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Live trends in quantum computing research, updated daily from arXiv.
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Vacuum Energy and Topological Mass in Interacting Elko and Scalar Field Theories
A. J. D. Farias Junior, A. Smirnov, Herondy F. Santana Mota +1 more·Dec 9, 2025
In this paper, we consider a four-dimensional system composed of a mass-dimension-one fermionic field, also known as Elko, interacting with a real scalar field. Our main objective is to analyze the Casimir effects associated with this system, assumin...
Spectroscopic readout of chiral photonic topology in a single-cavity spin-orbit-coupled Bose-Einstein condensate
Kashif Ammar Yasir, Gao Xianlong·Dec 9, 2025
Topological photonic phases are typically identified through band reconstruction, steady-state transmission, or real-space imaging of edge modes. In this work, we present a framework for spectroscopic readout of chiral photonic topology in a single d...
Generation of high-OAM ultraviolet twisted light for RF-photoinjector applications
A. S. Dyatlov, D. M. Dolgintsev, V. V. Gerasimov +7 more·Dec 9, 2025
The generation of relativistic vortex electron beams via photoemission requires ultraviolet laser beams with well-controlled orbital angular momentum (OAM) and compatibility with radio-frequency (RF) photoinjector drive-laser systems. High-OAM vortex...
Observation of a Topological Berry Phase with a Single Phonon in an Ion Microtrap Array
Justin F. Niedermeyer, Nathan K. Lysne, Katherine C. McCormick +11 more·Dec 8, 2025
Controlled quantum mechanical motion of trapped atomic ions can be used to simulate and explore collective quantum phenomena and to process quantum information. Groups of cold atomic ions in an externally applied trapping potential self-organize into...
Entanglement Through Topological Defects: Reconciling Theory with Numerics
Christian Northe, Paolo Rossi·Dec 8, 2025
Present theoretical predictions for the entanglement entropy through topological defects are violated by numerical simulations. In order to resolve this, we introduce a paradigm shift in the preparation of reduced density matrices in the presence of ...
Real-time collisions of fractional charges in a trapped-ion Jackiw-Rebbi field theory
Alan Kahan, Pablo Viñas, Torsten V. Zache +1 more·Dec 8, 2025
We propose and analyze a trapped-ion quantum simulator of the Jackiw-Rebbi model, a paradigmatic quantum field theory in (1+1) dimensions where solitonic excitations of a scalar field can bind fermionic zero modes leading to fractionally-charged exci...
A scalable and real-time neural decoder for topological quantum codes
Andrew W. Senior, Thomas Edlich, Francisco J. H. Heras +21 more·Dec 8, 2025
Fault-tolerant quantum computing will require error rates far below those achievable with physical qubits. Quantum error correction (QEC) bridges this gap, but depends on decoders being simultaneously fast, accurate, and scalable. This combination of...
Multiple re-entrant topological windows induced by generalized Bernoulli disorder
Ruijiang Ji, Yunbo Zhang, Shu Chen +1 more·Dec 7, 2025
We investigate re-entrant topological behavior in a one-dimensional Su-Schrieffer-Heeger model with generalized Bernoulli-type disorder in the intradimer hopping amplitudes. We show that varying the values and probabilities of the disorder distributi...
Exploring electron spin dynamics in spin chains using defects as a quantum probe
L. Soriano, A. Manoj-Kumar, G. Gerbaud +7 more·Dec 7, 2025
We investigate the quantum dynamics of the electron spin resonance of topological defects (edge state) in dimerized chains. These objects are discontinuities of the spin chain protected by the properties of the global system leading to a quantum many...
Mitigating Barren plateaus in quantum denoising diffusion probabilistic models
Haipeng Cao, Kaining Zhang, Dacheng Tao +1 more·Dec 7, 2025
Quantum generative models leverage quantum superposition and entanglement to enhance learning efficiency for both classical and quantum data. The quantum denoising diffusion probabilistic model (QuDDPM), inspired by its classical counterpart, has bee...
Spurious Strange Correlators in Symmetry-Protected Topological Phases
Wei-Liang Gao, Jie-Yu Zhang, Zheng-Xin Liu +1 more·Dec 7, 2025
Strange correlator is a powerful tool widely used in detecting symmetry-protected topological (SPT) phases. However, the result of strange correlator crucially relies on the adoption of the reference state. In this work, we report that an ill-chosen ...
Exploring the topology induced by non-Markovian Liouvillian exceptional points
Hao-Long Zhang, Yan Wang, Wen Ning +6 more·Dec 6, 2025
Non-Hermitian (NH) systems can display exotic topological phenomena without Hermitian counterparts, enabled by exceptional points (EPs). So far, investigations of NH topology have been restricted to EPs of the NH Hamiltonian, which governs the system...
Transverse response from anisotropic Fermi surfaces
Abhiram Soori·Dec 4, 2025
We demonstrate that an anisotropic and rotated Fermi surface can generate a finite transverse response in electron transport, even in the absence of a magnetic field or Berry curvature. Using a two-dimensional continuum model, we show that broken $k_...
Probing chiral topological states with permutation defects
Yarden Sheffer, Ruihua Fan, Ady Stern +2 more·Dec 4, 2025
The hallmark of two-dimensional chiral topological phases is the existence of anomalous gapless modes at the spatial boundary. Yet, the manifestation of this edge anomaly within the bulk ground-state wavefunction itself remains only partially underst...
In-plane anomalous features in the 3D quantum Hall regime
Ming Lu, Xiao-Xiao Zhang·Dec 4, 2025
Studies of the 3D quantum Hall effect (QHE) have primarily emphasized transport features that mimic the well-established 2D QHE. In this work, we show that qualitatively new features arise when an in-plane magnetic field is applied to a 3D Weyl semim...
Deformed LDPC codes with spontaneously broken non-invertible duality symmetries
Pranay Gorantla, Tzu-Chen Huang·Dec 3, 2025
Low-density parity check (LDPC) codes are a well known class of Pauli stabiliser Hamiltonians that furnish fixed-point realisations of nontrivial gapped phases such as symmetry breaking and topologically ordered (including fracton) phases. In this wo...
Edge bits in average symmetry protected topological mixed state
Yoshihito Kuno·Dec 3, 2025
Edge bit in an average symmetry protected topological (ASPT) mixed state is studied. The state is protected by one strong $Z_2$ and one weak (average) $Z_2$ symmetries. As analogous objects of pure symmetry protected topological (SPT) states, the ASP...
Quantum Topological Graph Neural Networks for Detecting Complex Fraud Patterns
Mohammad Doost, Mohammad Manthouri·Dec 3, 2025
We propose a novel QTGNN framework for detecting fraudulent transactions in large-scale financial networks. By integrating quantum embedding, variational graph convolutions, and topological data analysis, QTGNN captures complex transaction dynamics a...
Many-body symmetry-protected zero boundary modes of synthetic photo-magnonic crystals
Alan Gardin, Emilio Cobanera, Giuseppe C. Tettamanzi·Dec 2, 2025
The topological classification of insulators and superconductors, the "ten-fold way", is grounded on fermionic many-body symmetries and has had a dramatic impact on many fields of physics. Therefore, it seems equally important to investigate a simila...
Universal nondiffractive topological spin textures in vortex cores of light and sound
Elena Annenkova, Andrei Afanasev, Etienne Brasselet·Dec 2, 2025
We report universal skyrmionic spin textures in the cores of optical and acoustic vortex beams, described within the framework of Laguerre-Gaussian modes. We analytically demonstrate nondiffractive propagating spin merons, independent of whether the ...