Papers
Robust topological quantum state transfer with long-range interactions in Rydberg arrays
Siri Raupach, Beatriz Olmos, Mathias B. M. Svendsen·Jan 27, 2026
We develop a theoretical framework for fast, robust and high-fidelity topological quantum state transfer in one-dimensional systems with long-range couplings, motivated by chains of Rydberg atoms with dipole-dipole interactions. Such long-range inter...
Introduction to Quantum Entanglement Geometry
Kazuki Ikeda·Jan 27, 2026
This article is an expository account aimed at viewing entanglement in finite-dimensional quantum many-body systems as a phenomenon of global geometry. While the mathematics of general quantum states has been studied extensively, this article focuses...
Dissipative diffusion in quantum state preparation: from passive cooling to system-bath engineering
Tim Pokart, Lukas König, Sebastian Diehl +1 more·Jan 26, 2026
We investigate and compare two particle number conserving protocols for the preparation of a topologically nontrivial state. The first is derived from thermally coupling the system to a cold bath, while the second is based on engineered dissipation. ...
Against probability: A quantum state is more than a list of probability distributions
Ladina Hausmann, Renato Renner·Jan 26, 2026
The state $ρ$ of a quantum system can be represented by a vector $\mathbf{P}_{\mathcal{M}}(ρ)$ of outcome probabilities for a set of measurements $\mathcal{M}$. Such representations appear throughout physics, for example, in quantum field theory via ...
A particle on a ring or: how I learned to stop worrying and love $θ$-vacua
Mohammad Aghaie, Ryosuke Sato·Jan 26, 2026
Recently, Ai, Cruz, Garbrecht, and Tamarit (ACGT)~\cite{Ai:2020ptm, Ai:2024vfa, Ai:2024cnp, Ai:2025quf} claimed that there is no strong CP problem by adopting a new order of limits in the volume and topological sector. We critically examine this prop...
Emission of nitrogen-vacancy centers in diamond shaped by topological photonic waveguide modes
Raman Kumar, Chandan, Gabriel I. López Morales +6 more·Jan 24, 2026
As the ability to integrate single photon emitters into photonic architectures improves, so does the need to characterize and understand their interaction. Here, we use a scanning diamond nanocrystal to investigate the interplay between the emission ...
Exactly Solvable Topological Phase Transition in a Quantum Dimer Model
Laura Shou, Jeet Shah, Matthew Lerner-Brecher +3 more·Jan 21, 2026
We consider a family of generalized Rokhsar-Kivelson (RK) Hamiltonians, which are reverse-engineered to have an arbitrary edge-weighted superposition of dimer coverings as their exact ground state at the RK point. We focus on a quantum dimer model on...
Anomalous Localization and Mobility Edges in Non-Hermitian Quasicrystals with Disordered Imaginary Gauge Fields
Guolin Nan, Zhijian Li, Feng Mei +1 more·Jan 21, 2026
We study anomalous localization in a one-dimensional non-Hermitian quasicrystal with a spatially disordered imaginary gauge field. The system is a generalized Aubry-André-Harper (AAH) chain with asymmetric nearest- and next-nearest-neighbor hoppings ...
Non-zero Momentum Implies Long-Range Entanglement When Translation Symmetry is Broken in 1D
Amanda Gatto Lamas, Taylor L. Hughes·Jan 20, 2026
A result by Gioia and Wang [Phys Rev X 12, 031007 (2022)] showed that translationally symmetric states having nonzero momentum are necessarily long range entangled (LRE). Here, we consider the question: can a notion of momentum for non-translation sy...
Confinement-Tunable Synthetic Gauge Fields and Floquet Topological Phenomena in a Driven Quantum Wire Qubit
Feulefack Ornela Claire, Dongmo Tedo Lynsia Saychele, Danga Jeremie Edmond +6 more·Jan 20, 2026
Theoretical analysis demonstrates that a spin qubit in a parabolic quantum wire, when driven by a bichromatic field, exhibits a confinement-tunable synthetic gauge field leading to novel Floquet topological phenomena. The underlying mechanism for top...
