Chinese Journal of Physics最新文献

{"title":"Scalable and perfect noise-robust communication with no multipartite quantum entanglement","authors":"Jia Hao ,&nbsp;Yu-Guang Yang ,&nbsp;Guang-Bao Xu ,&nbsp;Dong-Huan Jiang ,&nbsp;Yi-Hua Zhou ,&nbsp;Wei-Min Shi","doi":"10.1016/j.cjph.2025.08.041","DOIUrl":"10.1016/j.cjph.2025.08.041","url":null,"abstract":"<div><div>Recently, Chakraborty et al. considered a distributed computing scenario in which multiple senders and a single computing server compute a specific global function of their input strings [Phys. Rev. A 111(3), 032617 (2025)]. They demonstrated that when the senders and the server share a multipartite Greenberger–Horne–Zeilinger (GHZ) state, the classical communication overhead can be reduced by <span><math><mrow><mi>n</mi><mo>−</mo><mn>1</mn></mrow></math></span> bits for <span><math><mi>n</mi></math></span> senders in contrast to the scenario without entanglement. However, the depth requirements of unitary circuits for GHZ state preparation, as well as the unreliable long-distance distribution of GHZ states, limit the practical applications of these distributed computing tasks under current conditions. Here, we propose a feasible distributed computing protocol that does not require multipartite entangled states. We analyze the performance of our protocol under certain types of noise. We demonstrate that our protocol has a unique advantage: it exhibits perfect robustness under these types of noise. In addition, in contrast to the GHZ-state-based protocol, which requires one bit of classical communication from each sender, our protocol eliminates the need for classical communication. Moreover, this advantage can scale arbitrarily as the number of senders increases. Our proposal provides an important pathway for practical communication complexity tasks.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 1415-1422"},"PeriodicalIF":4.6,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145010324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Decoherence dynamics of a general quadratic state in a thermal environment","authors":"Zhi-Long Wan ,&nbsp;Hong-Chun Yuan ,&nbsp;Xiao-Lei Yin ,&nbsp;Chang-Ying Wang ,&nbsp;Yi-Xing Wang","doi":"10.1016/j.cjph.2025.08.034","DOIUrl":"10.1016/j.cjph.2025.08.034","url":null,"abstract":"<div><div>Building on our recently completed work [Chinese J. Phys. 94 (2025) 215], we extend the analysis to a general quadratic state and focus on its analytical evolution in a thermal environment, where it retains the same form as the input state throughout. We also investigate the mean photon number, photon counting distribution, and Wigner distribution function in the thermal environment. In addition, using the differential representation of the von Neumann entropy, we analytically and numerically study the entropy evolution of the quadratic state for thermal noise.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"98 ","pages":"Pages 14-23"},"PeriodicalIF":4.6,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microscopic mechanism of low lattice thermal conductivity induced by strong anharmonic vibrations in thermoelectric zintl compounds KXAs (X = Sn, Ge)","authors":"Jiawei Cui ,&nbsp;Yinchang Zhao ,&nbsp;Jun Ni ,&nbsp;Zhenhong Dai","doi":"10.1016/j.cjph.2025.08.037","DOIUrl":"10.1016/j.cjph.2025.08.037","url":null,"abstract":"<div><div>The thermoelectric properties of Zintl compounds K<span><math><mi>X</mi></math></span>As (<span><math><mi>X</mi></math></span> = Sn, Ge) were systematically investigated using first-principles calculations in combination with density functional theory (DFT), self-consistent phonon (SCP) theory, and the Boltzmann transport equation (BTE). Both three-phonon and four-phonon scattering processes were explicitly considered. The results reveal that the lattice thermal conductivity (<span><math><msub><mi>κ</mi><mi>L</mi></msub></math></span>) remains significantly below 1 W/mK at high temperatures, which is mainly attributed to strong quartic anharmonicity induced by weak bonding between K atoms and their neighboring atoms, together with enhanced Umklapp scattering, effectively suppressing phonon transport. For electronic transport, multiple carrier scattering mechanisms were incorporated to provide a reasonable estimation of the carrier relaxation time. Furthermore, spin-orbit coupling (SOC)-induced Rashba splitting leads to a remarkable reconstruction of the electronic band structure, exerting a pronounced influence on the thermoelectric performance. The significant asymmetry in the band-edge curvature between the conduction and valence bands results in an imbalance of electron and hole contributions, giving rise to an unusual negative Seebeck coefficient under <span><math><mi>p</mi></math></span>-type doping conditions, thereby challenging the conventional bipolar transport theory. Overall, the maximum thermoelectric figure of merit (<span><math><mrow><mi>Z</mi><mi>T</mi></mrow></math></span>) along the <span><math><mi>c</mi></math></span> axis reaches 2.88 for KSnAs and 2.78 for KGeAs at 800 K, demonstrating excellent thermoelectric performance and broad application potential.