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Live trends in quantum computing research, updated daily from arXiv.
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On the role of induced electric field in the time-dependent Aharonov-Bohm effect
Masashi Wakamatsu·Nov 11, 2025
Whether the time-dependent Aharonov-Bohm (AB) effect even exists or not has been the subject of long-standing debate. There are two factors complicating the problem. First, in the closed spacetime line integral of the vector potential that is thought...
Quantum-centric machine learning for molecular dynamics
Yanxian Tao, Lingyun Wan, Xiongzhi Zeng +4 more·Nov 11, 2025
Accurate and efficient prediction of electronic wavefunctions is central to ab initio molecular dynamics (AIMD) and electronic structure theory. However, conventional ab initio methods require self-consistent optimization of electronic states at ever...
Local spreading of stabilizer Rényi entropy in a brickwork random Clifford circuit
Somnath Maity, Ryusuke Hamazaki·Nov 11, 2025
Nonstabilizerness, or magic, constitutes a fundamental resource for quantum computation and a crucial ingredient for quantum advantage. Recent progress has substantially advanced the characterization of magic in many-body quantum systems, with stabil...
Quantum Semantic Communication Beyond the Shannon-Wyner Channel Capacity
Min Wang, Gui-Fa Zhu, Guo-Fei Long +5 more·Nov 11, 2025
Quantum Secure Direct Communication (QSDC), a paradigm-shifting breakthrough in quantum communication, exploits quantum states for unmediated information transmission. Rooted in the inviolable fundamental laws of quantum mechanics, QSDC enables ultra...
Optical spectroscopy of single- and two-ion transitions in an antiferromagnetic stoichiometric rare-earth crystal
Masaya Hiraishi, Gabrielle A. Hunter-Smith, Gavin G. G. King +5 more·Nov 11, 2025
We characterise optical transitions of neodymium ions (Nd3+) in antiferromagnetic neodymium gallate (NdGaO3) with applied fields up to 3 T. The magnetic phase of this material has not previously been studied with the field along its magnetisation axi...
Multipartite steering verification with imprecise measurements
Zeyang Lu, Chan Li, Gang Wang +1 more·Nov 11, 2025
Quantum steering is a fundamental quantum correlation that plays a pivotal role in quantum technologies, but its verification crucially relies on precise measurements -- an assumption often undermined by practical imperfections. Here, we investigate ...
New XOR & XNOR Operations in Instantaneous Noise-Based Logic
Nasir Kenarangui, Arthur Powalka, Laszlo B. Kish·Nov 11, 2025
Instantaneous Noise-Based Logic (INBL) presents a classical noise-based computing framework as an alternative to quantum computation, though some logic gates remain unimplemented for achieving universality over superpositions. INBL encodes M noise-...
Dual Magnetic and Electric Dipole Symmetry: Pseudo Angular Momentum in Parity Space and the Electric Landé $g$-Factor
Michael E. Tobar·Nov 10, 2025
EDMs probe fundamental symmetries and underpin BSM searches. We give a symmetry-based description, analogous to the Zeeman effect, that puts magnetic and electric dipoles on equal footing under EM duality. In hydrogen, $\vec B$ (pseudovector) couples...
Quantum Approximate Walk Algorithm
Ziqing Guo, Jan Balewski, Wenshuo Hu +2 more·Nov 10, 2025
The encoding of classical to quantum data mapping through trigonometric functions within arithmetic-based quantum computation algorithms leads to the exploitation of multivariate distributions. The studied variational quantum gate learning mechanism,...
Chiral Quantum Optics with Scalable Quantum Dot Dimers
L. Hallacy, D. Hallett, A. Fenzl +8 more·Nov 10, 2025
We present a scalable method for electrically tuning multiple spatially separated quantum dots embedded in photonic crystal waveguides. Ion implantation into the top p-doped layer of a p-i-n diode creates high-resistivity tracks, providing electrical...
Schrödinger equation is $\mathcal{R}$-separable in toroidal coordinates
Matheus E. Pereira, Alexandre G. M. Schmidt·Nov 10, 2025
We present, for the first time, exact solutions for the Schrödinger equation in Moon and Spencer's toroidal coordinates, and in the electromagnetic toroidal--poloidal coordinate systems. Curiously, both systems present a fractional angular momentum, ...
The three kinds of three-qubit entanglement
Szilárd Szalay·Nov 10, 2025
We construct an important missing piece in the entanglement theory of pure three-qubit states, which is a polynomial measure of W-entanglement, working in parallel to the three-tangle, which is a polynomial measure of GHZ-entanglement, and to the bip...
Nonclassical State Generation and Quantum Metrology in the Double-Morse Potential
Firoz Chogle, Berihu Teklu, Jorge Zubelli +1 more·Nov 10, 2025
In this paper, we investigate the nonlinear properties of the double-Morse potential as a possible resource for single-mode quantum states because of its double-well structure and anharmonicity. We derive the ground state wave function and the associ...
A ballistic upper bound on the accumulation of bosonic on-site energies
Tomotaka Kuwahara, Marius Lemm, Carla Rubiliani·Nov 10, 2025
In this note, we study transport properties of the dynamics generated by translation-invariant and possibly long-ranged Hamiltonians of Bose-Hubbard type. For translation-invariant initial states with controlled boson density, we improve the known bo...
Measuring multipartite entanglement efficiently by testing symmetries
Xiaoyu Liu, Jordi Tura, Albert Rico·Nov 10, 2025
Recently, a technique known as quantum symmetry test has gained increasing attention for detecting bipartite entanglement in pure quantum states. In this work we show that, beyond qualitative detection, a family of well-defined measures of bipartite ...
Optimizing quantum violation for multipartite facet Bell inequalities
Jin-Fu Chen, Mengyao Hu, Jordi Tura·Nov 10, 2025
Nonlocality shapes quantum correlations, revealed through the violation of Bell inequalities. The intersection of all valid Bell inequalities is the so-called local polytope. In multipartite systems, characterizing the local polytope quickly becomes ...
Quantum Calculations of the Cavity Shift in Electron Magnetic Moment Measurements
Hannah Day, Roni Harnik, Yonatan Kahn +2 more·Nov 10, 2025
The measurement of the anomalous electron magnetic moment $g-2$ through quantum transitions of a single trapped electron is the most stringent test of quantum field theory. These experiments are now so precise that they must account for the effects o...
Loss Tomography for Quantum Networks
Jake Navas, Jaden Brewer, Jaime Diaz +3 more·Nov 10, 2025
With steady progress in the development of quantum networks, the question on how to best provide end-to-end characterization of such networks (Quantum Network Tomography) is quickly becoming more pressing. Initial results demonstrated how we can util...
Extending QAOA-GPT to Higher-Order Quantum Optimization Problems
Leanto Sunny, Abhinav Rijal, George Siopsis·Nov 10, 2025
The recently proposed QAOA-GPT framework demonstrated that generative pre-trained transformers can learn mappings between problem graphs and optimized quantum circuits for the Quantum Approximate Optimization Algorithm (QAOA). In this work, we extend...
Decoherence from universal tomographic measurements
Dorje C. Brody, Rishindra Melanathuru·Nov 10, 2025
The decoherence phenomenon arising from an environmental monitoring of the state of a quantum system, as opposed to monitoring of a preferred observable, is worked out in detail using two equivalent formulations, namely, repeated applications of univ...