physics papers | Gist.Science

Stabilizing Quantum Effects in Open Systems Through Dynamic Coupling Modulation

This paper establishes dynamic coupling modulation as a new paradigm for quantum state engineering by demonstrating that a single time-dependent control waveform can transform a linear quantum frequency converter into an active interface capable of generating entanglement, suppressing decoherence, and inducing nonlinear phenomena like photon antibunching and two-photon blockade without intrinsic nonlinearity.

Amir Rahmani, Alireza Dehghani, Parisa Rezaei, K Jamshidi-Ghaleh2026-09-10

🔬 physics

Topological Mode Switching via Exceptional-Point Encircling in Baroclinic Instability

This paper demonstrates that the two-layer Phillips model of baroclinic instability possesses an exceptional point at the short-wave stability cutoff, where encircling this spectral singularity in parameter space induces a topological mode-switching phenomenon that allows boundary-layer friction to abruptly alter the dominant unstable weather mode.

Jianfeng Wu2026-09-09

🔬 physics

Shaping causality: programmable nonlocal signal generation in long-range spin systems

This paper demonstrates that nonlocality in long-range spin systems can be deterministically controlled by mapping spin dynamics to hard-core bosons, enabling the precise shaping of causal landscapes where local perturbations trigger signals only at pre-selected excitation sites, thereby bypassing bulk transport limits for programmable information distribution.

Shreyas Sadugol, Giuseppe Celardo, Fausto Borgonovi, Lev Kaplan2026-09-09

🔬 physics

Reconstructing non-Abelian braiding and fusion without anyon transport

This paper presents and experimentally demonstrates a measurement-only protocol on Quantinuum's H2 trapped-ion processor that successfully reconstructs the non-Abelian braiding and fusion primitives of the $D(S_3)$ quantum double model with high fidelity, eliminating the need for physical anyon transport.

Jiannis Pachos, Lucy Byles, Matthew Horner, Benjamin Varcoe2026-09-09

🔬 physics

Higher-dimensional quantum eraser cryptography beyond the binary encoding

This paper demonstrates that extending quantum eraser-based cryptography from binary to higher-dimensional encoding significantly enhances security by physically reducing information leakage through interference-based indistinguishability, thereby lowering an eavesdropper's attack success probability from approximately 85% to 54% while slightly increasing the sifted-key rate.

Ahmed Halawani, Yahya Meshalwi Khabrani, Abdulaziz Al-Mogeeth, Zheng-Hong Li, Al-Amri Mohammad2026-09-09

🔬 physics

Auditing Representation Identifiability in Neural Electron-Density Learning

This paper demonstrates that grid-based machine learning models for predicting electron densities in substitutional alloys fail due to non-identifiability when site-local chemical identity is omitted, and shows that incorporating species-resolved fields is essential to recover accurate density predictions.

Irina Arevalo2026-09-09

🔬 physics

Exchange-only qubit stabilized by a single-spin qubit

This paper proposes a hybrid quantum computing architecture that integrates Loss–DiVincenzo and exchange-only qubits to enable error detection at the encoding level, effectively converting charge and nuclear noise into erasures and facilitating fault-tolerant gate constructions for semiconductor-based quantum computing.

Irina Heinz, Mira Sharma, Joris Kattemölle2026-09-09

🔬 physics

Spectral Alignment of Mesogens for Three-Dimensional Disclination Localization in Liquid Crystals

This paper introduces a deterministic framework combining Spectral Alignment of Mesogens (SPAM) and Discrete Layer Analysis (DLA) to robustly extract three-dimensional disclination centerlines from unoriented mesogen-scale director fields, overcoming the limitations of traditional thresholding methods in identifying topological defects across various liquid-crystalline media.

Saptarshi Saha, Amit Acharya, Gerald J. Wang2026-09-09

🔬 physics

Metal-Insulator Transition Classification Using Hybrid Quantum Learning Under Data Scarcity

This study demonstrates that while hybrid quantum classifiers can serve as competitive compact readouts for classifying scarce metal–insulator transition materials, they do not currently offer a distinct performance advantage over well-controlled classical models when rigorous validation, calibration, and architecture selection are applied.

Gourab Datta, Sara Aminpour, Sarah Sharif, Yaser Banad2026-09-09

🔬 physics

Effect of Pr³⁺ doping on the energy storage and electrocaloric performances of [(Bi 0.5 Na 0.5 ) 0.94 Ba 0.06 ] 0.975 Sr 0.025 TiO 3 antiferroelectric ceramic

This study demonstrates that doping the antiferroelectric ceramic [(Bi₀.₅Na₀.₅)₀.₉₄Ba₀.₀₆]₀.₉₇₅Sr₀.₀₂₅TiO₃ with 1% Pr³⁺ significantly enhances its energy storage density and electrocaloric cooling performance near room temperature without altering its structural phase boundary, positioning it as a promising lead-free candidate for multifunctional electronic applications.

N. Zorgui, Z. Abdelkafi, N. Abdelmoula, H. Khemakhem2026-09-09

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