Papers
Live trends in quantum computing research, updated daily from arXiv.
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There and Back Again: A Gauging Nexus between Topological and Fracton Phases
Pranay Gorantla, Abhinav Prem, Nathanan Tantivasadakarn +1 more·Sep 23, 2025
Coupled layer constructions are a valuable tool for capturing the universal properties of certain interacting quantum phases of matter in terms of the simpler data that characterizes the underlying layers. In the study of fracton phases, the X-Cube m...
Quantum Dynamics of Electron Scattering from Skyrmions
Hareram Swain, Arijit Mandal, S. Satpathy +1 more·Sep 23, 2025
Scattering of electrons from chiral spin textures such as the skyrmions is an emerging research area due to its richness in topological quantum transport, which is significant for spintronic devices. We study the dynamical process of scattering of th...
Unifying framework for non-Hermitian and Hermitian topology in driven-dissipative systems
Clara C. Wanjura, Andreas Nunnenkamp·Sep 23, 2025
Recently, a one-to-one correspondence between non-trivial non-Hermitian topology and directional amplification has been demonstrated, theoretically and experimentally, for the case of one complex band. Here, we extend our framework to multiple bands ...
Intrinsic-perturbation induced anomalous higher-order boundary states in non-Hermitian systems
Hui-Qiang Liang, Zuxuan Ou, Linhu Li +1 more·Sep 23, 2025
The behavior of higher-order boundary states in non-Hermitian systems is elusive and thereby finding the mechanism behind these states is both essential and significant. Here, we uncover a novel mechanism that induces anomalous higher-order boundary ...
Quantum Random Synthetic Skyrmion Texture Generation, a Qiskit Simulation
Hillol Biswas·Sep 23, 2025
An integer winding, i.e., topological charge, is a characteristic of skyrmions, which are topologically nontrivial spin patterns in magnets. They emerge when smooth two-dimensional spin configurations are stabilized by conflicting interactions such a...
Cusp solitons mediated by a topological nonlinearity
Harvey Cao, Daniel Leykam·Sep 23, 2025
Nonlinearity in the Schrödinger equation gives rise to rich phenomena such as soliton formation, modulational instability, and self-organization in diverse physical systems. Motivated by recent advances in engineering nonlinear gauge fields in Bose-E...
Chiral Color Code : Single-shot error correction for exotic topological order
Dongjin Lee, Beni Yoshida·Sep 22, 2025
We present a family of simple three-dimensional stabilizer codes, called the chiral color codes, that realize fermionic and chiral topological orders. In the qubit case, the code realizes the topological phase of a single copy of the fermionic toric ...
Localization and topological signatures under periodic twisting
James Walkling, Antonio Štrkalj, F. Nur Ünal·Sep 22, 2025
We theoretically explore a dynamical generalization of the Aubry-André model in two dimensions formed by superimposing two square-lattice potentials. Motivated by the rich physics emerging at different twist angles between the two lattices at equilib...
The Many Faces of Non-invertible Symmetries
Shadi Ali Ahmad, Marc S. Klinger, Yifan Wang·Sep 22, 2025
We investigate the interplay between algebraic and categorical notions of non-invertible symmetries. In particular, a fusion categorical symmetry $\mathcal{C}$ is shown to induce an algebraic symmetry encoded in a weak Hopf algebra $H$ which is Tanna...
Entanglement manifestation of knot topology in a non-Hermitian lattice
Guoying Zhang, Li Wang, Shu Chen·Sep 22, 2025
Although the homotopy-knot theory has been utilized to implement effective topological classification for non-Hermitian systems, the physical implications underlying distinct knot topologies remain ambiguous and are rarely addressed. In this work, we...
Fusion-based implementation of qLDPC codes with quantum emitters
Susan X. Chen, Matthias C. Löbl, Ming Lai Chan +2 more·Sep 21, 2025
Quantum low-density parity check (qLDPC) codes offer higher encoding rate than topological codes, e.g. surface codes, making them favourable for practical, fault-tolerant quantum computing with low overhead. These codes are particularly well-suited f...
Direct measurement of the quantum geometric tensor in pseudo-Hermitian systems
Ze-Hao Huang, Hai-Tao Ding, Li-Jun Lang·Sep 21, 2025
The quantum geometric tensor (QGT) fundamentally encodes the geometry and topology of quantum states in both Hermitian and non-Hermitian regimes. While adiabatic perturbation theory links its real part (quantum metric) and imaginary part (Berry curva...
State complexity and phase identification in adaptive quantum circuits
Guoding Liu, Junjie Chen, Xiongfeng Ma·Sep 21, 2025
Adaptive quantum circuits, leveraging measurements and classical feedback, significantly expand the landscape of realizable quantum states compared to their non-adaptive counterparts, enabling the preparation of long-range entangled states and topolo...
Quantum Printing
Gabriel Aeppli, Alexander V. Balatsky, Stefano Bonetti +8 more·Sep 20, 2025
We introduce the concept of quantum printing -- the imprinting of quantum states from photons and phonons onto quantum matter. The discussion is focusing on charged fluids (metals, superconductors, Hall fluids) and neutral systems (magnets, excitons)...
$Δ_T$ Noise as a Robust Diagnostic for Chiral, Helical and Trivial Edge Modes
Sachiraj Mishra, Colin Benjamin·Sep 20, 2025
In this article we demonstrate that $Δ_T$ noise provides a sensitive, practical probe for distinguishing chiral edge modes from topological helical and trivial (non-topological) helical edge transport. Measured under zero-current conditions, $Δ_T$ no...
Data Complexity: a threshold between Classical and Quantum Machine Learning -- Part I
Christophe Pere·Sep 19, 2025
Quantum machine learning (QML) holds promise for accelerating pattern recognition, optimization, and data analysis, but the conditions under which it can truly outperform classical approaches remain unclear. Existing research often emphasizes algorit...
Measurement-Driven Transitions between Area Law Phases
Hui Yu, Jiangping Hu·Sep 19, 2025
In recent years, quantum circuits consisting of unitary gates and projective measurements have become valuable tools for stimulating or preparing quantum many-body states with non-trivial properties. Here, we introduce and examine a measurement-only ...
Topology and Spectral Entanglement in Cavity-Mediated Photon Scattering
Eric R. Bittner, Andrei Piryatinski·Sep 18, 2025
We develop a diagrammatic theory of cavity-mediated photon-photon interactions in a topological insulator using the SSH model. The fourth-order vertex $Γ^{(4)}(ω_1,ω_2)$ governs spectral entanglement and Kerr nonlinearity, leading to a nonlinear topo...
Circuit-based characterization of finite-temperature quantum phases and self-correcting quantum memory
Ruochen Ma, Vedika Khemani, Shengqi Sang·Sep 18, 2025
Quantum phases at zero temperature can be characterized as equivalence classes under local unitary transformations: two ground states within a gapped phase can be transformed into each other via a local unitary circuit. We generalize this circuit-bas...
Magnetic-Field and Temperature Limits of a Kinetic-Inductance Traveling-Wave Parametric Amplifier
Lucas M. Janssen, Farzad Faramarzi, Henry G. LeDuc +5 more·Sep 18, 2025
Kinetic-inductance traveling-wave parametric amplifiers (KI-TWPAs) offer broadband near-quantum-limited amplification with high saturation power. Due to the high critical magnetic fields of high-kinetic-inductance materials, KI-TWPAs should be resili...