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Highly stable Li^(+) deposition guided by a lithiophilic microchannel

Materials Reports(Energy) 2025年第1期5卷 70-76页

作者： Fuliang Xu Shuling Fan Zhongcheng Sun Yang Peng Qikai Wang Fangmin Ye Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation Department of PhysicsZhejiang Sci-Tech University310018HangzhouChina

The repeated volume variation of lithium(Li)metal anode(LMA)upon Li^(+) plating/stripping,the volatile interface between Li and the electrolyte,and the incessant growth of Li dendrites on Li metal surface have severely hindered the practical application of Li in constructing high energy-density Li metal batteries(LMBs).Herein,a novel Li host(3D ZnO/CNTs/Cu)featuring ordered microchannels and lithiophilic ZnO species on the inner walls of the microchannels is introduced,which induces the uniform Li^(+) deposition into the microchannels and finally suppresses the formation of Li *** stable structure of the fabricated 3D Li host can adapt to volume variations upon Li^(+) plating/stripping,thereby enhancing electrochemical *** cells with the 3D ZnO/CNTs/Cu@Li anode exhibited long cycle stability at areal current densities of 0.5 and 2 mA cm^(-2);Full cells maintained a reversible discharge capacity of 105 mAh g^(-1) after 400 cycles at 1C with a capacity retention of 70%.Meanwhile,ex-situ SEM observations proved that the 3D ZnO/CNTs/Cu@Li anode can keep the structural integrity during charging/discharging(or plating/stripping).This work suggested that lithiophilic nanochannels in the Li host can significantly improve the electrochemical performance and safety of LMBs.

关键词： Lithium metal battery Uniform Li^(+)deposition 3-Dimensional Li host Lithiophilic microchannel

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Floquet geometric squeezing in fast-rotating condensates

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Physical Review A 2025年第1期111卷 L011303-L011303页

作者： Li Chen Fei Zhu Yunbo Zhang Han Pu Institute of Theoretical Physics State Key Laboratory of Quantum Optics and Quantum Optics Devices Shanxi University Taiyuan 030006 China Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation and Department of Physics Zhejiang Sci-Tech University Hangzhou 310018 China Department of Physics and Astronomy and Smalley-Curl Institute Rice University Houston Texas 77005 USA

Constructing and manipulating quantum states in fast-rotating Bose-Einstein condensates (BECs) has long stood as a significant challenge as the rotating speed approached a critical velocity. Although a recent experiment [R. J. Fletcher et al., Science 372, 1318 (2021)] has realized the geometrically squeezed state of the guiding-center mode, the remaining degree of freedom, the cyclotron mode, remains unsqueezed due to the large energy gap of the Landau levels. To overcome this limitation, in this Letter, we propose a Floquet-based state-preparation protocol by periodically driving an anisotropic potential. This protocol not only facilitates single-cyclotron-mode squeezing, but also enables two-mode squeezing. Such two-mode squeezing offers a richer set of dynamics compared to single-mode squeezing and can achieve a wave-packet width well below the lowest-Landau-level limit. Our work provides a highly controllable knob for realizing diverse geometrically squeezed states in ultracold quantum gases within the quantum Hall regime.

关键词： Cyclotrons

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Reentrant localization transition induced by a composite potential

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Physical Review B 2025年第13期111卷 134204-134204页

作者： Xingbo Wei Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation Department of Physics Zhejiang Sci-Tech University Hangzhou 310018 China

We numerically investigate the localization transition in a one-dimensional system subjected to a composite potential consisting of periodic and quasiperiodic components. For the rational wave vector α=1/2, the periodic component reduces to a staggered potential, which has been reported to induce the reentrant localization transition. In addition to α=1/2, we find that other rational wave vectors can also lead to the reentrant phenomenon. To investigate the underlying mechanisms of the reentrant localization transition, we vary the parameters of the composite potential and find that the reentrant localization transition is sensitive to the phase factor of the periodic component. By further studying the structure of the periodic component, we confirm that this sensitivity arises from the periodic phase factor modulating the mirror symmetry. Finally, we map out a global phase diagram and reveal that the reentrant localization transition originates from a paradoxical effect: Increasing the amplitude of the periodic component enhances localization but simultaneously strengthens the mirror symmetry, which favors the formation of extended states. Our numerical analysis suggests that the interplay between these competing factors drives the reentrant localization transition.