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"98 ","pages":"Pages 175-190"},"PeriodicalIF":4.6,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predicting Hemodynamic Complexity in Thoracic Aortic Aneurysms with a POD–LSTM Surrogate Model","authors":"Wajdi Rajhi ,&nbsp;Zakarya Ahmed ,&nbsp;Ali B. M․ Ali ,&nbsp;As'ad Alizadeh ,&nbsp;Zahraa Abed Hussein ,&nbsp;Narinderjit Singh Sawaran Singh ,&nbsp;Borhen Louhichi ,&nbsp;Walid Aich","doi":"10.1016/j.cjph.2025.08.040","DOIUrl":"10.1016/j.cjph.2025.08.040","url":null,"abstract":"<div><div>Accurate prediction of blood flow dynamics in Thoracic Aortic Aneurysms (TAA) is essential for rupture risk assessment, yet remains computationally demanding with conventional CFD approaches. This study explores hemodynamic factors associated with TAA rupture using a Predictive Surrogate Model (PSM) integrating Proper Orthogonal Decomposition (POD) and Long Short-Term Memory (LSTM) networks. Transient hemodynamic parameters—including wall shear stress, pressure, and blood flow velocity—were simulated via finite volume-based computational fluid dynamics (CFD) across a cardiac cycle. The PSM framework leverages POD for dimensionality reduction and LSTM for temporal dynamics prediction, enabling efficient reconstruction of hemodynamic fields. A comprehensive evaluation of reconstruction errors across varying POD modes quantified deviations between the Full Order Model (FOM) and Reduced Order Model (ROM), validating the accuracy of the surrogate approach. Comparative analyses between CFD and PSM results demonstrated the machine learning model’s capability to capture complex flow patterns, with additional contrasts highlighting hemodynamic distinctions in normal vessels versus TAA cases. Results revealed elevated velocity fluctuations in the TAA region, increasing flow complexity and reconstruction challenges. This work underscores the potential of hybrid POD-LSTM frameworks for rapid hemodynamic assessment in clinical settings, while emphasizing the need for advanced modeling to address turbulence and biomechanical instabilities in aneurysmal pathologies. Our results indicate that the performed hybrid technique could efficiently (more than 85 %) predict the hemodynamic factors on the saccular surface TAA.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"98 ","pages":"Pages 73-85"},"PeriodicalIF":4.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energy consumption analysis and logical stochastic resonance of Memcapacitor Hodgkin–Huxley neuron based on the Miller effect","authors":"Xin Wang ,&nbsp;Kai Jia ,&nbsp;Mengyan Ge","doi":"10.1016/j.cjph.2025.08.038","DOIUrl":"10.1016/j.cjph.2025.08.038","url":null,"abstract":"<div><div>This study innovatively introduces a memcapacitor based on the Miller effect into the classical Hodgkin–Huxley (HH) neuron system, proposing an improved Memcapacitor Hodgkin–Huxley (MC–HH) neuron model. By replacing the traditional membrane capacitance with a memcapacitive element, this model fully leverages the unique memory characteristics of the memcapacitor, significantly enhancing the model's dynamic behavior and its simulation capability for the history-dependent properties of biological neurons. During the research process, nonlinear dynamic analysis methods such as bifurcation diagrams and phase trajectory plots were employed to investigate the complex dynamic behaviors of the model under the influence of the memcapacitor, as well as the logical stochastic resonance phenomenon driven by Gaussian white noise. The results indicate that the model exhibits bistability and hysteresis phenomena, revealing the \"trigger flux – membrane capacitance – electrical activity – energy metabolism\" mechanism through the synergistic regulation of stimulus current and trigger flux. Furthermore, this model not only inherits the advantage of classical HH neurons in achieving reliable logical operations but also provides a new regulatory dimension for the logical design of neuromorphic computing by leveraging the unique memory characteristics of the memcapacitor, which holds promise for advancing the development of highly integrated neuromorphic chips.