Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Dimensional Constraints from SU(2) Representation Theory in Graph-Based Quantum Systems
João P. da Cruz·Jan 20, 2026
We investigate dimensional constraints arising from representation theory when abstract graph edges possess internal degrees of freedom but lack geometric properties. We prove that such internal degrees of freedom can only encode directional informat...
Squeezed-Light-Enhanced Multiparameter Quantum Estimation in Cavity Magnonics
Hamza Harraf, Mohamed Amazioug, Rachid Ahl Laamara·Jan 20, 2026
Improving multiparameter quantum estimation in magnonic systems via quantum noise suppression is a well-established and critical research objective. In this work, we propose an experimentally realistic scheme to improve the precision of simultaneousl...
Composing $p$-adic qubits: from representations of SO(3)$_p$ to entanglement and universal quantum logic gates
Ilaria Svampa, Sonia L'Innocente, Stefano Mancini +1 more·Jan 20, 2026
In the context of $p$-adic quantum mechanics, we investigate composite systems of $p$-adic qubits and $p$-adically controlled quantum logic gates. We build on the notion of a single $p$-adic qubit as a two-dimensional irreducible representation of th...
Generative Adversarial Networks for Resource State Generation
Shahbaz Shaik, Sourav Chatterjee, Sayantan Pramanik +1 more·Jan 20, 2026
We introduce a physics-informed Generative Adversarial Network framework that recasts quantum resource-state generation as an inverse-design task. By embedding task-specific utility functions into training, the model learns to generate valid two-qubi...
Spectral stability of cavity-enhanced single-photon emitters in silicon
Johannes Früh, Fabian Salamon, Andreas Gritsch +2 more·Jan 20, 2026
The unrivaled maturity of its nanofabrication makes silicon a promising hardware platform for quantum information processing. To this end, efficient single-photon sources and spin-photon interfaces have been implemented by integrating color centers o...
Fundamental Limits of Continuous Gaussian Quantum Metrology
Kazuki Yokomizo, Aashish A. Clerk, Yuto Ashida·Jan 20, 2026
Continuous quantum metrology holds promise for realizing high-precision sensing by harnessing information progressively carried away by the radiation quanta emitted into the environment. Despite recent progress, a comprehensive understanding of the f...
Symmetric Informationally Complete Positive Operator Valued Measure and Zauner conjecture
Stefan Joka·Jan 20, 2026
In this paper, we show that in Hilbert space of any finite dimension N, there are N^2 unit vectors which constitute Symmetric Informationally Complete Positive Operator Valued Measure (SIC-POVM).
Quantum Encoding Framework for Leptophilic Gauge Theories
S. Kara·Jan 20, 2026
We present a systematic quantum encoding framework for leptophilic extensions of the Standard Model, tailored to quantum simulation applications on near term and future quantum devices. Focusing on anomaly free $U(1)'_{\ell}$ gauge theories, we show ...
Quantum Entanglement, Stratified Spaces, and Topological Matter: Towards an Entanglement-Sensitive Langlands Correspondence
Kazuki Ikeda, Steven Rayan·Jan 19, 2026
Recently, quantum entanglement has been presented as a cohomological obstruction to reconstructing a global quantum state from locally compatible information, where sheafification provides a functor that is forgetful with regards to global-from-local...
High-Resolution Electron Paramagnetic Resonance
Colin J. Stephen, Anton Tcholakov, Maik Icker +7 more·Jan 19, 2026
Electron paramagnetic resonance (EPR) is a valuable tool for physics, chemistry, biology and medicine, providing complementary spectroscopic information to NMR. It has long been known that EPR at high magnetic fields offers greater spectral resolutio...
Implementation of Leaking Quantum Walks on a Photonic Processor
E. Stefanutti, J. Philipps, J. Buetow +4 more·Jan 19, 2026
Quantum walks (QWs) represent pillars of quantum dynamics and information processing. They provide a powerful framework for simulating quantum transport, designing search algorithms, and enabling universal quantum computation. Several physical platfo...
Quantitative wave-particle duality in uniform multipath interferometers with symmetric which-path detector states
L. F. Melo, O. Jiménez, L. Neves·Jan 19, 2026
A quantum system (quanton) traverses an interferometer with $N$ equally probable paths and interacts with another quantum system (detector) that stores path information in a set of symmetric states. In this interferometric framework, we present entro...
Exact dynamics and bound states of a cavity coupled to a two-dimensional reservoir
Heng-Na Xiong, Da-Wei Ye, Yang Yang +4 more·Jan 19, 2026
We demonstrate a robust scheme for quantum information storage based on bound states in a two-dimensional coupled-cavity array. When a target cavity is tuned to resonance with the array, a bound state in the continuum (BIC) emerges, coexisting with t...
Revealing the non-classicality of a molecular nanomagnet
Alessandra Cammarata, Steve Campbell, Mauro Paternostro·Jan 19, 2026
Molecular nanomagnets are compounds characterized by a high-spin magnetic core that is protected by organic ligands. They have recently gained attention as potential quantum information carriers in solid-state quantum computing platforms, simultaneou...
Equation-Free Discovery of Open Quantum Systems via Paraconsistent Neural Networks
Aleyna Ceyran, Jair Minoro Abe·Jan 19, 2026
Modeling the dynamics of open quantum systems on noisy intermediate-scale quantum (NISQ) devices constitutes a major challenge, as high noise levels and environmental degradations lead to the decay of pure quantum states (decoherence) and energy loss...
Coherence Scaling in Quantum Communication Protocols
Pedro H. Alvarez, Marcos C. de Oliveira·Jan 18, 2026
We investigate how quantum coherence scales and is redistributed in quantum communication protocols, using superdense coding and quantum teleportation as paradigmatic case studies. Employing the relative entropy of coherence as a circuit-level resour...
Non-intersecting Squared Bessel Process: Spectral Moments and Dynamical Entanglement Entropy
Youyi Huang, Lu Wei·Jan 18, 2026
Statistical ensembles of reduced density matrices of bipartite quantum systems play a central role in entanglement estimation, but do not capture the non-stationary nature of entanglement relevant to realistic quantum information processing. To addre...
A Mixture of Experts Vision Transformer for High-Fidelity Surface Code Decoding
Hoang Viet Nguyen, Manh Hung Nguyen, Hoang Ta +2 more·Jan 18, 2026
Quantum error correction is a key ingredient for large scale quantum computation, protecting logical information from physical noise by encoding it into many physical qubits. Topological stabilizer codes are particularly appealing due to their geomet...
Stochastic Quantum Information Geometry and Speed Limits at the Trajectory Level
Pedro B. Melo, Pedro V. Paraguassú, Sílvio M. Duarte Queirós +3 more·Jan 18, 2026
Standard quantum metrology relies on ensemble-averaged quantities, such as the Quantum Fisher Information (QFI), which often mask the fluctuations inherent to single-shot realizations. In this work, we bridge the gap between quantum information geome...
Hierarchy of quantum correlations in qubit-qutrit axially symmetric states
Venkat Abhignan, R. Muthuganesan·Jan 18, 2026
We investigate quantum correlations in a hybrid qubit-qutrit system subject to both axial and planar single-ion anisotropies, dipolar spin-spin interactions, and Dzyaloshinskii-Moriya (DM) coupling. Using Negativity, Measurement-Induced Non-locality ...