Tootfinder

Higher-order epitaxy: A pathway to suppressing structural instability and emergent superconductivity
Yuki Sato, Soma Nagahama, Shunsuke Kitou, Hajime Sagayama, Ilya Belopolski, Ryutaro Yoshimi, Minoru Kawamura, Atsushi Tsukazaki, Naoya Kanazawa, Takuya Nomoto, Ryotaro Arita, Taka-hisa Arima, Masashi Kawasaki, Yoshinori Tokura
https://arxiv…

Higher-order epitaxy: A pathway to suppressing structural instability and emergent superconductivity
Molecular beam epitaxy enables the growth of thin film materials with novel properties and functionalities. Typically, the lattice constants of films and substrates are designed to match to minimise disorders and strains. However, significant lattice mismatches can result in higher-order epitaxy, where commensurate growth occurs with a period defined by integer multiples of the lattice constants. Despite its potential, higher-order epitaxy is rarely used to enhance material properties or induce…

Heterogeneously integrated lithium tantalate-on-silicon nitride modulators for high-speed communications
Jiachen Cai, Alexander Kotz, Hugo Larocque, Chengli Wang, Xinru Ji, Junyin Zhang, Daniel Drayss, Xin Ou, Christian Koos, Tobias J. Kippenberg
https://arxiv.org/abs/2508.06265

Heterogeneously integrated lithium tantalate-on-silicon nitride modulators for high-speed communications
Driven by the prospects of higher bandwidths for optical interconnects, integrated modulators involving materials beyond those available in silicon manufacturing increasingly rely on the Pockels effect. For instance, wafer-scale bonding of lithium niobate films onto ultralow loss silicon nitride photonic integrated circuits provides heterogeneous integrated devices with low modulation voltages operating at higher speeds than silicon photonics. However, in spite of its excellent electro-optic mo…

Low Complexity Weight Flexible Decoding Schemes of Linear Block Code for 6G xURLLC
Di Zhang, Yinglei Yang, Zhilong Liu, Shaobo Jia, Kyungchun Lee, Zhirong Zhang
https://arxiv.org/abs/2510.06768

Low Complexity Weight Flexible Decoding Schemes of Linear Block Code for 6G xURLLC
Low complexity error correction code is a key enabler for next generation ultra-reliable low-latency communications (xURLLC) in six generation (6G). Against this background, this paper proposes a decoding scheme for linear block code by leveraging certain interesting properties of dual codewords. It is found that dual codewords with flexible weights can provide useful decoding information for the locations and magnitudes of error bits, which yielding higher reliability performance. In addition,…

Validity Verification of the New TOEFL Writing Task Based on Classical Test Theory
Yinyu Zhang
https://arxiv.org/abs/2509.05347 https://arxiv.org/pdf/2509.…

Validity Verification of the New TOEFL Writing Task Based on Classical Test Theory
The TOEFL iBT has introduced the Academic Discussion Task (ADT) to assess test-takers' ability to engage in academic discourse, reflecting the growing emphasis on interactive communication skills in higher education. However, research on the ADT's validity and fairness particularly for culturally and linguistically diverse groups, such as Chinese students, remains limited. This study addresses this gap by employing Classical Test Theory (CTT) to evaluate the psychometric properties of the ADT a…

A Desktop-Centric Design Space for Direct Object Examination and Visualization in Mixed-Reality Environments
Sam Johnson-Lacoss, Santiago V. Lombeyda, S. George Djorgovski
https://arxiv.org/abs/2508.05088

A Desktop-Centric Design Space for Direct Object Examination and Visualization in Mixed-Reality Environments
Mixed reality (MR) environments are bound to become ubiquitous as MR technology becomes lighter, higher resolution, more affordable, and overall becomes a seamless extension of our current work and living spaces. For research scientists and clinicians focused on understanding 3D phenomena or patient pathologies within the context of the larger human anatomy, that means a necessary evolution of their workstations currently only utilizing 2D interfaces for everyday communication, logistics and da…

Prepare-and-measure and entanglement simulation beyond qubits
Mani Zartab, Giulio Gasbarri, Gael Sent\'is, Ramon Mu\~noz-Tapia
https://arxiv.org/abs/2508.02377 https://

Prepare-and-measure and entanglement simulation beyond qubits
For two non-communicating parties, quantum theory can give rise to probability distributions of outcomes that cannot be reproduced by any local classical model without communication. However, in the case of two-dimensional systems ($d=2$), it is known that allowing a finite amount of classical communication to shared classical resources makes it possible to simulate these quantum correlations. Whether such a simulation remains possible in higher dimensions is still an open question. In this wor…

In-Memory Non-Binary LDPC Decoding
Oscar Ferraz, Vitor Silva, Gabriel Falcao
https://arxiv.org/abs/2508.03567 https://arxiv.org/pdf/2508.03567

In-Memory Non-Binary LDPC Decoding
Low-density parity-check (LDPC) codes are an important feature of several communication and storage applications, offering a flexible and effective method for error correction. These codes are computationally complex and require the exploitation of parallel processing to meet real-time constraints. As advancements in arithmetic and logic unit technology allowed for higher performance of computing systems, memory technology has not kept the same pace of development, creating a data movement bott…

Channel Coding for Unequal Error Protection in Digital Semantic Communication
Seonjung Kim, Yongjeong Oh, Yongjune Kim, Namyoon Lee, Yo-Seb Jeon
https://arxiv.org/abs/2508.03381

Channel Coding for Unequal Error Protection in Digital Semantic Communication
Semantic communication is an emerging paradigm that prioritizes transmitting task-relevant information over accurately delivering raw data bits. In this paper, we address an unequal error protection (UEP) problem in digital semantic communication, where bits of higher semantic importance require stronger protection. To quantify bit-level importance, we leverage bit-flip probabilities of semantic bits as target error protection levels, which are jointly learned with semantic encoder and decoder.…

Full-Angle Ray Antenna Array and Omnicell Wireless Communication System
Xuancheng Zhu, Zhiwen Zhou, Yong Zeng
https://arxiv.org/abs/2509.05677 https://arxi…

Full-Angle Ray Antenna Array and Omnicell Wireless Communication System
Ray antenna array (RAA) was recently proposed as a novel multi-antenna architecture that arranges multiple massive cheap antenna elements into simple uniform linear arrays (sULAs) with different orientations. Compared with traditional architectures like hybrid analog/digital beamforming with uniform linear array (ULA) and uniform circular array (UCA), RAA has several promising advantages such as significantly reduced hardware cost, higher beamforming gains and the ability of providing uniform a…

A Study of Neural Polar Decoders for Communication
Rom Hirsch, Ziv Aharoni, Henry D. Pfister, Haim H. Permuter
https://arxiv.org/abs/2510.03069 https://arx…

A Study of Neural Polar Decoders for Communication
In this paper, we adapt and analyze Neural Polar Decoders (NPDs) for end-to-end communication systems. While prior work demonstrated the effectiveness of NPDs on synthetic channels, this study extends the NPD to real-world communication systems. The NPD was adapted to complete OFDM and single-carrier communication systems. To satisfy practical system requirements, the NPD is extended to support any code length via rate matching, higher-order modulations, and robustness across diverse channel co…