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145004310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Complex magnetism with reentrant spin glass behavior and magnetodielectric effect in La2FeMnO6 double perovskite system","authors":"Debasmita Bala ,&nbsp;C.H. Prashanth ,&nbsp;Bheema Lingam Chittari ,&nbsp;Venimadhav Adyam ,&nbsp;H.D. Yang ,&nbsp;Krishnamurthy Jyothinagaram ,&nbsp;D. Chandrasekhar Kakarla","doi":"10.1016/j.cjph.2025.08.024","DOIUrl":"10.1016/j.cjph.2025.08.024","url":null,"abstract":"<div><div>In this study, we investigate the influence of magnetic frustration, arising from competing 3<em>d</em> ion interactions, on the structural, magnetic, and dielectric properties of La₂FeMnO₆ (LFMO) double perovskite system. X-ray diffraction (XRD) and DC magnetization measurements confirm the presence of anti-site disorder (ASD), which contributes to complex magnetic behaviors. Multiple glassy transitions are observed: a non-interacting cluster-glass-like state below ∼280 K, an interacting cluster-glass-like state at <em>T</em>_f1 ≈ 85 K, and a spin-glass state at <em>T</em>_f2 ≈12 K. These transitions are further supported by magnetic memory effects and thermal relaxation analysis. AC susceptibility reveals frequency-dependent dispersion, which is explained using the critical slowing model near <em>T</em>_f1 and <em>T</em>_f2​. Interparticle magnetic interactions are analyzed using isothermal remanent magnetization (IRM) and direct current demagnetization (DCD) techniques. Magnetoresistance (MR) and Maxwell–Wagner (MW) relaxation confirm a significant extrinsic magnetodielectric (MD) effect near <em>T</em> ≈ 240 K. Electronic structure calculations indicate a ferrimagnetic insulating state with a narrow band gap, attributed to the high-spin Fe³⁺ and intermediate-spin Mn³⁺ states. This work demonstrates how ASD and competing magnetic interactions drive multiple spin dynamics and distinct magnetic relaxations in the LFMO system.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 1187-1198"},"PeriodicalIF":4.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One-step preparation of TiO2/PPy composite photoelectrochemical sensors and sensitive detection of TBZ and thiram","authors":"Hanzhaobing Wu ,&nbsp;Jin Xu ,&nbsp;Hongping Zhao ,&nbsp;Baolong Shi ,&nbsp;Yu Wan ,&nbsp;Hao Sun ,&nbsp;Dalei Wang ,&nbsp;Changwei Bi ,&nbsp;Chao Wang ,&nbsp;Wei Liu","doi":"10.1016/j.cjph.2025.08.039","DOIUrl":"10.1016/j.cjph.2025.08.039","url":null,"abstract":"<div><div>Thiabendazole (TBZ) and thiram are widely used fungicides in agricultural production for effective disease control. However, their persistent environmental accumulation and migration lead to excessive residues in soil, groundwater, and other matrices, causing severe contamination and significant human health risks. In this study, TiO₂/PPy (polypyrrole) composites were synthesized via an eco-friendly chemical method to develop a photoelectrochemical (PEC) sensing platform for TBZ and thiram detection. The conductive PPy incorporation significantly enhanced TiO₂'s charge separation efficiency, yielding a notable photocurrent response (∼6 μA/cm²). The fabricated PEC sensor demonstrated reliable detection performance for both fungicides.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 1445-1452"},"PeriodicalIF":4.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CEEMDAN permutation entropy based statistical complexity measure: A new stochastic resonance metric for enhanced detection of feature-unknown weak signals","authors":"Shangbin Jiao ,&nbsp;Yin Zhu ,&nbsp;Qing Zhang ,&nbsp;Yi Wang ,&nbsp;Yuxing Li ,&nbsp;Chenjing Li ,&nbsp;Xiaohui Wang","doi":"10.1016/j.cjph.2025.08.036","DOIUrl":"10.1016/j.cjph.2025.08.036","url":null,"abstract":"<div><div>When studying the adaptive nonlinear stochastic resonance (SR) with noisy periodic signal excitation, the system output resonance effect is typically measured using signal-to-noise ratio (SNR) or SNR gain. However, in practical engineering measurements, the SNR of the noisy input signal is often unknown. To overcome this limitation, this paper proposes a novel metric, “statistical complexity measure based on CEEMDAN permutation entropy (CEEMDAN-PE based SCM)”, to quantify the resonance output effect of the SR system, addressing the challenge of detecting weak signals with unknown features in engineering applications. First, the CEEMDAN is used to preprocess the feature-unknown input signal, and the optimal intrinsic mode function (IMF) is selected. This effectively addresses the modal aliasing problem in EMD that leads to inaccurate experimental results. It also helps filter complex noise components from the signal, aiding effective feature extraction