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Observing non-Hermiticity induced chirality breaking in a synthetic Hall ladder

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Light(Science & Applications) 2025年第1期14卷 280-290页

作者： Rui Ye Yanyan He Guangzhen Li Luojia Wang Xiaoxiong Wu Xin Qiao Yuanlin Zheng Liang Jin Da-Wei Wang Luqi Yuan Xianfeng Chen State Key Laboratory of Advanced Optical Communication Systems and Networks School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai200240China School of Physics Nankai UniversityTianjin300071China Zhejiang Key Laboratory of Micro-Nano Quantum Chips and Quantum Control School of Physicsand State Key Laboratory for Extreme Photonics and InstrumentationZhejiang UniversityHangzhou310027China Shanghai Research Center for Quantum Sciences Shanghai201315China Collaborative Innovation Center of Light Manipulations and Applications Shandong Normal UniversityJinan250358China

Non-Hermitian topological photonics plays a key role in bridging topological matter with gain and loss engineering in *** we report the experimental observation of the break of chiral currents in a Hall ladder from the non-Hermiticity by constructing synthetic frequency dimension in two rings,where currents on both legs of the ladder co-propagate in the same *** origin of such phenomena is resulted from the interplay between the effective magnetic flux and the on-site gain and *** non-Hermitian co-propagating currents exhibit characteristics of unidirectional frequency conversion in both rings,and moreover,different from the counterpart in Hermitian systems,can provide a method to probe the signatures of the non-Hermitian skin effect from steady-state bulk *** model is further extended to models including next-nearest-neighbor couplings,pointing to a way for observing the non-Hermitian signature with higher winding number,and provides a new control knob for light manipulation with the topological dissipation engineering.

关键词： ladder topological signature

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quantum to classical transport transition and a decoherence detection method in driven optical lattices

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Optics Express 2025年第10期33卷 20483-20495页

作者： Xiangyu Tong Xiaoxiao Ma Xian Zhang Naichen Zhang Kaikai Huang Jianbo Zhang Xuanhui Lu School of Physics Zhejiang University Hangzhou 310018 China Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation Department of Physics Zhejiang Sci-Tech University Hangzhou 310018 China xianzhang@*** xhlu@***

Atomic quantum systems such as atomic clocks or qubits with cold atoms in tweezer arrays have attracted enormous interests both in academia and industry. In this work, we report a theoretical study and experimental demonstration of quantum tunneling of atoms in 1D optical lattices with decoherence. In such decoherence process, the expansion of atomic wave packet is suppressed and resonance spectrum is broadened. In this regime, as the decoherence rate L or the modulation time t increases, the evolution of atomic wave packets transitions from coherent tunneling to classical diffusion. We propose a detection method to fast evaluate the degree of decoherence in such systems. Our work benefits the study of decoherence properties of precision measurements based on optical lattice.

