Explanipedia

Multiple physical quantities sensors based on non-Hermitian topological systems with an impurity Open

NULL AUTHOR_ID, Yubin Zhang, Xiaomin Zhang, X. X. Yi · 2025

Spectra of non-Hermitian systems with skin effects are sensitive to the boundary conditions. In this work, we introduce a system composed of an impurity and a nonreciprocal Su-Schrieffer-Heeger (SSH) chain with odd number of lattice sites.…

NEW FEATURES OF SIMPLE QUANTUM SYSTEMS DUE TO GRAVITY VIA GENERALIZED UNCERTAINTY RELATION Open

Haodi LIU, Yuxuan Li, X. X. Yi · 2025

Emergent Non-Markovian Gain in Open Quantum Systems Open

H. Z. Shen, Cheng Shang, Y. H. Zhou, X. X. Yi · 2025

Non-Markovian dynamics go beyond the Markovian approximation by capturing memory effects and information backflow in open quantum systems, which are crucial for describing realistic physical processes. In this work, we study the exact non-…

Characteristic Analysis of Carbon Fluxin Paddy Fields in Panjin Wetland Open

Xudong Zou, Dawei Zhang, X. X. Yi, Hongli Chen, Ran Li , et al. · 2025

AirExo-2: Scaling up Generalizable Robotic Imitation Learning with Low-Cost Exoskeletons Open

Hongjie Fang, C. S. Wang, Yiming Wang, Jingjing Chen, Shangning Xia , et al. · 2025

Scaling up robotic imitation learning for real-world applications requires efficient and scalable demonstration collection methods. While teleoperation is effective, it depends on costly and inflexible robot platforms. In-the-wild demonstr…

Material and Energy Exchange Dynamics in Paddy Fields Across Growth Stages in Liaohe Delta, Northeast China Open

Jing Miao, X. X. Yi, Linlin Sun, Chao Yuan, Tongyu Yang , et al. · 2025

This study examines the material and energy exchange of rice paddies during different growth stages in the Liaohe Delta, Northeast China, during an unusually warm year (2019). Utilizing eddy covariance data, we focused on four key growth s…

Manipulating spectral transitions and photonic transmission in a non-Hermitian optical system through nanoparticle perturbations Open

Bo-Wang Zhang, Cheng Jia Shang, Jingying Sun, Zhongze Gu, X. X. Yi · 2024

In recent years, extensive research has been dedicated to the study of parity-time ($\mathcal{PT}$) symmetry, which involves the engineered balance of gain and loss in non-Hermitian optics. Complementary to $\mathcal{PT}$ symmetry, the con…

A pragmatic function study of the discourse marker "I mean" in Friends Open

X. X. Yi · 2024

This paper examines the discourse marker "I mean" in the first season of Friends, exploring its pragmatic functions within dialogues. Analysis reveals that "I mean" facilitates politeness, moderates tone, and enhances identification, while…

Study on Cubic Stiffness Nonlinear Energy Sink Controlling Dynamic Responses of Multi-Degree-of-Freedom Structure by Shake Table Tests Open

Qinhua Wang, X. X. Yi, Dongxu Yang, Yi Tang · 2024

A nonlinear energy sink (NES) has such advantages as controlling broader band responses and better robustness than conventional control devices like tuned mass dampers (TMDs). In this research, a cubic stiffness NES mitigating the dynamic …

Dynamics of an Initial Correlated Spin-Boson Model from Slow to Fast Bath: A Perturbation Treatment Open

M. Qin, H. T. Cui, Chunyang Wang, Yuqing Xu, Yun‐An Yan , et al. · 2024

Influence of initial states on memory effects: A study of early-time superradiance Open

S. C. Hou, G. Q. Shuai, X. Y. Zhang, Jin-Ke Shen, X. X. Yi · 2023

The initial state of a quantum system can significantly influence its future dynamics, especially in non-Markovain quantum processes due to the environmental memory effects. Based on a previous work of ours, we propose a method to quantify…

Planar and tunable quantum state transfer in a splicing Y-junction Su–Schrieffer–Heeger chain Open

Li-Na Zheng, Hong‐Fu Wang, X. X. Yi · 2023

We present a feasible scheme to implement a planar and tunable quantum state transfer (QST) via topologically protected zero-energy mode in a splicing Y-junction Su–Schrieffer–Heeger (SSH) chain. The introduction of the elaborate nearest-n…

Parameter estimation with limited access of measurements Open

Jianning Li, Dianzhen Cui, X. X. Yi · 2023

Quantum parameter estimation holds the promise of quantum technologies, in which physical parameters can be measured with much greater precision than what is achieved with classical technologies. However, how to obtain a best precision whe…

Enhanced parameter estimation by measurement of non-Hermitian operators Open

Jianning Li, H. D. Liu, Zhihai Wang, X. X. Yi · 2023

Quantum metrology aims at delivering new quantum-mechanical improvement to technologies of parameter estimations with precision bounded by the quantum Cramér-Rao bound. The currently used quantum Cramér-Rao bound was established with measu…

Supervised learning for robust quantum control in composite-pulse systems Open

Zhi‐Cheng Shi, Jun-Tong Ding, Ye‐Hong Chen, Jie Song, Yan Xia , et al. · 2023

In this work, we develop a supervised learning model for implementing robust quantum control in composite-pulse systems, where the training parameters can be either phases, detunings, or Rabi frequencies. This model exhibits great resistan…