in the subsequent SR processing. Secondly, the improved SCM is selected as the fitness function for the Harris Hawks Optimization (HHO) algorithm, optimizing the best matching parameters of the piecewise linearized bistable SR (PLBSR) system, thus achieving enhanced detection of weak signals with noisy inputs and unknown feature parameters. Simulation experiments show that the proposed CEEMDAN-PE based SCM method can effectively measure the resonance effect of the PLBSR system output and achieve enhanced detection of weak periodic signals. It is also capable of characterizing the system's dynamic complexity and has the potential to detect subtle behaviors induced by noise. Practical experiments demonstrate that the proposed SR measurement method performs well in bearing fault feature extraction.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"98 ","pages":"Pages 59-72"},"PeriodicalIF":4.6,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Statistics of non-monochromatic photons interacting with free electrons","authors":"K.A. Makarova ,&nbsp;D.N. Makarov","doi":"10.1016/j.cjph.2025.08.032","DOIUrl":"10.1016/j.cjph.2025.08.032","url":null,"abstract":"<div><div>It is well known that the interaction of photons with free electrons leads to their quantum entanglement and new statistics. Often, the study of the statistical properties of photons during their interaction with matter is considered for monochromatic photons. In reality, there are no completely monochromatic photons, and this must be taken into account. In this paper, it is shown that the statistical properties of non-monochromatic photons and their quantum entanglement can differ significantly from the case of monochromatic photons. It is shown that the photon statistics can be changed quite easily by varying the parameter responsible for the width of the spectral line of photons. The results obtained can be used in quantum technologies where photon states are needed that are not realized by other methods.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145004311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A systematic computational study on Na-based complex hydrides NaMXH6 (M = Sr, Ba; X = Co, Rh, Ir): A promising class of hydrogen storage materials","authors":"Khidhir Alhameedi ,&nbsp;Asif Hosen ,&nbsp;Heider A. Abdulhussein ,&nbsp;Nadia Ezzat Al-kirbasee ,&nbsp;Ali Akremi ,&nbsp;Imed Boukhris","doi":"10.1016/j.cjph.2025.08.033","DOIUrl":"10.1016/j.cjph.2025.08.033","url":null,"abstract":"<div><div>In this work, density functional theory (DFT) calculations are employed to explore the structural, mechanical, dynamical, optical, thermal, and hydrogen storage properties of NaMXH₆ complex hydrides (M = Sr and Ba; and X = Co, Rh, and Ir). Our findings revealed that all the investigated compounds crystallize in a cubic structure with space group F<span><math><mrow><mover><mn>4</mn><mo>¯</mo></mover><mn>3</mn></mrow></math></span><em>m</em> (No. 216). Phonon dispersion analysis confirms the dynamic stability of the materials, while <em>ab initio</em> molecular-dynamics (AIMD) simulations demonstrate their thermal stability, with no structural deformation. All compounds exhibit indirect band gap semiconductor behavior based on their electronic properties. The band gap decreases when M and/or X cations of NaMXH₆ are substituted. Optical property analysis reveals dual absorption regions in visible and ultraviolet spectra, with absorption coefficients reaching up to 1.4 × 10⁶ cm⁻¹, indicating strong potential for optoelectronic applications and light energy harvesting. To assess mechanical characteristics, the elastic constants were calculated and found to satisfy the mechanical stability criteria, confirming that these hydrides are generally brittle, hard, and stiff. Among them, NaSrCoH₆ shows the highest stiffness and resistance to deformation, while Ba-based hydrides exhibit enhanced ductility. The Quasi-Harmonic Debye model was employed to analyze thermodynamic behavior across a range of temperatures, with results aligning well with fundamental thermodynamic principles. The hydrogen storage capacities wt% of NaSrCoH₆, NaSrRhH₆, NaSrIrH₆, NaBaCoH₆, NaBaRhH₆, and NaBaIrH₆ are 3.44, 2.76, 1.96, 2.68, 2.25, and 1.69, respectively. Overall, these results demonstrate that NaMXH₆ hydrides are multifunctional materials with promising hydrogen storage capacity, mechanical resilience, and semiconducting behavior, making them suitable for clean energy technologies.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 1240-1254"},"PeriodicalIF":4.6,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144921591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}