A5044479783- Quantum Mechanics and Non-Hermitian Physics
- Quantum Information and Cryptography
- Quantum Computing Algorithms and Architecture
- Quantum Mechanics and Applications
- Quantum chaos and dynamical systems
- Topological Materials and Phenomena
- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
- Neural Networks and Reservoir Computing
- Orbital Angular Momentum in Optics
- Optical Network Technologies
- Quantum-Dot Cellular Automata
- Laser-Matter Interactions and Applications
Beijing Institute of Technology
2022-2024
Abstract Exceptional points (EPs) are non‐Hermitian degeneracies or branch where eigenvalues and their corresponding eigenvectors coalesce. Due to the complex non‐trivial topology of Riemann surfaces associated with Hamiltonians, dynamical encirclement proximity EPs in parameter space has been shown lead topological mode conversions some novel physical phenomena. In fact, can also form continuous line geometries, which called exceptional lines (ELs). The problem is whether state transfer...
The robust operation of quantum entanglement states is crucial for applications in information, computing, and communications1-3. However, it has always been a great challenge to complete such task because decoherence disorder. Here, we propose theoretically demonstrate experimentally an effective scheme realize by designing quadruple degeneracy exceptional points. By encircling the points on two overlapping Riemann energy surfaces, have realized chiral switch entangled with high fidelity....
Abstract Realization of robust transmission and transformation entangled states with high fidelity is crucial for the applications in quantum information, computing, communications. However, it hard to achieve currently because scattering loss disorder. Here, an inverse‐design scheme theoretically proposed experimentally demonstrated realize nearly perfect photon states. The based on determination properties states, which depends overlap integrals among initial eigenmodes system target Thus,...
The study of non-Hermitian systems has attracted more and attention, because physical properties in many real should be described by Hamiltonians. Due to the existence absorption dissipation, transmission transformation entangled states with high fidelity are very difficult realize systems. How these dissipative becomes an open problem. Here we provide inverse design scheme for topologically protected channels solve such a From our scheme, can designed according requirements overlap...
Quantum computing holds promise across various fields, particularly with the advent of Noisy Intermediate-Scale (NISQ) devices, which can outperform classical supercomputers in specific tasks. However, challenges such as noise and limited qubit capabilities hinder its practical applications. Variational Algorithms (VQAs) offer a viable strategy to achieve quantum advantage by combining computing. Leveraging on VQAs, performance Classifiers (VQCs) is competitive many classifiers. This work...
The robust operation of quantum entanglement states are crucial for applications in information, computing, and communications1-3. However, it has always been a great challenge to complete such task because decoherence disorder. Here, we propose theoretically demonstrate experimentally an effective scheme realize by designing quadruple degeneracy exceptional points. By encircling the points on two overlapping Riemann energy surfaces, have realized chiral switch entangled with high fidelity....