Effective Hamiltonian approach to the quantum phase transitions in the extended Jaynes-Cummings model Open

H. T. Cui, Y. A. Yan, M. Qin, X. X. Yi · 2023

The study of phase transitions in dissipative quantum systems based on the Liouvillian is often hindered by the difficulty of constructing a time-local master equation when the system-environment coupling is strong. To address this issue, …

Robust transitionless quantum driving: Concatenated approach Open

Zhi‐Cheng Shi, Cheng Zhang, Li-Tuo Shen, Jie Song, Yan Xia , et al. · 2023

We propose a concatenated approach for implementing transitionless quantum driving regardless of adiabatic conditions while being robustness with respect to all kinds of systematic errors induced by pulse duration, pulse amplitude, detunin…

Exponentially enhanced gravitationally induced entanglement between quantum systems with a two-phonon drive Open

Dianzhen Cui, X. X. Yi · 2023

Finding a feasible protocol for probing the quantum nature of gravity has been attracting an increasing amount of attention. In this manuscript, we propose a protocol to enhance the detection of gravitationally induced entanglement by expl…

Control of quantum coherence of photons exploiting quantum entanglement Open

Dianzhen Cui, Xi‐Lin Wang, X. X. Yi, Li‐Ping Yang · 2023

Accurately controlling the quantum coherence of photons is pivotal for their applications in quantum sensing and quantum imaging. Here, we propose the utilization of quantum entanglement and local phase manipulation techniques to control t…

Multiple single-photon generations in three-level atoms coupled to a cavity with non-Markovian effects Open

H. Z. Shen, Yun Chen, T. Z. Luan, X. X. Yi · 2023

In this paper, we show how to generate the multiple single-photon wavepackets\nof arbitrary temporal shape from an optical cavity coupled with $N$ three-level\natoms driven by a driving field in the non-Markovian regime. We derive an exact…

Back Cover: Quantum Imaging Exploiting Twisted Photon Pairs (Adv. Quantum Technol. 5/2023) Open

Dianzhen Cui, X. X. Yi, Li‐Ping Yang · 2023

Quantum correlation of two-photon states has been utilized to suppress the environmental noise in imaging down to the single-photon level. However, the size of the coherence area of photon pairs limits the applications of quantum imaging b…

Nonreciprocal photon blockade in a spinning optomechanical system with nonreciprocal coupling Open

Yu‐Mu Liu, Jing Cheng, Hong‐Fu Wang, X. X. Yi · 2023

A scheme is presented to achieve quantum nonreciprocity by manipulating the statistical properties of the photons in a composite device consisting of a double-cavity optomechanical system with a spinning resonator and nonreciprocal couplin…

Quantized fields induced topological features in Harper-Hofstadter model Open

Xue Han, Fude Li, De-Xiu Qiu, Kang Xue, X. X. Yi · 2023

Classical magnetic fields might change the properties of topological insulators such as the time reversal symmetry protected topological edge states. This poses a question that whether quantized fields would change differently the feature …

Driven Markovian master equation based on the Lewis-Riesenfeld-invariant theory Open

S. L. Wu, X. L. Huang, X. X. Yi · 2022

We derive a Markovian master equation for driven open quantum systems based\non the Lewis-Riesenfeld invariants theory, which is available for arbitrary\ndriving protocols.The role of the Lewis-Riesenfeld invariants is to help us\nbypass t…

Cooperative-effect-induced one-way steering in open cavity magnonics Open

Si‐Yu Guan, Hong‐Fu Wang, X. X. Yi · 2022

Localization-enhanced dissipation in a generalized Aubry-André-Harper model coupled with Ohmic baths Open

H. T. Cui, M. Qin, Lingling Tang, H. Z. Shen, X. X. Yi · 2022

Engineering the phase-robust topological router in a chiral-symmetric dimerized superconducting circuit lattice with long-range hopping Open

Li-Na Zheng, Hong‐Fu Wang, X. X. Yi · 2022

We propose a scheme to implement the phase-robust topological router based on a one-dimensional dimerized superconducting circuit lattice with long-range hopping. We show that the proposed dimerized superconducting circuit lattice can be m…

Effect of quantum jumps on non-Hermitian system Open

Xiangyu Niu, Jianning Li, S. L. Wu, X. X. Yi · 2022

One among the possible realizations of non-Hermitian systems is based on open quantum systems by omitting quantum jumping terms in the master equation. This is a good approximation at short times where the effects of quantum jumps can be i…

Dynamical localization in non-Hermitian quasicrystals Open

C. M. Dai, Yunbo Zhang, X. X. Yi · 2022

We study the localization transition in periodically driven one-dimensional\nnon-Hermitian lattices where the piece-wise two-step drive is constituted by\nuniform coherent tunneling and incommensurate onsite gain and loss. We find\nthat th…

Shortcuts to adiabaticity with general two-level non-Hermitian systems Open

T. Z. Luan, H. Z. Shen, X. X. Yi · 2022

Shortcuts to adiabaticity are alternative fast processes which reproduce the\nsame final state as the adiabatic process in a finite or even shorter time,\nwhich have been extended from Hermitian systems to non-Hermitian systems in\nrecent …

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