Welcome to Prof. Li’s Rydberg atom research group
Our research interests focus on quantum physics with Rydberg atoms. Highly excited Rydberg atoms have exaggerated properties such as long lifetimes, large polarizabilities, giant dipole moments, and most importantly, strong, long-range and controllable interactions. We employ these unique features to advance the quantum control of atoms and photons to a new level for the study of quantum optics, many-body physics, quantum information and precision metrology. Long-term goals include exploring novel quantum states of matter, creating macroscopic quantum entanglement, and testing fundamental physics.
News
2025.1
Xiang Desheng was awarded the first prize for oral presentation at the NGL Academic Annual Workshop. Congratulations to him!
2024.11
Our paper "Continuously tunable single-photon level nonlinearity with Rydberg state wave-function engineering" has been published in Reports on Progress in Physics. In this work, we demonstrate precise control of Rydberg interactions over two orders of magnitude through the use of microwave-assisted wave-function engineering. Building on this technique, we further showcase the capability for continuously tunable single-photon level nonlinearity. Our protocol significantly enhances the speed of quantum state operations in low-lying Rydberg states, potentially improving circuit depth and connectivity in Rydberg systems.
2024.10
Our recent work "Observation of quantum information collapse-and-revival in a strongly-interacting Rydberg atom array" is now available on arXiv. In this study, we report the first measurements of out-of-time-ordered correlators and Holevo information in a Rydberg atom array. These measurements allow us to accurately track quantum information scrambling and transport dynamics. Using these tools, we observe a novel spatio-temporal collapse-and-revival behavior of quantum information, which shows distinct characteristics from both typical chaotic and many-body localized systems. This research contributes to our understanding of quantum information dynamics in strongly-interacting systems!
2024.09
We welcome new PhD student Yunhe Wang, new master students Xiyu Xiong and Huifeng Xie to our group!!
2024.08
Ye Gensheng was awarded the oral presentation prize at the 21th Quantum Optics Conference in China. Congratulations to him!
2024.8
Together with our collaborators，we have published a review article on Rydberg superatoms in Applied Physics Reviews. This paper provides a comprehensive overview of the rapidly evolving field of Rydberg superatom and its impact on quantum photonics and quantum information processing. Our review aims to summarize recent developments and potential applications in this exciting area of research!
2024.4
We were nominated for the '2023 Top 10 Achievements in Chinese Optics' award (in the Basic Research category)!
2023.12
Yaowen Zhang wins the poster prize at the 6th International Workshop on Rydberg Atoms and Molecules. Congratulations!
2023.11
Prof. Li wins the PhotoniX Prize (the Frontier Exploratino Award) at International Conference on Quantum Photonics 2023. Congratulations !
2023.11
Biao Xu wins the national schorlaship for P.h.D. student. Congratulations!
2023.10
Our 1st ProArt GeForce RTX™ 4080 16GB OC Edition !
2023.09
Our 1st PhD student Yafen Cai successfully defended her thesis: Study of Rydberg atom-based microwave electrometry and its applications. Congratulations Dr. Cai!
2023.08
Group BBQ near the East Lake shore.
2023.07
We welcome new PhD students Zerui Song and Peng zhou, new master students Huan Zhang and Jinglv Yang to our group!
2023.06
Yitong Li defended his master thesis successfully. Congratulations!
2023.04
Our recent work on photonic entanglement filter using Rydberg atoms is Published in Nature Photonics. In this work, we realize a deterministic entanglement filter based on interacting Rydberg atoms. Photonic entanglement with near-unity fidelity ( > 99%) can be extracted from an input state with an arbitrarily low initial fidelity ( < 7%). Our Protocol is very robust, it also succeeds in the dissipative regime by exploiting the interaction-induced two-body decoherence.
2023.02
Our recent works on free-space atomic candle and MW communicaiton using Rydberg atoms are published in Physical Review Applied and Frontiers of Physics.
2022.11
Ye GenSheng wins the national schorlaship for P.h.D. student. Congratulations!
2022.09
We welcome new PhD students Fengyuan Kuang and Haoxiang Liu to our group!
2022.08
Our recent work "High-fidelity photonic quantum logic gate based on near-optimal Rydberg single-photon source" has been published in Nature Communications.
In this work, we demonstrate a near-optimal Rydberg single-photon source, with ultra-high purity (g2(0)=0.00045(6)) and Indistinguishability (99.94(8)%). Using this highly pure single-photon source, we achieve a near-perfect quantum interference between photons and realize a quantum logic gate with truth-table fidelity of 99.84(3)% and entangling gate fidelity of 99.69(4)%, the highest to date!
2022.08
Xu Biao wins a poster prize at the 20th Quantum Optics Conference in China. Congratulations!
2022.06
Jingzhi Wang defended his master thesis successfully. Congratulations!
2022.02
Rydberg electrometry experiment in a new Microwave darkroom.
2021.12
Quantum LEGO: Programable and defect-free atomic array !
2021.10
2-D atomic array for quantum computing and quantum simulation!
2021.09
We welcome new PhD students Yaowen Zhang and Chenhao Du to our group!
2021.08
31x31 array for Rydberg tweezer experiment.
2021.06
We have recently achieved high quality Rydberg single photons!
2021.03
Xuelin Jin and Lu liu defended their master thesis successfully. Congratulations!
2021.05
Yaowen zhang is awarded with the HUST best thesis prize. Congratulations!
2021.03
Rydberg signal in cold atoms observed! (Rydberg EIT and Raman spectrum)
2021.01
Rydberg quantum optics experiment ready!
2020.11
Cold atoms preapred in a Shuriken-style dipole trap.
2020.10
ULE cavity for laser frequencies stabilization.
2020.09
We welcome new PhD students Desheng Xiang, Gensheng Ye and Jianhao Yu to our group!
2020.08
Rydberg EIT and MW electrometry in vapor cell.
2020.07
Rydberg electrometry setup.
2020.6
Due to Covid-19, no one was in the lab for half a year and unfortunately a leak occurred in our vacuum chamber during this time. Leak check and re-backing!
2020.1
Atoms loaded into the dipole trap.
2019.12
Our first MOT!
2019.11
Atomic fluorescence in the Rydberg quantum optics experiment.
2019.09
We welcome new PhD students Yitong Li , Biao Xu and Jingzhi Wang to our group!
2019.09
Vacuum assembling and backing.
2019.08
After a year of waiting, our lab space is finally ready!
Address :
School of Physics
Huazhong University of Science and Technology
Luoyu Road 1037, Wuhan, Hubei, China