Article
Physics, Multidisciplinary
Emma Deist, Yue-Hui Lu, Jacquelyn Ho, Mary Kate Pasha, Johannes Zeiher, Zhenjie Yan, Dan M. Stamper-Kurn
Summary: Subsystem readout is crucial for error correction in quantum computation. In this study, a strongly coupled optical cavity is used to read out the state of a single atom with high fidelity and nondestructively.
PHYSICAL REVIEW LETTERS
(2022)
Article
Quantum Science & Technology
Andreas Kruckenhauser, Rick van Bijnen, Torsten Zache, Marco Di Liberto, Peter Zoller
Summary: In this study, a toolbox for manipulating arrays of high-dimensional hydrogen-like Rydberg atoms is developed. The researchers utilize the SO(4) symmetry to characterize the effects of various fields on the well-structured manifolds of these states. They also construct generalized large-spin Heisenberg models and demonstrate their applications in quantum simulation and quantum information processing.
QUANTUM SCIENCE AND TECHNOLOGY
(2023)
Article
Physics, Multidisciplinary
Jin-Lei Wu, Yan Wang, Jin-Xuan Han, Shi-Lei Su, Yan Xia, Yongyuan Jiang, Jie Song
Summary: A dynamics regime of Rydberg atoms called unselective ground-state blockade (UGSB) is proposed to implement a one-step SWAP gate without individual addressing of atoms in the context of Rydberg antiblockade (RAB). This work modifies the RAB condition to achieve a dynamical and robust SWAP gate, and further investigates the implementation of a three-atom Fredkin gate based on the proposed SWAP gates.
FRONTIERS OF PHYSICS
(2022)
Review
Quantum Science & Technology
Xiao-Feng Shi
Summary: This article discusses the significance of quantum gates and entanglement based on dipole-dipole interactions of neutral Rydberg atoms in both fundamental physics and quantum information science. It highlights the precision and robustness of Rydberg-mediated entanglement protocols, which are key factors limiting their applicability in experiments and near-future industry. The article reviews various methods for generating entangling gates by exploring the Rydberg interactions of neutral atoms, and emphasizes the achievable fidelity and robustness to technical issues and detrimental innate factors.
QUANTUM SCIENCE AND TECHNOLOGY
(2022)
Article
Optics
Jiahua Li, Ying Wu
Summary: In this study, the optical-mode-conversion characteristics in a bimodal cavity coupled to a pair of two-level atoms were explored using realistic experimental parameters. It was found that optical hyperconversion phenomenon from one polarized mode to another can be achieved in the weak-coupling multiatom cavity system, and the parameter ranges for generating optical-mode subconversion, superconversion, and hyperconversion were identified.
Article
Physics, Multidisciplinary
Yanxin Liu, Zhihui Wang, Pengfei Yang, Qinxia Wang, Qing Fan, Shijun Guan, Gang Li, Pengfei Zhang, Tiancai Zhang
Summary: We demonstrate strong coupling between a one-dimensional single-atom array and a high-finesse miniature cavity experimentally. By loading single atoms into a one-dimensional optical tweezer array, a deterministic number of atoms is obtained and the atom number is determined through real-time imaging. By precisely controlling the position and spacing of the atom array, all atoms in the array are strongly coupled to the cavity simultaneously. The vacuum Rabi splitting spectra are observed for deterministic atom numbers from 1 to 8, validating the dependence of the collective ffiffiffiN enhancement of coupling strength on atom number N at the single-atom level.
PHYSICAL REVIEW LETTERS
(2023)
Article
Quantum Science & Technology
Ettore Canonici, Stefano Martina, Riccardo Mengoni, Daniele Ottaviani, Filippo Caruso
Summary: Neutral atoms devices utilize optical tweezers to arrange atoms and modulated laser pulses to control quantum states, representing a promising technology. Two machine learning-based approaches are proposed to estimate noise parameters and mitigate noise effects on the devices. Our methods are evaluated on both simulated and real data, and the latter approach does not require ancilla qubits.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Optics
Mitsuyoshi Kamba, Ryoga Shimizu, Kiyotaka Aikawa
Summary: In this study, we propose and demonstrate a purely optical feedback cooling method for neutral nanoparticles, achieving an occupation number of 0.85 +/- 0.20. The cooling force is derived from the optical gradients of displaced optical lattices produced with two sidebands on the trapping laser. We reduce the laser intensity noise and establish a method for neutralizing nanoparticles, providing a foundation for investigating the quantum mechanical properties of ultracold nanoparticles and precision measurements.
Article
Optics
J-F Wei, F-Q Guo, D-Y Wang, Y. Jia, L-L Yan, M. Feng, S-L Su
Summary: This article introduces a fast-operation scheme for geometric multiqubit fan-out gates, using asymmetric Rydberg-Rydberg interaction and time-optimal control technology. The scheme features nonadiabaticity and generality, providing scalability and fault tolerance in Rydberg-based quantum computing.
Article
Optics
Yu-Hong Liu, Xian-Li Yin, Jin-Feng Huang, Jie-Qiao Liao
Summary: This study proposes a transient-state scheme to accelerate the ground-state cooling of a mechanical resonator. By using shortcuts to adiabaticity (STA), the cooling process can be achieved in a much shorter period. This work is significant for optomechanical manipulations.
