43 citations · 203 across the 25 of their papers we have counts for
25 papers
Self-enhanced coherent harmonic amplification in seeded free-electron lasers
Hanxiang Yang, Jiawei Yan, Haixiao Deng
High-intensity, ultrashort, fully coherent X-ray pulses hold great potential for advancing spectroscopic techniques to unprecedented levels. Here, we propose a novel scheme for gen…
Dynamical mean-field approach to disordered interacting systems and applications to quantum transport problem
Jiawei Yan, Philipp Werner
We discuss a non-equilibrium dynamical mean-field framework for simulating inhomogeneous Hubbard models with local disorders. Our approach treats electron interactions and disorder…
Self-Seeded Free-Electron Lasers with Orbital Angular Momentum
Jiawei Yan, Gianluca Geloni
X-ray beams carrying orbital angular momentum (OAM) are an emerging tool for probing matter. Optical elements, such as spiral phase plates and zone plates, have been widely used to…
High-repetition-rate seeded free-electron laser enhanced by self-modulation
Hanxiang Yang, Jiawei Yan, Haixiao Deng
Recently, the self-modulation scheme of a weakly pre-bunched electron beam has been proposed [Yan et al., Physical Review Letters 126, 084801 (2021)], which is of great promise for…
Optimization and stability analysis of the cascaded EEHG-HGHG free-electron laser
Hanxiang Yang, Jiawei Yan, Zihan Zhu +1
X-ray free-electron lasers (XFELs) are powerful tools to explore and study nature for achieving remarkable advances. Generally, seeded FELs are ideal sources for supplying full coh…
Physics-informed graph neural networks enhance scalability of variational nonequilibrium optimal control
Jiawei Yan, Grant M. Rotskoff
When a physical system is driven away from equilibrium, the statistical distribution of its dynamical trajectories informs many of its physical properties. Characterizing the natur…
Failure of the mean-field description of magnetic fluctuations in the superconducting quantum dot
Václav Janiš, Jiawei Yan
The zero-temperature physics of interacting quantum dots attached to superconducting leads is now well understood. The overall qualitative picture is obtained from the static mean-…
Inhibition of Current-spike Formation Based on Longitudinal Phase Space Manipulation for High-Repetition-Rate X-ray FEL
Zihan Zhu, Duan Gu, Jiawei Yan +5
The formation of a double-horn current profile is a challenging issue in the achievement of electron bunch with high peak current, especially for high-repetition-rate X-ray free-el…
Single impurity Anderson model out of equilibrium: A two-particle semi-analytic approach
Jiawei Yan, Václav Janiš
We apply a two-particle semi-analytic approach to a single Anderson impurity attached to two biased metallic leads. The theory is based on reduced parquet equations justified in cr…
Many-Objective Beam Dynamics Optimization for High-Repetition-Rate XFEL Photoinjector
Zihan Zhu, Jiawei Yan, Duan Gu +1
SHINE, as the first hard x-ray free-electron-laser (FEL) facility in China, is designed to provide high-brightness FEL lasing under high-repetition-rate operation mode. In order to…
Many-body perturbation theory for the superconducting quantum dot: Fundamental role of the magnetic field
Václav Janiš, Jiawei Yan
We develop the general many-body perturbation theory for a superconducting quantum dot represented by a single-impurity Anderson model attached to superconducting leads. We build o…
Antiferromagnetic fluctuations in the one-dimensional Hubbard model
Václav Janiš, Antonín Klíč, Jiawei Yan
We study the low-temperature critical behavior of the one-dimensional Hubbard model near half filling caused by enhanced antiferromagnetic fluctuations. We use a mean-field-type ap…
First observation of laser-beam interaction in a dipole magnet
Jiawei Yan, Nanshun Huang, Haixiao Deng +3
As a new-generation light source, free-electron lasers (FELs) provide high-brightness X-ray pulses at the angstrom-femtosecond space and time scales. The fundamental physics behind…
Self-Amplification of Coherent Energy Modulation in Seeded Free-Electron Lasers
Jiawei Yan, Zhangfeng Gao, Zheng Qi +23
The spectroscopic techniques for time-resolved fine analysis of matter require coherent X-ray radiation with femtosecond duration and high average brightness. Seeded free-electron…
Energy recovery operation for continuous-wave X-ray free-electron lasers
Guanglei Wang, Jiawei Yan, Nanshun Huang +7
A superconducting linear accelerator operating in continuous-wave mode could produce X-ray free electron lasers (XFEL) at megahertz repetition rate, with the capability that delive…
Curie-Weiss susceptibility in strongly correlated electron systems
Václav Janiš, Antonín Klíč, Jiawei Yan +1
The genesis of the Curie-Weiss magnetic response observed in most transition metals that are Fermi liquids at low temperatures has been an enigma for decades and has not yet been f…
Multi-beam-energy operation for the continuous-wave x-ray free electron laser
Jiawei Yan, Haixiao Deng
The parallel operation of multiple undulator lines with a wide spectral range is an important way to increase the efficiency of x-ray free electron laser (XFEL) facilities, especia…
Achievability of thermodynamic uncertainty relations
Jiawei Yan
The thermodynamic uncertainty relations provide a universal trade-offs between entropy dissipation rate and fluctuations in transport current. This relation has been mostly used to…
Proposal of X-ray absorption spectroscopy and magnetic circular dichroism using broadband free-electron lasers
Bangjie Deng, Jiawei Yan, Qingmin Zhang +2
X-ray free-electron lasers (XFELs) have been widely used for applications such as X-ray crystallography and magnetic spin probes because of their unprecedented performance. Recentl…
Generation of large-bandwidth x-ray free electron laser with Evolutionary Many-Objective Optimization Algorithm
Jiawei Yan, Haixiao Deng
X-ray free-electron lasers (XFELs) are cutting-edge scientific instruments for a wide range of disciplines. Conventionally, the narrow bandwidth is pursued in an XFEL. However, in…
Atomic inner-shell radiation seeded free-electron lasers
Han Zhang, Kai Li, Jiawei Yan +2
In order to effectively improve the output quality of X-ray free electron laser (XFEL), we theoretically propose an XFEL scheme seeded by atomic inner-shell laser. As well known, a…
High brightness fully coherent X-ray amplifier seeded by a free-electron laser oscillator
Kai Li, Jiawei Yan, Chao Feng +2
X-ray free-electron laser oscillator (XFELO) is expected to be a cutting edge tool for fully coherent X-ray laser generation, and undulator taper technique is well-known for consid…
Bandwidth broadening of X-ray free electron laser with the natural gradient of planar undulator
Minghao Song, Jiawei Yan, Kai Li +2
Besides the target to pursue the narrow bandwidth X-ray pulses, the large bandwidth free-electron laser pulses are also strongly demanded to satisfy a wide range of scientific user…
Bandwidth broadening of X-ray free electron laser pulses with the natural gradient of planar undulator
Minghao Song, Kai Li, Jiawei Yan +3
Besides the target to pursue the narrow bandwidth X-ray pulses, the large bandwidth free-electron laser pulses are also strongly demanded to satisfy a wide range of scientific user…