A5100741219- Quantum Information and Cryptography
- Neural Networks and Reservoir Computing
- Quantum Computing Algorithms and Architecture
- Topological Materials and Phenomena
- Photonic and Optical Devices
- Photonic Crystals and Applications
- Quantum Mechanics and Applications
- Quantum optics and atomic interactions
- Advanced Fiber Laser Technologies
- Quantum and electron transport phenomena
- Semiconductor Quantum Structures and Devices
- Orbital Angular Momentum in Optics
- Mechanical and Optical Resonators
- GaN-based semiconductor devices and materials
- Metamaterials and Metasurfaces Applications
- Optical Network Technologies
- Plasmonic and Surface Plasmon Research
- Quantum Mechanics and Non-Hermitian Physics
- Nonlinear Waves and Solitons
- Soft Robotics and Applications
- Advanced Sensor and Energy Harvesting Materials
- Nonlinear Photonic Systems
- Random lasers and scattering media
- Ga2O3 and related materials
- Advanced Optical Sensing Technologies
Peking University
2006-2025
University of Stuttgart
2024
State Key Laboratory of Artificial Microstructure and Mesoscopic Physics
2010-2021
Abstract Controlling and programming quantum devices to process information by the unit of dit, i.e., qudit, provides possibilities for noise-resilient communications, delicate molecular simulations, efficient computations, showing great potential enhance capabilities qubit-based technologies. Here, we report a programmable qudit-based processor in silicon-photonic integrated circuits demonstrate its enhancement computational parallelism. The monolithically integrates all key functionalities...
Abstract Graphs have provided an expressive mathematical tool to model quantum-mechanical devices and systems. In particular, it has been recently discovered that graph theory can be used describe design quantum components, devices, setups systems, based on the two-dimensional lattice of parametric nonlinear optical crystals linear circuits, different standard photonic framework. Realizing such graph-theoretical hardware, however, remains extremely challenging experimentally using...
Quantum networks provide the framework for quantum communication, clock synchronization, distributed computing, and sensing. Implementing large-scale practical relies on development of scalable architecture integrated hardware that can coherently interconnect many remote nodes by sharing multidimensional entanglement through complex-medium channels. We demonstrate a multichip network based mass-manufacturable integrated-nanophotonic node chips fabricated silicon wafer means complementary...
Controlling topological phases of light allows the observation abundant phenomena and development robust photonic devices. The prospect more sophisticated control with devices for practical implementations requires high-level programmability. Here we demonstrate a fully programmable chip large-scale integration silicon nanocircuits microresonators. Photonic artificial atoms their interactions in our compound system can be individually addressed controlled, allowing arbitrary adjustment...
Zero-index metamaterials exhibit a uniform spatial phase distribution, promising numerous applications such as efficient electromagnetic tunneling and high-fidelity optical computing. These necessitate an integrated, low-loss zero-index waveguide platform for guiding, routing, interfering light. Nevertheless, existing grapple with substantial footprints, high losses, limited flexibility. Here, we present nanoscale metawaveguides enabled by quasi-bound states in the continuum, formed through...
The generation of large-scale entangled states is crucial for quantum technologies, such as computation1, communication2 and metrology3. Integrated photonics that enables on-chip encoding, processing detection light offers a promising platform the manipulation states4,5. Generating entanglement between qubits encoded in discrete variables within single photons challenging, owing to difficulty making interact on photonic chips6–11. Devices operate with continuous are more promising, they...
Abstract Bohr’s complementarity is one central tenet of quantum physics. The paradoxical wave-particle duality matters and photons has been tested in Young’s double-slit (double-path) interferometers. object exclusively exhibits wave particle nature, depending measurement apparatus that can be delayed chosen to rule out too-naive interpretations complementarity. All experiments date have implemented the double-path framework, while it fundamental interest study multipath interferometric...
We designed, fabricated, and characterized a programmable qudit-based quantum processor on silicon. implemented several algorithms with qudits, showing the logarithmic speed-up, photon detection rate enhancement accuracy improvement in information processing.