Article
Computer Science, Artificial Intelligence
Chang Peng, Li ZeYu
Summary: The wastewater treatment process is a complex biochemical reaction process with strong nonlinear, non-Gaussian, and time correlation characteristics. An Over-Complete Deep Recurrent Neural Network (ODRNN) method is proposed to address these issues by efficiently extracting non-Gaussian information and temporal correlation features. Simulation results demonstrate that the ODRNN based soft sensor method outperforms other state-of-the-art methods in terms of accuracy and robustness.
APPLIED SOFT COMPUTING
(2021)
Article
Chemistry, Physical
Tarek Trabelsi, Joseph S. Francisco
Summary: Ab initio calculations were performed to investigate the electronic structure and spectroscopy of several compounds. Spectroscopic constants were generated to facilitate their detection. The compounds were found to strongly absorb in the visible region and their electronic structures and related parameters were computed. It was shown that the compounds are suitable for laser-induced fluorescence detection, and a plausible photodissociation mechanism was proposed.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Optics
Wenxi Lai, Jinyan Niu, Yu-Quan Ma, Wu-Ming Liu
Summary: This study theoretically investigates the photovoltaic effect of neutral atoms using inhomogeneous light in a double-trap opened system. By using asymmetric external driving field, the polarization of atom population is created, resulting in a net current of atoms serving as collected carriers in the cell. The research findings are important for understanding and applying the photovoltaic effect.
OPTICS COMMUNICATIONS
(2022)
Article
Optics
Apichayaporn Ratkata, Philip D. Gregory, Andrew D. Innes, Jonas A. Matthies, Lewis A. McArd, Jonathan M. Mortlock, M. S. Safronova, Sarah L. Bromley, Simon L. Cornish
Summary: The study involves measuring the tune-out wavelength for Cs-133, finding the wavelength where scalar polarizability is zero, determining a relevant ratio with increased precision, and using the measurement as a benchmark for high-precision theory.
Article
Engineering, Electrical & Electronic
Shadi Omranpour, Seyed Amir Hashemi
Summary: For the first time, the fan-in and fan-out of quantum phase slip junction (QPSJ)-based two-input AND and OR gates are increased. The proposed method has fewer elements and better performance compared to existing methods.
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS
(2022)
Article
Optics
Dong-Xiao Li, Xiao-Qiang Shao, Jin-Hui Wu, X. X. Yi, Tai-Yu Zheng
Article
Multidisciplinary Sciences
D. X. Li, X. Q. Shao
SCIENTIFIC REPORTS
(2019)
Article
Optics
Wei-Lin Mu, Xiao-Xuan Li, Xiao-Qiang Shao
Summary: We propose a cooling scheme to prepare stationary entanglement of neutral atoms in the Rydberg blockade regime by the combination of periodically collective laser pumping and dissipation. This protocol aims to stabilize the system into the desired steady state independently of the initial state, without requiring coherent addressing of individual neutral atoms or fine control of Rydberg interaction intensity, thus improving the feasibility of experiments in related fields.
Article
Physics, Applied
X. X. Li, X. Q. Shao, Weibin Li
Summary: This study proposes an adiabatic protocol for implementing a controlled-phase gate CZ0 with continuous 0 in neutral atoms. The protocol can achieve a high fidelity over 99.7% in less than 1 μs, even in the presence of spontaneous emission and various experimental imperfections.
PHYSICAL REVIEW APPLIED
(2022)
Article
Physics, Applied
X. Q. Shao, F. Liu, X. W. Xue, W. L. Mu, Weibin Li
Summary: In this paper, a dissipative protocol is presented for deterministic interconversion between Greenberger-Horne-Zeilinger and W states of three neutral 87Rb atoms arranged in an equilateral triangle of a two-dimensional array. The interconversion between tripartite entangled states can be efficiently accomplished in the Floquet-Lindblad framework through the periodic optical pump and dissipation engineering. The high-fidelity and robust tripartite entanglement interconversion protocol provides a route to save physical resources and enhance the computational efficiency of quantum networks formed by neutral-atom arrays.
PHYSICAL REVIEW APPLIED
(2023)
Article
Physics, Fluids & Plasmas
Y. Yao, X. Q. Shao
Summary: The study focuses on the impact of quantum feedback control on charging process of spin-chain quantum battery, finding optimal charging parameters and considering the effects of different factors on the charging process.
Article
Optics
X. X. Li, J. B. You, X. Q. Shao, Weibin Li
Summary: This study combines the Rydberg pumping mechanism and the diagonal form of van der Waals interactions to construct a theoretical model for long-range coherent transport inside the ground-state manifold of neutral atoms systems. The model can simulate various single-body physics phenomena and effectively avoid the influence of atomic spontaneous emission.
Article
Physics, Fluids & Plasmas
Y. Yao, X. Q. Shao
Summary: The study found that adjusting the coupling strength can significantly enhance the energy stored in the battery under quantum jump-based feedback control. A model with cascade-type atoms was proposed to make the battery close to perfect excitation. The research results show that despite various adverse factors, quantum batteries can still maintain a satisfactory energy storage effect.
Article
Optics
Xiao-Qiang Shao
Article
Optics
Hong-Da Yin, Xiao-Xuan Li, Gang-Cheng Wang, Xiao-Qiang Shao
Article
Optics
X. X. Li, H. D. Yin, D. X. Li, X. Q. Shao
Article
Optics
D. X. Li, X. Q. Shao
Article
Optics
D. X. Li, X. Q. Shao
Article
Optics
Xiao-Qiang Shao
