A5102713146- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Quantum optics and atomic interactions
- Quantum Information and Cryptography
- High-Energy Particle Collisions Research
- Atomic and Subatomic Physics Research
- Mechanical and Optical Resonators
- Cold Atom Physics and Bose-Einstein Condensates
- Dark Matter and Cosmic Phenomena
- Photonic and Optical Devices
- Laser-Matter Interactions and Applications
- Optical and Acousto-Optic Technologies
- Advanced NMR Techniques and Applications
- Computational Physics and Python Applications
- Neutrino Physics Research
- Quantum Mechanics and Applications
- Quantum and electron transport phenomena
- Particle Detector Development and Performance
- Advanced MRI Techniques and Applications
- Cosmology and Gravitation Theories
- NMR spectroscopy and applications
- CCD and CMOS Imaging Sensors
- Force Microscopy Techniques and Applications
- Crystallography and Radiation Phenomena
- Coal and Its By-products
Beijing Automation Control Equipment Institute
2018-2025
China Aerospace Science and Industry Corporation (China)
2019-2025
Beijing Academy of Quantum Information Sciences
2025
Northwest Normal University
2019-2022
Ministry of Education of the People's Republic of China
2022
Nankai University
2022
Max Planck Institute of Quantum Optics
2014-2018
Max Planck Society
2016
Beijing Institute of Technology
2014
Chinese Academy of Sciences
2009-2012
We study how an oscillating mirror affects the electromagnetically induced transparency (EIT) of atomic ensemble confined in a gas cell, which is placed inside microcavity with one end. The cavity field acts as probe EIT system and also produces light pressure on mirror. back-action from to results several (from five) steady-states for this atom-assisted optomechanical cavity, producing complex structure its EIT. multiequilibrium positions have been calculated, then susceptibility studied...
We study the scattering of individual photons by a two-level system ultrastrongly coupled to waveguide. The is elastic for broad range couplings and can be described with an effective U(1)-symmetric Hamiltonian. This simple model allows prediction resonance line shapes, validated up α=0.3, close Toulouse point α=1/2, where inelastic becomes relevant. Our predictions experiments superconducting circuits [P. Forn-Díaz et al., Nat. Phys. 13, 39 (2017)NPAHAX1745-247310.1038/nphys3905] extended...
The advent of x-ray free electron lasers (XFELs) has opened the door to exploring x-ray-nuclei interaction in multiexcitation regime. Here, we show dependence emission properties photons from an ensemble identical resonant nuclei on number excitations system, employing theoretical methods have introduced. Under condition, detection quanta is emission-order selective. Our work presents efficient approach investigating multiphoton x-rays cooperative within and beyond weak-excitation regimes,...
The development, characterization, and control of N-photon sources are instrumental for quantum technological applications. This work constitutes a step forward in this direction, where we propose cavity electrodynamics setup designed the generation photon pairs. We identify both regime our system works as deterministic down-converter single input an optimal two-photon source under weak continuous driving. use scattering master equation formalisms to characterize system, from their...
We analyse e+e−→ττγ events using 100pb−1 of data collected by the L3 experiment during 1991-1995 LEP runs at Z pole. From energy photons and their isolation from tau decay products, we determine anomalous magnetic electric dipole moments to be, respectively: aτ=0.004±0.027±0.023;dτ=(0.0±1.5±1.3)×10−16e·cm.This is a direct measurement these τ form factors q2=0.
A resonant two-level atom doped in a one-dimensional waveguide behaves as mirror, but this single-atom ``mirror'' can only reflect single photons perfectly at specific frequency. For coupled-resonator waveguide, we propose to extend the perfect-reflection region from frequency point wide band by placing many atoms individually resonators finite coordinate of waveguide. Such resonator array promises control propagation practical photon wave packet with certain momentum distribution instead...
