A5004799246- Cold Atom Physics and Bose-Einstein Condensates
- Quantum Information and Cryptography
- Atomic and Molecular Physics
- Advanced Chemical Physics Studies
- Quantum optics and atomic interactions
- Atomic and Subatomic Physics Research
- Quantum many-body systems
- Quantum Mechanics and Applications
- Magnetic properties of thin films
- Quantum, superfluid, helium dynamics
- Quantum Computing Algorithms and Architecture
- Physics of Superconductivity and Magnetism
- Advanced Frequency and Time Standards
- Inorganic Chemistry and Materials
- Neural Networks and Reservoir Computing
- X-ray Spectroscopy and Fluorescence Analysis
- Quantum and electron transport phenomena
- Spectroscopy and Laser Applications
- Theoretical and Computational Physics
- Electron and X-Ray Spectroscopy Techniques
- Mass Spectrometry Techniques and Applications
- Inorganic Fluorides and Related Compounds
- Peptidase Inhibition and Analysis
- Atmospheric Ozone and Climate
- Crystal Structures and Properties
University of Science and Technology of China
2008-2025
Hefei National Center for Physical Sciences at Nanoscale
2005-2025
Heidelberg University
2007-2023
Hefei University
2023
CAS Key Laboratory of Urban Pollutant Conversion
2017-2023
Beijing Academy of Quantum Information Sciences
2022
Alibaba Group (China)
2017
Gauge theories form the foundation of modern physics, with applications ranging from elementary particle physics and early-universe cosmology to condensed matter systems. We perform quantum simulations unitary dynamics a U(1) symmetric gauge field theory demonstrate emergent irreversible behavior. The highly constrained are encoded in one-dimensional Bose-Hubbard simulator, which couples fermionic fields through dynamical fields. investigated global quenches equilibration steady state well...
The ongoing quest for understanding nonequilibrium dynamics of complex quantum systems underpins the foundation statistical physics as well development technology. Quantum many-body scarring has recently opened a window into novel mechanisms delaying onset thermalization by preparing system in special initial states, such $\mathbb{Z}_2$ state Rydberg atom system. Here we realize Bose-Hubbard simulator from previously unknown conditions unit-filling state. We develop quantum-interference...
Ultracold atoms in optical lattices form a competitive candidate for quantum computation owing to the excellent coherence properties, highly parallel operations over spins, and ultralow entropy achieved qubit arrays. For this, massive number of entangled atom pairs have been realized superlattices. However, more formidable challenge is scale up detect multipartite entanglement, basic resource computation, due lack manipulations local atomic spins retroreflected bichromatic In this Letter, we...
A single photon source is realized with a cold atomic ensemble ($^{87}$Rb atoms). In the experiment, photons, which initially stored in an quantum memory generated by Raman scattering of laser pulse, can be emitted deterministically at time-delay control. It shown that production rate photons enhanced feedback circuit considerably while single-photon quality conserved. Thus our present well suitable for future large-scale realization communication and linear optical computation.
We demonstrate a novel way to efficiently create robust entanglement between an atomic and photonic qubit. A single laser beam is used excite one ensemble two different modes of Raman fields are collected generate the atom-photon entanglement. With help built-in quantum memory, still exists after 20.5 micros storage time which further proved by violation Clauser-Horne-Shimony-Holt type Bell's inequality. The procedure can serve as building block for repeater architecture [Zhao, Phys. Rev....
We experimentally investigate the quantum criticality and Tomonaga-Luttinger liquid (TLL) behavior within one-dimensional (1D) ultracold atomic gases. Based on measured density profiles at different temperatures, universal scaling laws of thermodynamic quantities are observed. The critical regime relevant crossover temperatures determined through double-peak structure specific heat. In TLL regime, we obtain Luttinger parameter by probing sound propagation. Furthermore, a characteristic...
Gauge theory and thermalization are both foundations of physics nowadays topics essential importance for modern quantum science technology. Simulating lattice gauge theories (LGTs) realized recently with ultracold atoms provides a unique opportunity carrying out correlated study in the same setting. Theoretical studies have shown that an Ising phase transition exists this implemented LGT, can also signal transition. Nevertheless, it remains experimental challenge to accurately determine...
We create independent, synchronized single-photon sources with built-in quantum memory based on two remote cold atomic ensembles. The single photons are used to demonstrate efficient generation of entanglement. resulting entangled photon pairs violate a Bell's inequality by 5 standard deviations. Our their long coherence time 25 ns and the creation entanglement serve as an ideal building block for scalable linear optical information processing.
We report the heralded generation of an atomic NOON state by observation phase super resolution in a motion-sensitive spin-wave (SW) interferometer. The SW interferometer is implemented generating superposition two SWs and observing interference between them, where fringe sensitive to collective motion. By second order interferometer, we observe pattern which provides strong evidence resolution. demonstrated can principle be scaled up highly entangled state, thus fundamental importance,...
We propose and implement a lattice scheme for coherently manipulating atomic spins. Using vector light shift superlattice structure, we demonstrate experimentally its capability on addressing spins in double wells square plaquettes with subwavelength resolution. The quantum coherence of spin manipulations is verified through measuring atom tunneling exchange dynamics. Our experiment presents building block engineering many-body states optical lattices realizing simulation computation tasks.
Scalable, coherent many-body systems can enable the realization of previously unexplored quantum phases and have potential to exponentially speed up information processing. Thermal fluctuations are negligible effects govern behavior such with extremely low temperature. We report cooling a simulator 10,000 atoms mass production high-fidelity entangled pairs. In two-dimensional plane, we cool Mott insulator samples by immersing them into removable superfluid reservoirs, achieving an entropy...
A microchannel-plate based resistive-anode position sensitive detection system is applied to a high-resolution fast electron energy loss spectrometer. The biasing voltage divider network for the detector investigated. measurement efficiency increased by about 20 times, and some extent, resolution also improved. static mode scanning of spectrometer are discussed in detail. In mode, spectrum with higher can be obtained through coarse scanning. As testing experiment, optical oscillator strength...
The topological $\theta$-angle is central to the understanding of a plethora phenomena in condensed matter and high-energy physics such as strong CP problem, dynamical quantum phase transitions, confinement--deconfinement transition. Difficulties arise when probing effects using classical methods, particular through appearance sign problem numerical simulations. Quantum simulators offer powerful alternate venue for realizing $\theta$-angle, which has hitherto remained an outstanding...