been demonstrated to significantly narrow the intrinsic linewidth of sem…