Papers
Live trends in quantum computing research, updated daily from arXiv.
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Generalizing quantum dimensions: Symmetry-based classification of local pseudo-Hermitian systems and the corresponding domain walls
Yoshiki Fukusumi, Taishi Kawamoto·Nov 14, 2025
We study conformal field theories (CFTs) and their classifications from a modern perspective based on the abstract algebraic formalism of symmetries or conserved charges, known as symmetry topological field theories (SymTFTs). By studying the algebra...
Parametric resonance in a spin-1/2 chain: dynamical effects of nontrivial topology
Mahmoud T. Elewa, M. I. Dykman·Nov 14, 2025
Resonant parametric modulation is a major tool of studying magnetic systems. For a spin-1/2 chain in a strong magnetic field, the resulting excitations can be mapped on fermionic excitations in the Kitaev chain. We show that the response to the modul...
Ordinary lattice defects as probes of topology
Aiden J. Mains, Jia-Xin Zhong, Yun Jing +1 more·Nov 13, 2025
In addition to topological lattice defects such as dislocations and disclinations, crystals are also accompanied by unavoidable ordinary defects, devoid of any non-trivial geometry or topology, among which vacancies, Schottky defects, substitutions, ...
Supernematic
Dan Mao, Eun-Ah Kim·Nov 13, 2025
Quantum theory of geometrically frustrated systems is usually approached as a gauge theory where the local conservation law becomes the Gauss law. Here we show that it can do something fundamentally different: enforce a global conserved quantity via ...
Enhanced shortcuts to adiabaticity for coherent atom transport in a family of two-dimensional dynamical optical lattices
Sascha H. Hauck, Vladimir M. Stojanovic·Nov 13, 2025
In view of the compelling need for coherent atom transport as a prerequisite for a variety of emerging quantum technologies, we investigate such transport on the example of an adjustable family of two-dimensional optical lattices [L. Tarruell {\em et...
Addressable fault-tolerant universal quantum gate operations for high-rate lift-connected surface codes
Josias Old, Juval Bechar, Markus Müller +1 more·Nov 13, 2025
Quantum low-density parity check (qLDPC) codes are among the leading candidates to realize error-corrected quantum memories with low qubit overhead. Potentially high encoding rates and large distance relative to their block size make them appealing f...
Measurement protocol for detecting correlated topological insulators in synthetic quantum systems
Yixin Ma, Chao Xu, Shenghan Jiang·Nov 13, 2025
Two-dimensional topological insulators, characterized by symmetry-protected anomalous boundary modes, have been generalized to the strongly correlated regime for both bosonic and fermionic systems. As correlated topological insulators (TI) approach e...
Probing Topological Stability with Nonlocal Quantum Geometric Markers
Quentin Marsal, Hui Liu, Emil J. Bergholtz +1 more·Nov 12, 2025
Spatially resolved local quantum geometric markers play a crucial role in the diagnosis of topological phases without long-range translational symmetry, including amorphous systems. Here, we focus on the nonlocality of such markers. We demonstrate th...
Green Function Invariants for Floquet Topological Superconductivity Induced by Proximity Effects
Mohamed Assili, Panagiotis Kotetes·Nov 12, 2025
We bring forward a Green function approach for the prediction of Floquet topological phases in driven superconductor-semiconductor hybrids. Although it is common to treat the superconducting component as a mere Cooper-pair reservoir, it was recently ...
Topological Quantum Compilation Using Mixed-Integer Programming
Pavel Rytir, Phillip C. Burke, Christos Aravanis +2 more·Nov 12, 2025
We introduce the Mixed-Integer Quadratically Constrained Quadratic Programming framework for the quantum compilation problem and apply it in the context of topological quantum computing. In this setting, quantum gates are realized by sequences of ele...
Interferometric Braiding of Anyons in Chern Insulators
Felix A. Palm, Nader Mostaan, Nathan Goldman +1 more·Nov 12, 2025
Coherent control and braiding of anyons remain central challenges in realizing topologically protected quantum operations. We propose a Ramsey interferometry protocol to directly access the geometric phases associated with anyons in fractional Chern ...
Quantum Frustration as a Protection Mechanism in Non-Topological Majorana Qubits
E. Novais·Nov 12, 2025
I analyze the decoherence of a $π$-junction qubit encoded by two co-located Majorana modes. Although not topologically protected, the qubit leverages distinct spatial profiles to couple to two independent environmental baths, realizing the phenomenon...
Infinite-component $BF$ field theory: Connection of fracton order, Toeplitz braiding, and non-Hermitian amplification
Bo-Xi Li, Peng Ye·Nov 12, 2025
Building on the infinite-component Chern--Simons theory of three-dimensional fracton phases by Ma et al. [Phys. Rev. B 105, 195124 (2022)] and the Toeplitz braiding of anyons by Li et al.~[Phys. Rev B 110, 205108 (2024)], we show that stacking $(3+1)...
Topological subregions in Chern Simons theory and topological string theory
Gabriel Wong·Nov 11, 2025
The standard, gapped entanglement boundary condition in Chern Simons theory breaks the topological invariance of the theory by introducing a complex structure on the entangling surface. This produces an infinite dimensional subregion Hilbert space, a...
Extending QAOA-GPT to Higher-Order Quantum Optimization Problems
Leanto Sunny, Abhinav Rijal, George Siopsis·Nov 10, 2025
The recently proposed QAOA-GPT framework demonstrated that generative pre-trained transformers can learn mappings between problem graphs and optimized quantum circuits for the Quantum Approximate Optimization Algorithm (QAOA). In this work, we extend...
A Hierarchy of Fibonacci Forbidden-Word Hamiltonians: From the Golden Chain to the Plastic Chain and Aperiodic Order
Marcelo Maciel Amaral·Nov 9, 2025
We introduce an infinite, scale-aligned hierarchy of one-dimensional, frustration-free Hamiltonians by forbidding the minimal forbidden factors of the Fibonacci word up to length $F_K$, the $K$-th Fibonacci number. The ground-state languages have exp...
Exploring Replica Symmetry Breaking and Topological Collapse in Spin Glasses with Quantum Annealing
Kumar Ghosh·Nov 9, 2025
Replica symmetry breaking (RSB) underlies the complex organization of disordered systems, yet quantitative validation beyond $N \sim 100$ spins has remained computationally challenging. We use quantum annealing to access ground states of the Sherring...
Self-induced manipulation of biphoton entanglement in topologically distinct modes
Wei-Wei Zhang, Chao Chen, Jizhou Wu·Nov 8, 2025
Biphoton states have shown promising applications in quantum information processing, including quantum communications, quantum metrology, and quantum imaging. The generation and manipulation of biphoton entanglement in topologically distinct modes pa...
Scaling behavior of dissipative systems with imaginary gap closing
Jinghui Pi, Xingli Li, Yangqian Yan·Nov 7, 2025
Point-gap topology, characterized by spectral winding numbers, is crucial to non-Hermitian topological phases and dramatically alters real-time dynamics. In this paper, we study the evolution of quantum particles in dissipative systems with imaginary...
Compact localized fermions and Ising anyons in a chiral spin liquid
Tim Bauer, Johannes Reuther·Nov 7, 2025
Quasiparticle hybridization remains a major challenge to realizing and controlling exotic states of matter in existing quantum simulation platforms. We report the absence of hybridization for compact localized states (CLS) emerging in the chiral spin...