A5031637849- Quantum many-body systems
- Quantum Mechanics and Non-Hermitian Physics
- Quantum and electron transport phenomena
- Quantum chaos and dynamical systems
- Quantum Information and Cryptography
- Nonlinear Photonic Systems
- Noncommutative and Quantum Gravity Theories
- Quantum optics and atomic interactions
- Spectroscopy and Quantum Chemical Studies
- Opinion Dynamics and Social Influence
- Topological Materials and Phenomena
- Cold Atom Physics and Bose-Einstein Condensates
Czech Academy of Sciences, Institute of Physics
2025
Chinese Academy of Sciences
2023-2025
Institute of Physics
2023
Collaborative Innovation Center of Advanced Microstructures
2021-2022
Nanjing University
2021-2022
The complete geometry of quantum states in parameter space is characterized by the geometric tensor, which contains metric and Berry curvature as real imaginary parts, respectively. When are degenerate, take non-Abelian forms. (Abelian) Abelian have been experimentally measured. However, an feasible scheme to extract all components tensor still lacking. Here we propose a generic protocol directly arbitrary degenerate any dimensional based on measuring transition probabilities after quenches....
We study the damping dynamics of single-particle correlation for an open system under periodic and aperiodic order, which is dominated by Lindblad master equation. In absence Liouvillian superoperator exhibits non-Hermitian skin effect, leads to unidirectional dynamics, dubbed as "chiral damping". Due boundary sensitive: The long-time such systems algebraic conditions but exponential conditions. reveal phase transition with inclusion hopping amplitude modulation. By using spectral topology a...
In this work, we investigate the quantum phase transition in a non-Hermitian XY spin chain. The diagram shows that critical points of Ising expand into zone after introducing effect. By analyzing gap and long-range correlation function, one can distinguish different phases by means features decay properties tricky problem traditional model. Furthermore, results reveal relationship among regions diagram, energy function.
We propose a scheme for converting microwave (mw) single photon in mw cavity to flying optical photon. The conversion is realized by using circular Rydberg atom, which plays role of the “data bus” as an excellent memory connect and cavities. To link energy levels atom domain domain, we use fast decircularization method three-photon Raman transition method. Thank these low loss processes super long lifetime states, this can efficiently convert photons into domain. Based on existing...
Although flat-band structures have been the subject of intensive studies in condensed-matter and optical physics due to their eigenstates, which exhibit huge degeneracy allow for localization wave packets, it is not clear how Liouvillian flat band influences relaxation dynamics open quantum systems. To this end, we study dynamical signatures scheme Lindblad master equation. Considering a chain model with gain loss, demonstrate three kinds dispersion: (i) band, (ii) dispersionless real part,...
We introduce a non-linear Lindblad master equation to describe the postselection dynamics of open quantum systems described by equation, which continuously interpolates between and dynamical governed an effective non-Hermitian Hamiltonian. Within framework we study prototypical model demonstrate existence postselected skin effect with distribution steady state characterized accumulation particles on one side, as long some jumping terms are discarded postselction processes. Moreover, show...