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Live trends in quantum computing research, updated daily from arXiv.
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Disorder-broadened topological Hall phase and anomalous Hall scaling in FeGe
Chaman Gupta, Chris Matsumura, Hongbin Yang +9 more·Nov 7, 2025
Magnetic skyrmions are topologically protected spin textures that are promising candidates for low-power spintronic memory and logic devices. Realizing skyrmion-based devices requires an understanding of how structural disorder affects their stabilit...
Symmetry-enriched topological order and quasi-fractonic behavior in $\mathbb{Z}_N$ stabilizer codes
Siyu He, Hao Song·Nov 6, 2025
We study a broad class of qudit stabilizer codes, termed $\mathbb{Z}_N$ bivariate-bicycle (BB) codes, arising either as two-dimensional realizations of modulated gauge theories or as $\mathbb{Z}_N$ generalizations of binary BB codes. Our central find...
Quantum doubles in symmetric blockade structures
Hans Peter Büchler, Tobias F. Maier, Simon Fell +1 more·Nov 6, 2025
Exactly solvable models of topologically ordered phases with non-abelian anyons typically require complicated many-body interactions which do not naturally appear in nature. This motivates the "inverse problem" of quantum many-body physics: given mic...
Emergent Dynamical Translational Symmetry Breaking as an Order Principle for Localization and Topological Transitions
Yucheng Wang·Nov 6, 2025
Localization transitions represent a fundamental class of continuous phase transitions, yet they occur without any accompanying symmetry breaking. We resolve this by introducing the concept of dynamical translational symmetry (DTS), which is defined ...
Novel Encodings of Homology, Cohomology, and Characteristic Classes
Itai Maimon·Nov 5, 2025
Topological quantum error-correcting codes (QECC) encode a variety of topological invariants in their code space. A classic structure that has not been encoded directly is that of obstruction classes of a fiber bundle, such as the Chern or Euler clas...
Clifford Hierarchy Stabilizer Codes: Transversal Non-Clifford Gates and Magic
Ryohei Kobayashi, Guanyu Zhu, Po-Shen Hsin·Nov 4, 2025
A fundamental problem in fault-tolerant quantum computation is the tradeoff between universality and dimensionality, exemplified by the the Bravyi-König bound for $n$-dimensional topological stabilizer codes. In this work, we extend topological Pauli...
Optical Vortex Transfer and Dispersion-Controlled Light Propagation in an Er YAG Three-Level Quantum System
Arefeh Vaezi, Ali Mortezapour, Seyed Hossein Asadpour·Nov 4, 2025
We theoretically investigate coherent orbital-angular-momentum (OAM) transfer and dispersion-controlled light propagation in a ladder-type Er YAG three-level system. Using the density-matrix formalism and coupled Maxwell-Bloch equations, we derive an...
Current cross-correlation spectroscopy of Majorana bound states
Michael Ridley, Eliahu Cohen, Christian Flindt +1 more·Nov 3, 2025
The clock speed of topological quantum computers based on Majorana zero mode (MZM)-supporting nanoscale devices is limited by the time taken for electrons to traverse the device. We employ the time-dependent Landauer-B{ü}ttiker transport theory for c...
On the Fibonacci-Lucas Ground State Degeneracies of the One-Dimensional Antiferromagnetic Ising Model at Criticality
Bastian Castorene, Francisco J. Peña, Patricio Vargas·Nov 3, 2025
This work examines the one-dimensional antiferromagnetic Ising model in a longitudinal magnetic field, comparing open-chain and closed-ring geometries. At the nontrivial quantum critical point (QCP) $B_{\mathrm{crit}} = B/J = 2$, we perform a microca...
High-temperature superconducting Majorana fermions platforms in the layered Kitaev Materials: Case study of $Li_2IrO_3$
Elnaz Rostampour, Badie Ghavami·Nov 3, 2025
Recent advances in Kitaev materials have highlighted their potential to host Majorana fermions without or high-temperature of superconductivity. In this research, we propose $Li_2IrO_3$ as a promising High-temperature superconducting platform support...
