A5055248042- Quantum Information and Cryptography
- Spectroscopy and Quantum Chemical Studies
- Quantum chaos and dynamical systems
- Laser-Matter Interactions and Applications
- Quantum Mechanics and Non-Hermitian Physics
- Advanced Fiber Laser Technologies
- Quantum, superfluid, helium dynamics
- Quantum Mechanics and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Photonic Crystals and Applications
- Mechanical and Optical Resonators
- Laser-induced spectroscopy and plasma
- Ion-surface interactions and analysis
- Mass Spectrometry Techniques and Applications
- Advanced Chemical Physics Studies
- Phase-change materials and chalcogenides
- Laser Material Processing Techniques
- Solid State Laser Technologies
- Advanced Semiconductor Detectors and Materials
- Atomic and Subatomic Physics Research
- Scientific Measurement and Uncertainty Evaluation
- Glass properties and applications
- Spectroscopy and Laser Applications
- Atomic and Molecular Physics
- Nonlinear Optical Materials Research
Renmin University of China
2021-2024
East China Normal University
1990-2009
Shanghai Municipal Education Commission
1999
Queen's University Belfast
1999
Shanghai Institute of Optics and Fine Mechanics
1993
Exceptional points (EPs) of a non-Hermitian Hamiltonian with parity-time-reversal $(\mathcal{P}\mathcal{T})$ symmetry have the potential to drastically enhance capabilities metrology and sensing through their power-law growing sensitivity external perturbation. With ability generating tuning dissipation in single trapped ion system, we observe rich dynamics detailed quantum phase transitions from $\mathcal{P}\mathcal{T}$-symmetric symmetry-breaking phase. In this qubit full develop method...
Non-Hermitian systems with parity-time reversal ($\mathcal{PT}$) or anti-$\mathcal{PT}$ symmetry have attracted a wide range of interest owing to their unique characteristics and counterintuitive phenomena. One the most extraordinary features is presence an exception point (EP), across which phase transition spontaneously broken $\mathcal{PT}$ takes place. We implement Floquet Hamiltonian single qubit by periodically driving dissipative quantum system trapped ion. With stroboscopic emission...
We reported three types of complex micro/nanostructures on 6H-SiC crystal induced by the interferences femtosecond laser beams arranging polarization combinations. The are composed two parts: two-dimensional long-periodic micropatterns determined interferential intensity pattern and short-periodic nanopatterns pattern. Theoretical calculation indicates that different combinations will lead to a distinct pattern, they accord well with experimental results.
Abstract Whether the observables of a physical system admit real values is fundamental importance to deep understanding nature. In this work, we report device-independent experiment confirm that joint reality two on single two-level incompatible with assumption operational completeness, which strictly weaker than preparation noncontextuality. We implement trapped <?CDATA $^{171}\textrm{Yb}^{+}$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msup> <mml:mi...
We introduce a novel time-division multiplexing differential saturated absorption spectroscopy (TDMDSAS) approach, providing superior accuracy and stability in Doppler-free spectroscopy. By distinguishing probe reference fields the temporal domain, TDMDSAS efficiently suppresses Doppler broadening common-mode optical noise. utilized this technology to determine absolute frequency of diverse neutral Yb isotopes across its $6s^2\ ^{1}S_0\to 6s6p ^{1}P_1$ transitions. Furthermore, first-ever...
In this paper, the methods of preparation Ge-Se-Sb glasses with low impurity content were developed, and a large Ge-Sb-Se glass rod (φ85×80mm) good quality was obtained. The physical optical properties measured. homogeneity (Δn) at 2μm different places inside same bulk less ±2×10<sup>-4</sup>. order to accurately evaluate infrared resolution our prepared glass, lens f 19mm F/#1.3 used evalue its modulation transfer function (MTF) performance. MTF value 20cycles/mm for 20°C...
Exploring quantum phenomena beyond predictions of any classical model has fundamental importance to understand the boundary and descriptions nature. As a typical property that system behaves distinctively from counterpart, contextuality been studied extensively verified experimentally in systems composed at least three levels (qutrit). Here we extend scope experimental test minimal only two states (qubit) by implementing minimum error state discrimination on single $^{171}$Yb$^+$ ion. We...
On the basis of quantum dynamics laser–ion interaction beyond Lamb–Dicke limit, we show how macroscopic states, typically, e.g., even/odd coherent a single trapped cold ion can be effectively approached via superpositions motional Fock states generated from ground state. The fidelity and experimental realizability this approach are discussed.
Measuring physical quantities with unprecedented precision is one of the most important paradigms to extend our fundamental understanding nature. With development new quantum techniques, systems have become a promising platform along path pursue higher accuracy and stability measurement, while classical methods are approaching their own limitation. Owing its high stability, long coherence time good controllability states, trapped ion system has attracted much attention as for metrology....
Photonic crystal filaments were demonstrated with noncollinear interaction, resulting in elongated and third harmonic generation of more than two orders enhancement as compared that from a single filament.
Electron emission number statistics have been measured for 8 keV H+ ions in collisions with clean polycrystalline copper at 80 degrees and 67 degrees. Also, a new development, electron recorded reflected particles using coincidences between the emitted electrons. The results of both coincidence non–coincidence measurements fitted Polya distributions higher mean value case. A model has developed to interpret difference statistics.
Whether the observables of a physical system admit real values is fundamental importance to deep understanding nature. In this work, we report device-independent experiment confirm that joint reality two on single two-level incompatible with assumption operational completeness, which strictly weaker than preparation noncontextuality. We implement trapped $^{171}{\rm Yb}^{+}$ ion test incompatibility via violation certain inequalities derived from both linear and nonlinear criteria. Moreover,...
We have measured the electron emission statistics for Xe+ and Xe10+ ions incident on clean polycrystalline copper at grazing angles of 10 23. The probability no has been measured. experimental data 2–10 keV is well described by binomial distributions. For total yield determined. potential kinetic components deduced.