关键词： Frequency measurement Frequency modulation optical clocks optical lattices Precision metrology Q factor

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Ferroelectricity-driven metallicity and magnetic skyrmions in the van der Waals Cr2Ge2Te6/Hf2Ge2Te6 multiferroic heterostructure

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Physical Review B 2025年第14期111卷 144418-144418页

作者： Zheng Chen Hongliang Hu Xiaoping Wu Wenjun Zhang Ping Li Changsheng Song Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation Department of Physics Zhejiang Sci-Tech University Hangzhou 310018 China and Longgang Institute of Zhejiang Sci-Tech University Wenzhou 325802 China

Two-dimensional (2D) multiferroic heterostructures present a promising platform for advanced spin devices by leveraging the coexisting ferromagnetic and ferroelectric orders. Through first-principles calculations and atomistic simulations, we reveal nonvolatile control of metallicity and topological spin textures in the Cr2Ge2Te6/Hf2Ge2Te6 (CGT/HGT) heterostructure. Notably, manipulating ferroelectric polarization in HGT significantly modulates the magnetic anisotropy energy and Dzyaloshinskii-Moriya interaction of CGT/HGT, reversing the easy magnetization axis from in plane to out of plane. By analyzing the atomic-resolved spin-orbit-coupling energy (ΔEsoc), it is found that the cause of the change comes from the Fert-Levy mechanism. Additionally, this polarization control enables the creation and annihilation of bimerons and skyrmions, with interlayer sliding further altering magnetic ordering. Our findings offer valuable insights into magnetoelectric coupling and spin texture manipulation in 2D magnets, highlighting their potential for next-generation spintronic and memory devices.

关键词： Van der Waals forces

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Cat-state-like non-Gaussian entanglement in magnon systems

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Physical Review A 2025年第3期111卷 033717-033717页

作者： Zeyu Zhang Clemens Gneiting Zheng-Yang Zhou Ai-Xi Chen Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation Department of Physics Zhejiang Sci-Tech University Hangzhou 310018 China Theoretical Quantum Physics Laboratory Cluster for Pioneering Research RIKEN Wakoshi Saitama 351-0198 Japan Center for Quantum Computing RIKEN Wakoshi Saitama 351-0198 Japan

Magnons can serve as a bridge between spin, phonon, and photon systems, which renders them suitable for constructing hybrid systems. An important application of such hybrid systems is generating entanglement between different platforms. As magnons can support a broad variety of states, e.g., Fock states, squeezed states, or coherent states, and hybrid states can be produced with cavities or spins, there are many different kinds of entangled states in magnon systems. In this paper, we consider the entanglement of cat-state-like throughout states, which can be generated in magnon systems with parametric pumps beyond the parametric stable intensities. However, estimating the entanglement in such states is challenging due to their multiphoton and non-Gaussian properties. Here, we apply a modular variable-based projection, which maps the catlike states to spin states, preserving the encoded information. After the projection, Bell's inequality is employed to detect the entanglement in the effective spin states. Our numerical analysis provides the conditions for generating catlike entanglement in magnon systems and can be conveniently extended to other entangled states that may be formed by magnon and spin systems.

关键词： Spin dynamics

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Sandwich-structured flexible strain sensors for gesture recognition in human–computer interaction

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The European Physical Journal Special Topics 2025年 1-11页

作者： Chen, Guanzheng Zhang, Xin Sun, Zeng Luo, Xuanzi Fang, Guoqing Wu, Huaping Cheng, Lin Liu, Aiping Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation Department of Physics Zhejiang Sci-Tech University Hangzhou China Key Laboratory of Special Purpose Equipment and Advanced Processing Technology Ministry of Education and Zhejiang Province College of Mechanical Engineering Zhejiang University of Technology Hangzhou China

Flexible strain sensors are crucial for advancing human–computer interaction (HCI) technologies, especially in applications that require precise and adaptive sensing capabilities. In this study, we use polydimethylsiloxane (PDMS) as the substrate material to construct sandwich-structured flexible strain sensors, incorporating a CNT/PDMS conductive polymer (CP) layer between two cross-positioned PDMS-transferred laser-induced graphene (LIG) strips (PL). The sandwich-structured PL/CP/PL sensor exhibits excellent flexibility, structural stability, and component compatibility, effectively enabling the detection of tensile, compressive, and bending strains while overcoming the limitations of single-layer strain sensors and facilitating the measurement of two-dimensional directional forces. Leveraging these capabilities, we apply the sensor to sign language recognition and develop a gesture-based HCI system that utilizes Morse and binary codes to enable intuitive, intelligent communication with the sensors. This advancement holds significant potential to enhance user experience and operational efficiency in virtual reality environments, coded communications systems, and robotics.

