Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantization of Physical Interaction Strengths via Singular Moduli
Prasoon Saurabh·Dec 25, 2025
Since the 2019 redefinition of the SI units, precision metrology has sought to anchor all physical quantities to fundamental constants and integer invariants. While the optical frequency comb revolutionized timekeeping by discretizing the continuum o...
Spectroscopic Search for Topological Protection in Open Quantum Hardware: The Dissipative Mixed Hodge Module Approach
Prasoon Saurabh·Dec 25, 2025
Standard spectroscopic protocols model the dynamics of open quantum systems as a superposition of isolated, exponentially decaying eigenmodes. This paradigm fails fundamentally at Exceptional Points, where the eigenbasis collapses and the response be...
Topological guidance of a self-propelled particle
Ethan Andersson, Valeri Frumkin·Dec 25, 2025
Topological phenomena typically govern the behavior of delocalized waves, giving rise to robust transport in electronic, photonic, and mechanical systems. Whether similar principles can directly control the motion of a localized particle, particularl...
Algebraic Fusion in a (2+1)-dimensional Lattice Model with Generalized Symmetries
Chinmay Giridhar, Philipp Vojta, Zohar Nussinov +2 more·Dec 24, 2025
The notion of quantum symmetry has recently been extended to include reduced-dimensional transformations and algebraic structures beyond groups. Such generalized symmetries lead to exotic phases of matter and excitations that defy Landau's original p...
Geometry and quantum brachistochrone analysis of multiple entangled spin-1/2 particles under all-range Ising interaction
B. Amghar, M. Yachi, M. Amghar +3 more·Dec 24, 2025
We present a unified geometric and dynamical framework for a physical system consisting of $n$ spin-$1/2$ particles with all-range Ising interaction. Using the Fubini-Study formalism, we derive the metric tensor of the associated quantum state manifo...
Hybrid digital-analog protocols for simulating quantum multi-body interactions
Or Katz, Alexander Schuckert, Tianyi Wang +3 more·Dec 24, 2025
While quantum simulators promise to explore quantum many-body physics beyond classical computation, their capabilities are limited by the available native interactions in the hardware. On many platforms, accessible Hamiltonians are largely restricted...
Coupled-wire construction of non-Abelian higher-order topological phases
Jiaxin Pan, Longwen Zhou·Dec 24, 2025
Non-Abelian topological charges (NATCs), characterized by their noncommutative algebra, offer a framework for describing multigap topological phases beyond conventional Abelian invariants. While higher-order topological phases (HOTPs) host boundary s...
Bridging Microscopic Constructions and Continuum Topological Field Theory of Three-Dimensional Non-Abelian Topological Order
Yizhou Huang, Zhi-Feng Zhang, Qing-Rui Wang +1 more·Dec 24, 2025
In this paper, we bridge this gap systematically by establishing an explicit correspondence between continuum topological field theory and microscopic lattice constructions of three-dimensional non-Abelian topological orders. While Wilson operators d...
Higher-Dimensional Information Lattice: Quantum State Characterization through Inclusion-Exclusion Local Information
Ian Matthias Flór, Claudia Artiaco, Thomas Klein Kvorning +1 more·Dec 23, 2025
We generalize the information lattice, originally defined for one-dimensional open-boundary chains, to characterize quantum many-body states in higher-dimensional geometries. In one dimension, the information lattice provides a position- and scale-re...
Simulating fermionic fractional Chern insulators with infinite projected entangled-pair states
Hao Chen, Titus Neupert, Juraj Hasik·Dec 23, 2025
Infinite projected entangled-pair states (iPEPS) provide a powerful variational framework for two-dimensional quantum matter and have been widely used to capture bosonic topological order, including chiral spin liquids. Here we extend this approach t...
Topological resolution of conical intersection seams and the coupled cluster bifurcation via mixed Hodge modules
Prasoon Saurabh·Dec 23, 2025
The rigorous description of Conical Intersections (CIs) remains the central challenge of non-adiabatic quantum chemistry. While the ``Yarkony Seam'' -- the $(3N-8)$-dimensional manifold of degeneracy -- is well-understood geometrically, its accurate ...
Profusion of Symmetry-Protected Qubits from Stable Ergodicity Breaking
Thomas Iadecola, Rahul Nandkishore·Dec 23, 2025
We show how combining a discrete symmetry with topological Hilbert space fragmentation can give rise to exponentially many topologically stable qubits protected by a single discrete symmetry. We illustrate this explicitly with the example of the $\ma...
Storage and retrieval of optical skyrmions with topological characteristics
Jinwen Wang, Xin Yang, Yun Chen +10 more·Dec 23, 2025
Optical skyrmions are topological structures of light whose defining property, the skyrmion number, is robust against perturbations. This makes them attractive for applications in quantum information storage, where resilience to decoherence is paramo...
Non-Hermitian Exceptional Topology on a Klein Bottle Photonic Circuit
Ze-Sheng Xu, J. Lukas K. König, Andrea Cataldo +8 more·Dec 23, 2025
Non-Hermitian physics has unlocked a wealth of unconventional wave phenomena beyond the reach of Hermitian systems, with exceptional points (EPs) driving enhanced sensitivity, nonreciprocal transport, and topological behavior unique to non-Hermitian ...
Quantum Geometric Tensor in the Wild: Resolving Stokes Phenomena via Floquet-Monodromy Spectroscopy
Prasoon Saurabh·Dec 23, 2025
Standard topological invariants, such as the Chern number and Berry phase, form the bedrock of modern quantum matter classification. However, we demonstrate that this framework undergoes a \textbf{catastrophic failure} in the presence of essential si...
Learning transitions of topological surface codes
Finn Eckstein, Bo Han, Simon Trebst +1 more·Dec 22, 2025
For the surface code, topological quantum order allows one to encode logical quantum information in a robust, long-range entangled many-body quantum state. However, if an observer probes this quantum state by performing measurements on the underlying...
Orbital Magnetization Reveals Multiband Topology
Chun Wang Chau, Robert-Jan Slager, Wojciech J. Jankowski·Dec 22, 2025
We demonstrate that nontrivial multiband topological invariants of electronic wavefunctions can be revealed through orbital magnetization responses to external magnetic fields. We find that decomposing orbital magnetization into energetic and quantum...
Quantum circuit algorithm for topological invariants of second order topological many-body quantum magnets
Sebastián Domínguez-Calderón, Marcel Niedermeier, Jose L. Lado +1 more·Dec 22, 2025
Topological quantum matter represents a flexible playground to engineer unconventional excitations. While non-interacting topological single-particle systems have been studied in detail, topology in quantum many-body systems remains an open problem. ...
Higher lattice gauge theory from representations of 2-groups and 3+1D topological phases
Latévi M. Lawson, Prince K. Osei·Dec 22, 2025
We construct a higher lattice gauge theory based on the representation of 2-groups described by a category of crossed modules on a lattice model described by path 2-groupoids. Using these lattice gauge representations, an exactly solvable Hamiltonian...
Trigonometric continuous-variable gates and hybrid quantum simulations of the sine-Gordon model
Tommaso Rainaldi, Victor Ale, Matt Grau +5 more·Dec 22, 2025
Hybrid qubit-qumode quantum computing platforms provide a natural setting for simulating interacting bosonic quantum field theories. However, existing continuous-variable gate constructions rely predominantly on polynomial functions of canonical quad...