Assembly planning refers to the task where planners arrange a specific assembly sequence according product design description as well their particular heuristics in putting together all components of product. In planning, one needs take into consideration relationships between such geometric limitation factor before precedence is set up for assembly. This deliberation will contribute strongly lower production cost. Unlike traditional studies liaison graph goes with genetic algorithm, an...
We study the coherent transport of a single photon in one-dimensional coupled-resonator array, nonlocally coupled to two-level system. Since its inherent structure is Mach-Zehnder interferometer, we explain destructive interference phenomenon transmission spectra according effect which-way detection. The quantum realization present model nanoelectromechanical resonator array with two nearest resonators spin via their attached magnetic tips. Its classical simulation waveguide coupled-defected...
We present an active fiber-based retroreflector providing high quality phase-retracing anti-parallel Gaussian laser beams for precision spectroscopy of Doppler sensitive transitions. Our design is well-suited a number applications where implementing optical cavities technically challenging and corner cubes fail to match the demanded requirements, most importantly retracing wavefronts preservation polarization. To illustrate performance system, we use it 2S-4P transition in atomic hydrogen...
The cross section of W-boson pair-production is measured with the L3 detector at LEP. In a data sample corresponding to total luminosity 629.4 pb−1, collected centre-of-mass energies ranging from 189 209 GeV, 9834 four-fermion events W bosons decaying into hadrons or leptons are selected. precision 1.4% and agrees Standard Model expectation. Assuming charged-lepton universality, branching fraction for hadronic decays be: Br(W→hadrons)=67.50±0.42(stat.)±0.30(syst.)%, in agreement Model....
We study the energy level structure and quantum dynamics for a cavity optomechanical system assisted by single atom. It is found that triple coupling involving photon, phonon an atom cannot be described only quasi-orbital angular momentum at frequency resonance, there also exists phenomenon of parameter namely, when parameters are matched in some way, evolution end mirror conditioned dressed states photon–atom subsystem. The decoherence due to this conditional studied detail. In...
Nonlinear optical cavities are crucial both in classical and quantum optics; particular, nowadays parametric oscillators one of the most versatile tunable sources coherent light, as well highest quality quantum-correlated light continuous variable regime. Being nonlinear systems, they can be driven through critical points which a solution ceases to exist favour new one, it is close these where correlations strongest. The simplest description such systems consists writing fields part plus...
A Higgs particle produced in association with a Z boson and decaying into two photons is searched for the data collected by L3 experiment at LEP. All possible decay modes of are investigated. No signal observed 447.5 pb^-1 recorded centre-of-mass energies up to 209 GeV. Limits on branching fraction as function mass derived. lower limit fermiophobic set 105.4 GeV 95% confidence level.
We study a hybrid nano-mechanical system coupled to spin ensemble as quantum simulator favor interference effect, the electromagnetically induced transparency (EIT). This consists of two resonators (NAMRs), each which nuclear ensemble. It could be regarded crucial element in network NAMR arrays ensembles. Here, ensembles behave long-lived transducer store and transfer NAMRs' information. shows analog EIT effect under driving probe microwave field. The double-EIT phenomenon emerges large $N$...
In atomic vapor cells, atoms collide with the inner surface, causing their spin to randomize on walls. This wall-depolarizing effect can be diffusive and it becomes more pronounced in smaller cells under high temperatures. this work we investigate polarization of optically pumped alkali-metal a millimeter-sized cell heated $150{\phantom{\rule{0.16em}{0ex}}}^{\ensuremath{\circ}}\text{C}$. We consider two extreme boundary conditions, fully depolarizing nondepolarizing boundaries, provide an...
We propose a quantum beam splitter (QBS) with tunable reflection and transmission coefficients. More importantly, our device based on Hermitian parity-time $(\mathcal{PT})$ symmetric system enables the generation manipulation of asymmetric coherence output photons. For interference two weak coherent-state inputs, QBS can produce antibunched photons from one port bunched other, showcasing high parity asymmetry strong control capabilities. Beyond Hong-Ou-Mandel effect, perfect photon blockade...