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Oxygen vacancies facilitated hole transport in ZrO2 films by Al3+ doping for p-Si heterojunction solar cells

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Applied Physics Letters 2025年第16期126卷

作者： Zhao, Di Ren, Penghui Liu, Dan Li, Songyu Wang, Jianqiao Zhou, Hang Wu, Xiaoping Xu, Lingbo Lin, Ping Yu, Xuegong Wang, Peng Cui, Can Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation Department of Physics Zhejiang Sci-Tech University Hangzhou310018 China State Key Laboratory of Silicon and Advanced Semiconductor Materials School of Material Science and Engineering Zhejiang University Hangzhou310027 China

Transition metal oxides (TMOs) have attracted considerable attention for carrier-selective passivation contacts in crystalline silicon (c-Si) heterojunction solar cells. Among them, zirconium dioxide (ZrO2) exhibits outstanding advantages, such as high permittivity, the presence of fixed negative charges, and high thermal stability. However, it is usually considered incapable of being used as passivation contacts due to its ultra-wide (5.8 eV) bandgap and mismatched energy band structure. In this work, we have demonstrated that ZrO2 films act as hole-selective layers by elaborately regulating oxygen vacancies (VO). ZrO2 films (∼9 nm) prepared by the solution method provide a high surface passivation of p-Si with an effective carrier lifetime of 302 μs. The Al3+ doping not only increases the VO concentrations in the films but also changes the ratio of different categories of VO defects, significantly improving the hole transport properties, with the contact resistivity reduced from 246 to 52 mΩ·cm2. The p-Si/ZrO2:Al3+/Ag structured solar cell reaches a high conversion efficiency of 19.5%. This work shows that ultra-wide bandgap semiconductor materials have great potential as passivation contact layers by modulating the trap defects. © 2025 Author(s).

关键词： Heterojunctions

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One-step synthesis of strongly stabilized yellow fluorescent carbon dots for rapid Golgi apparatus targeting and imaging

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Diamond and Related Materials 2025年 156卷

作者： Li, Hao Zhou, Zihao Ni, Chuyao Xiao, Jianwu Cao, Jun Pan, Jiaqi Li, Chaorong Zheng, Yingying Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation Department of Physics Zhejiang Sci-Tech University Hangzhou310018 China Hangzhou Mingshi Culture Dissemination Co. Ltd Hangzhou China

Targeted monitoring of the Golgi apparatus (GA) morphology and structure as well as the Golgi apparatus stress response is both essential and challenging. Golgi-targeting phenylsulfonamide-rich carbon dots (PR-CDs) with excitation-dependent, lower cytotoxicity and favorable biocompatibility were synthesized by one-step solvothermal process. Phenylsulfonamide unit which had a strong binding affinity for the inducible enzyme (cyclooxygenase-2 (COX-2)) expressed and accumulated on the Golgi apparatus surface was introduced as a Golgi-targeting moiety. PR-CDs had abundant surface functional groups (amino group, phenylsulfonamide and sulfonic acid group) and excellent fluorescence stability in complex environments (PH, amino acid, ionic liquid, polarity and viscosity). Rapid and accurate imaging of the Golgi apparatus in living cells was achieved by PR-CDs within 15 min and yielded an average Pearson's coefficient of 0.92. Additionally, efficient tracking and imaging of the Golgi apparatus during apoptosis cell death were also accomplished. The successful preparation of PR-CDs provides an innovative subcellular targeting strategy and the prepared PR-CDs could serve as excellent carriers for targeted drug delivery in the future. © 2025

关键词： Biocompatibility

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