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Non-Hermitian superconducting diode effect
Junjie Qi, Ming Lu, Jie Liu, Chui-Zhen Chen, X. C. Xie
https://arxiv.org/abs/2508.05101 https://arxiv.org/pdf/25…

Non-Hermitian superconducting diode effect
The study of non-reciprocal phenomena has long captivated interest in both Hermitian and non-Hermitian systems. The superconducting diode effect (SDE) is a non-reciprocal phenomenon characterized by unequal critical charge supercurrents flowing in opposite directions in Hermitian superconducting systems. In this study, we introduce an SDE driven by non-Hermiticity in a superconducting quantum interference device (SQUID) under an external magnetic flux, which we refer to as the non-Hermitian SDE…

Unlock giant nonreciprocity via multi-valued behavior of non-Hermitian zero-index materials
Yang Li, Yueyang Liu, Yucong Yang, Tianyi Zhang, Jianfeng Chen, Tian Dong, Fulong Shi, Phatham Loahavilai, Tianchi Zhang, Di Wu, Zixuan Wei, Dengfu Deng, Jun Qin, Longjiang Deng, Cheng-Wei Qiu, Lei Bi
https://arxiv.org/abs/2509.06121

Unlock giant nonreciprocity via multi-valued behavior of non-Hermitian zero-index materials
Although Einstein's field equations are time-independent, the multivalued feature of the horizon of a blackhole naturally enables the one-way transmission, leading to the strong arrow of time from the time-independent gravitational interaction. Here we experimentally demonstrate a photonic analogue of this principle and reveal the infinite nonreciprocity of the time-reversal-symmetric Maxwell equations. By designing a non-Hermitian zero-index magneto-optical metawaveguide, we introduce multival…

Generalizable Audio Deepfake Detection via Hierarchical Structure Learning and Feature Whitening in Poincar\'e sphere
Mingru Yang, Yanmei Gu, Qianhua He, Yanxiong Li, Peirong Zhang, Yongqiang Chen, Zhiming Wang, Huijia Zhu, Jian Liu, Weiqiang Wang
https://arxiv.org/abs/2508.01897

Generalizable Audio Deepfake Detection via Hierarchical Structure Learning and Feature Whitening in Poincaré sphere
Audio deepfake detection (ADD) faces critical generalization challenges due to diverse real-world spoofing attacks and domain variations. However, existing methods primarily rely on Euclidean distances, failing to adequately capture the intrinsic hierarchical structures associated with attack categories and domain factors. To address these issues, we design a novel framework Poin-HierNet to construct domain-invariant hierarchical representations in the Poincaré sphere. Poin-HierNet includes th…

Non-Hermitian Skin Effect and Electronic Nonlocal Transport
Carlos Pay\'a, Oliver Solow, Elsa Prada, Ram\'on Aguado, Karsten Flensberg
https://arxiv.org/abs/2510.00921 h…

Non-Hermitian Skin Effect and Electronic Nonlocal Transport
Open quantum systems governed by non-Hermitian effective Hamiltonians exhibit unique phenomena, such as the non-Hermitian skin effect, where eigenstates localize at system boundaries. We investigate this effect in a Rashba nanowire coupled to a ferromagnetic lead and demonstrate that it can be detected via non-local transport spectroscopy: while local conductance remains symmetric, the non-local conductance becomes non-reciprocal. We account for this behavior using both conventional transport a…

Cheap Drone Built to Kill Shahed Recorded Flying at Bullet Train Speed - Business Insider
https://www.businessinsider.com/cheap-drone-shahed-sting-wild-hornets-bullet-train-speed-2025-8

On some examples and counterexamples about weighted Lagrange interpolation with Exponential and Hermite weights
Patricia Szokol
https://arxiv.org/abs/2508.18029 https://

On some examples and counterexamples about weighted Lagrange interpolation with Exponential and Hermite weights
The famous Bernstein conjecture about optimal node systems of classical polynomial Lagrange interpolation, standing unresolved for over half a century, was solved by T. Kilgore in 1978. Immediately following him, also the additional conjecture of Erdős was solved by deBoor and Pinkus. These breakthrough achievements were built on a fundamental auxiliary result on nonsingularity of derivative (Jacobian) matrices of certain interval maxima in function of the nodes. After the above breakthrough, …

Exceptional-point-induced dynamic sensitivity to particle-number parity
J. Y. Liu-Sun, Z. Song
https://arxiv.org/abs/2509.18563 https://arxiv.org/pdf/2509.…

Tour 124: #SachsenAnhalt: #Wanderung #Wernigerode - #Kummerholz (ca. 22 km)
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