Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
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...
Renormalization-group-based preparation of matrix product states on up to 80 qubits
Moritz Scheer, Alberto Baiardi, Elisa Bäumer Marty +2 more·Oct 28, 2025
A key challenge for quantum computers is the efficient preparation of many-body entangled states across many qubits. In this work, we demonstrate the preparation of matrix product states (MPS) using a renormalization-group(RG)-based quantum algorithm...
Topological shaping of vortex neutron beams using forked phase gratings
S. McKay, S. R. Parnell, R. M. Dalgliesh +6 more·Oct 28, 2025
Beams of light or matter that carry well-defined states of orbital angular momentum (OAM) are promising probes of topological and textured condensed matter systems such as magnetic skyrmions. Using spin-echo small-angle neutron scattering (SESANS), w...
Non-Hermitian $\mathrm{sl}(3, \mathbb{C})$ three-mode couplers
B. M. Rodriguez-Lara, H. Ghaemi-Dizicheh, S. Dehdashti +3 more·Oct 28, 2025
Photonic systems with exceptional points, where eigenvalues and corresponding eigenstates coalesce, have attracted interest due to their topological features and enhanced sensitivity to external perturbations. Non-Hermitian mode-coupling matrices pro...
Topological protection of photon-pair generation in nonlinear waveguide arrays
A. Zecchetto, J. -R. Coudevylle, M. Morassi +4 more·Oct 27, 2025
Harnessing topological effects offers a promising route to protect quantum states of light from imperfections, potentially enabling more robust platforms for quantum information processing. This capability is particularly relevant for active photonic...
The injective norm of CSS quantum error-correcting codes
Stephane Dartois, Gilles Zémor·Oct 27, 2025
In this paper, we compute the injective norm - a.k.a. geometric entanglement - of standard basis states of CSS quantum error-correcting codes. The injective norm of a quantum state is a measure of genuine multipartite entanglement. Computing this mea...
Chiral gapped states are universally non-topological
Xiang Li, Ting-Chun Lin, Yahya Alavirad +1 more·Oct 27, 2025
We propose an operator generalization of the Li-Haldane conjecture regarding the entanglement Hamiltonian of a disk in a 2+1D chiral gapped groundstate. The logic applies to regions with sharp corners, from which we derive several universal propertie...