Exchange operation of Majorana zero modes in topological insulator-based Josephson trijunctions
Yunxiao Zhang, Zhaozheng Lyu, Xiang Wang +19 more·Nov 2, 2025
Majorana zero modes are anyons obeying non-Abelian exchange statistics distinct from fermions or bosons. While significant progresses have been achieved in the past two decades in searching for these exotic excitations in solid-state systems, their n...
Magnetic field in vacuum of quantum spinor matter induced by a cosmic string in three-dimensional space
Yu. I. Pylypchuk, P. O. Nakaznyi, O. V. Barabash +2 more·Oct 31, 2025
A linear magnetic topological defect (cosmic string) is modeled as a magnetic flux-carrying tube that is impenetrable to external spinor matter. The matter field is quantized in the background of this tube, with the most general set of boundary condi...
Adiabatic Electron Transfer in the Barrierless and Marcus-Inverted Regimes
Ethan Abraham·Oct 31, 2025
While the Marcus theory of electron transfer defines the reorganization energy as a classical quantity, recent work has shown for the first time that the reorganization energy is actually a quantum mechanical object that depends on the electronic cou...
Resolving the phase of a Dirac topological state via interferometric photoemission
Shiri Gvishi, Ittai Sidilkover, Shaked Rosenstein +8 more·Oct 31, 2025
The electronic wavefunction is at the heart of physical phenomena, defining the frontiers of quantum materials research. While the amplitude of the electron wavefunction in crystals can be measured with state-of-the-art probes in unprecedented resolu...
Perfect Particle Transmission through Duality Defects
Atsushi Ueda, Vic Vander Linden, Laurens Lootens +3 more·Oct 30, 2025
We study wavepackets that propagate across (a) topological interfaces in quantum spin systems exhibiting non-invertible symmetries and (b) duality defects coupling dual theories. We demonstrate that the transmission is always perfect, and that a part...
Topological phases of the Bogoliubov de Gennes Hamiltonian
Klaus Ziegler·Oct 30, 2025
We investigate a two-dimensional superconducting system with a smoothly and periodically varying order parameter. The order parameter is modulated along one direction while remaining uniform in the perpendicular direction, leading to a spatially peri...
Invariants for (2+1)D bosonic crystalline topological insulators for all 17 wallpaper groups
Vladimir Calvera, Naren Manjunath, Maissam Barkeshli·Oct 30, 2025
We study bosonic symmetry-protected topological (SPT) phases in (2+1) dimensions with symmetry $G = G_{\text{space}}\times K$, where $G_{\text{space}}$ is a general wallpaper group and $K=\text{U}(1),\mathbb{Z}_N, \text{SO}(3)$ is an internal symmetr...
Theories of Superconducting Diode Effects
Daniel Shaffer, Alex Levchenko·Oct 29, 2025
Superconducting diode effects (SDE), both in bulk superconductors and in Josephson junctions, have garnered a lot of attention due to potential applications in classical and quantum computing, as well as superconducting sensors. Here we review variou...
Super-Moiré Spin Textures in Twisted Antiferromagnets
King Cho Wong, Ruoming Peng, Eric Anderson +15 more·Oct 29, 2025
Stacking two-dimensional (2D) layered materials offers a powerful platform to engineer electronic and magnetic states. In general, the resulting states, such as Moiré magnetism, have a periodicity at the length scale of the Moiré unit cell. Here, we ...
Spin Glass Dynamics on Complex Hardware Topologies: A Bond-Correlated Percolation Approach
Viviana Gómez, Gabriel Téllez, Fernando J. Gómez-Ruiz·Oct 28, 2025
Understanding how frustration and disorder shape relaxation in complex systems is a central problem in statistical physics and quantum annealing. Spin-glass models provide a natural framework to explore this connection, as their energy landscapes are...