Advances in non-Hermitian dynamics of quadratic bosonic systems
Huawei Zhao, Xinlei Liu, Xinyao Huang +1 more·Jan 20, 2026
Non-Hermitian physics has emerged as a rapidly advancing field of research, revealing a range of novel phenomena and potential applications. Traditional non-Hermitian Hamiltonians are typically simulated by constructing asymmetric couplings or by int...
Evolution of Vortex Strings after a Thermal Quench in a Holographic Superfluid
Chuan-Yin Xia, András Grabarits, Hua-Bi Zeng +1 more·Jan 20, 2026
The formation of topological defects during continuous phase transitions exhibits nonequilibrium universality. While the Kibble-Zurek mechanism (KZM) predicts universal scaling of point-like defect numbers under slow driving, the statistical properti...
Topological Anderson insulator and reentrant topological transitions in a mosaic trimer lattice
Xiatao Wang, Li Wang, Shu Chen·Jan 20, 2026
We study the topological properties of a one-dimensional quasiperiodic-potential-modulated mosaic trimer lattice. To begin with, we first investigate the topological properties of the model in the clean limit free of quasiperiodic disorder based on a...
Recent progress on disorder-induced topological phases
Dan-Wei Zhang, Ling-Zhi Tang·Jan 20, 2026
Topological states of matter in disordered systems without translation symmetry have attracted great interest in recent years. These states with topological characters are not only robust against certain disorders, but also can be counterintuitively ...
Quantum Entanglement, Stratified Spaces, and Topological Matter: Towards an Entanglement-Sensitive Langlands Correspondence
Kazuki Ikeda, Steven Rayan·Jan 19, 2026
Recently, quantum entanglement has been presented as a cohomological obstruction to reconstructing a global quantum state from locally compatible information, where sheafification provides a functor that is forgetful with regards to global-from-local...
Two-Point Stabilizer Rényi Entropy: a Computable Magic Proxy of Interacting Fermions
Jun Qi Fang, Fo-Hong Wang, Xiao Yan Xu·Jan 19, 2026
Quantifying non-stabilizerness (``magic'') in interacting fermionic systems remains a formidable challenge, particularly for extracting high order correlations from quantum Monte Carlo simulations. In this Letter, we establish the two-point stabilize...
A Mixture of Experts Vision Transformer for High-Fidelity Surface Code Decoding
Hoang Viet Nguyen, Manh Hung Nguyen, Hoang Ta +2 more·Jan 18, 2026
Quantum error correction is a key ingredient for large scale quantum computation, protecting logical information from physical noise by encoding it into many physical qubits. Topological stabilizer codes are particularly appealing due to their geomet...
Topological quantum color code model on infinite lattice
Shiyu Cao, Zhian Jia, Sheng Tan·Jan 18, 2026
The color code model is a crucial instance of a Calderbank--Shor--Steane (CSS)-type topological quantum error-correcting code, which notably supports transversal implementation of the full Clifford group. Its robustness against local noise is rooted ...
Inverse Quantum Simulation for Quantum Material Design
Christian Kokail, Pavel E. Dolgirev, Rick van Bijnen +3 more·Jan 18, 2026
Quantum simulation provides a powerful route for exploring many-body phenomena beyond the capabilities of classical computation. Existing approaches typically proceed in the forward direction: a model Hamiltonian is specified, implemented on a progra...
Non-Trivial Topological Majorana Architectures: Mobius and Trefoil Band Topologies evaluated by Signal to Noise Ratio and Coherence time mesuarements
Spandan Das, Ennis Mawas·Jan 17, 2026
Topological quantum computing is expected to be less sensitive to noise because information is stored in global states rather than local features. To examine whether different device topologies show measurable differences, we study three geometries w...