We report flexible zero-index waveguides and devices whose loss is two orders of magnitude lower than the state art, enabling phase-error-free high-dense photonic integrated circuits for classical quantum information processing computing.
Quantum transport in materials describes the behavior of particles at quantum level. Topological exhibit nontrivial properties with topological invariants, leading to emergence protected states that are immune against disorders material boundaries. In many real-world materials, especially those anisotropic crystal structures, can vary significantly along different directions within bulk. Here, we experimentally observe counterintuitive phenomena insulators controllable anisotropy and...
Summary Two‐dimensional micro‐cylinder patterns of dodecagonal photonic quasi‐crystal (12‐PQC) and tetragonal crystal (2‐PC) were fabricated on the top surface a GaN light‐emitting diode (LED). The evaporated with 10‐nm‐thick Ag film. Spatially resolved emission was recorded analysed by scanning near‐field optical microscopy. Electromagnetic energy confined enhanced at when plasmon (SP) resonated. enhancement factor for 12‐PQC 1.9 times that 2‐PC, 8.6 non‐patterned LED in near field 6.7 far...
Magnetic force microscopy (MFM) observations have been performed on artificial structures of single-phase Ga0.962Mn0.038N grown by metal organic chemical vapor deposition, showing room-temperature long range magnetic order Ga0.962Mn0.038N. The MFM results agree well with the theoretical simulation under assumption uniform magnetization. ferromagnetism Ga1−xMnxN is suggested to be closely related configuration Mnn+ and Mn(n+1)+ (n=2,3). This work indicates potential effectively applying a...
Herein, the design, modeling, and validation of high‐flow, fluid‐driven, membrane valves tailored specifically for applications in soft robotic systems are described. Targeting piping problem hyper‐actuated robots, two fluid‐driven valve designs that can admit flows up to while weighing less than introduced. A mathematical model predict fluid flow by representing displacement as a scalar quantity influenced balance pressures applied across valve's ports is established. The incorporates six...
We present a new concept in freeform photonic optimization which resonances metasurfaces are directly engineered using the adjoint variables method. apply this strategy for designing nonlocal, chiral with high quality factors.
Zero-index metamaterials show the unique feature of uniform spatial phase distributions, enabling interaction single electromagnetic mode with matter over an infinite area in arbitrary shape. This brings various novel optical physics and devices, such as supercoupler, large-area single-mode laser, extended superradiance. However, state-of-the-art zero-index waveguide shows a propagation loss high 1000 dB/mm, hampering most potential applications metamaterials. Although based on bound state...
Controlling topological phases of light has allowed experimental observations abundant phenomena and development robust photonic devices. The prospect more sophisticated controls with devices for practical implementations requires high-level programmability. Here, we demonstrate a fully programmable chip large-scale integration silicon nanocircuits microresonators. Photonic artificial atoms their interactions in our compound system can be individually addressed controlled, therefore allowing...
<title>Abstract</title> Quantum vortices of light carrying orbital angular momentum stand as essential resources for quantum photonic technologies. Recent advancements in integrated photonics offer the potential to create and control using fully circuits, eliminating needs intricate free-space alignment, modulation, stabilization bulky optical elements. However, generating planar waveguides circuits poses challenges, owing complexities confining guiding twisted photons, importantly,...
We demonstrate an optimized Si 3 N 4 chip-based parametric photon-pair source via spontaneous four-wave mixing process. Nonlinear interference and dispersion engineering yield high spectral purity without compromising heralding efficiency, offering a solution for integrated sources with uniformity wavelength flexibility.
We demonstrate the capability of graph theory scheme to realize complex multiphoton multidimensional state. show generation quantum states based on was realized by reconfigurable integrated chip. The 4-photon 3-dimensional GHZ state generated and verified manipulated for first time.
We observe nonlinearity-driven fast NH phase transitions in a photonic Floquet topological insulator on silicon chip. Light that was forbidden bandgap can now be transported along gain-loss junction at which nonlinearity-controlled transition occurs.