Papers
Geometric Foundations of Stochastic and Quantum Dynamics
David V. Svintradze·Mar 30, 2026
We develop a geometric formulation of stochastic dynamics in which noise, diffusion, path probabilities, fluctuation theorems, and entropy production arise from the intrinsic geometry of an evolving manifold rather than from externally imposed random...
Nonunitary Preparation of Nontrivial States from Trivial Regimes in Two-Dimensional Topological Insulators
Qin-Qin Wang, Xiao-Ye Xu, Chuan-Feng Li +1 more·Mar 27, 2026
While remarkable progress has been achieved in engineering nontrivial Hamiltonians across a wide range of physical platforms, preparing their corresponding nontrivial ground states remains a major experimental challenge. The commonly used strategy fo...
Hyperbolic Cluster States for Fault-Tolerant Measurement-Based Quantum Computing
Ahmed Adel Mahmoud, Gabrielle Tournaire, Sven Bachmann +1 more·Mar 27, 2026
Fault-tolerant measurement-based quantum computing (MBQC) provides a compelling framework for fault-tolerant quantum computation, in which quantum information is processed through single-qubit measurements on a three-dimensional entangled resource kn...
Generating function for Hermitian and non-Hermitian models
Hua-Yu Bai, Yang Chen, Guang-Can Guo +2 more·Mar 27, 2026
It is well known that Hermitian and non-Hermitian models exhibit distinct physics and require different theoretical tools. In this work, we propose a unified generating-function framework for both classes with generic boundary conditions and local im...
Majorana-XYZ subsystem code
Tobias Busse, Lauri Toikka·Mar 27, 2026
We present a new type of a quantum error correction code, termed Majorana-XYZ code, where the logical quantum information scales macroscopically yet is protected by topologically non-trivial degrees of freedom. It is a $[n,k,g,d]$ subsystem code with...
Geometric Phase Effect in Thermodynamic Properties and in the Imaginary-Time Multi-Electronic-State Path Integral Formulation
Yu Zhai, Youhao Shang, Jian Liu·Mar 27, 2026
The geometric phase (GP) is a fundamental quantum effect arising from conical intersections (CIs), with profound consequences for vibronic energy levels. Standard imaginary-time path integral molecular dynamics (PIMD) based on the Born-Oppenheimer ap...
Scalable topological quantum computing based on Sine-Cosine chain models
A. Lykholat, G. F. Moreira, I. R. Martins +3 more·Mar 26, 2026
This work proposes a scalable framework for topological quantum computing using Matryoshka-type Sine-Cosine chains. These chains support high-dimensional qudit encoding within single systems, reducing the physical resource overhead compared to conven...
Typical entanglement in anyon chains: Page curves beyond Lie group symmetries
Yale Yauk, Lucas Hackl, Alexander Hahn·Mar 26, 2026
We study bipartite entanglement statistics in one-dimensional anyon chains, whose Hilbert spaces are constrained by fusion rules of unitary pre-modular categories. Our setup generalizes previous frameworks on symmetry-resolved entanglement entropy fo...
Exceptional-point-constrained locking of boundary-sensitive topological transitions in non-Hermitian lattices
Huimin Wang, Yanxin Liu, Zhihao Xu +1 more·Mar 26, 2026
Point-gap topology under periodic boundary conditions and line-gap topology under open boundary conditions are generally inequivalent in non-Hermitian systems. We show that, in chiral non-Hermitian lattices, these two boundary-sensitive topological t...
Detecting Complex-Energy Braiding Topology in a Dissipative Atomic Simulator with Transformer-Based Geometric Tomography
Yang Yue, Nan Li, Xin Zhang +8 more·Mar 26, 2026
Machine learning (ML) is shaping our exploration of topological matter, whose existence is inherently tied to the geometry of quantum states or energy spectra. In non-Hermitian systems, distinctive spectral geometry can lead to topological braiding o...
Causality is rare: some topological properties of causal quantum channels
Robin Simmons·Mar 26, 2026
Sorkin's impossible operations demonstrate that causality of a quantum channel in QFT is an additional constraint on quantum operations above and beyond the locality of the channel. What has not been shown in the literature so far is how much of a co...
Explicit States with Two-sided Long-Range Magic
Zhi Li·Mar 26, 2026
Nonstabilizerness, or magic, is a necessary resource for quantum advantage beyond the classically simulatable Clifford framework. Recent works have begun to chart the structure of magic in many-body states, introducing the concepts of long-range magi...
Second-order Skin Effect in a Brick-Wall Lattice
Dipendu Halder, Srijata Lahiri, Saurabh Basu·Mar 25, 2026
Non-Hermitian skin effect, which is a unique feature of non-Hermitian systems, exhibits the formation of an extensive number of boundary modes under open boundary conditions. However, its manifestation in higher dimensions remains elusive. In our wor...
Parameter trajectory engineering for state transfer and quantum sensing in non-Hermitian two-level systems
Qi-Cheng Wu, Yan-Hui Zhou, Biao-liang Ye +4 more·Mar 25, 2026
Exceptional points (EPs) in non-Hermitian systems give rise to enhanced sensitivity and chiral state transfer, which are important for quantum technologies. Although parameter trajectories encircling EPs can control symmetric and chiral state transfe...
Mixed-State Topological Phase: Quantized Topological Order Parameter and Lieb-Schultz-Mattis Theorem
Linhao Li, Yuan Yao·Mar 25, 2026
We investigate the extension of pure-state symmetry protected topological phases to mixed-state regime with a strong U(1) and a weak $\mathbb{Z}_2$ symmetries in one-dimensional spin systems by the concept of quantum channels. We propose a correspond...
Geometry-tunable magnetic edge contrast in Bi2Te3 Corbino nanoplates
Motahhare Mirhosseini, Swathi Kadaba, Allison Swyt +1 more·Mar 24, 2026
Two-dimensional topological insulators feature helical edge states that are remarkably resistant to disorder, making them appeal for energy-efficient electronics and quantum information technologies. In this study, we develop a Te-rod-templated solut...
Quantum simulation of Motzkin spin chain with Rydberg atoms
Kaustav Mukherjee, Hatem Barghathi, Adrian Del Maestro +1 more·Mar 24, 2026
Motzkin spin chain is a well-known mathematical model with connections to symmetry-protected topological phases, such as the Haldane phase, as well as to concepts in the AdS/CFT correspondence. They exhibit highly entangled ground states that violate...
Occupation-selective topological pumping from Floquet gauge fields
Wenjie Liu, Ching Hua Lee, Zhoutao Lei·Mar 24, 2026
Topological pumping is conventionally governed by single-particle band topology. Here we show that promoting tunneling to a dynamical, occupation-conditioned variable fundamentally reshapes this paradigm, leading to occupation-selective topological p...
Exploring Spectral Singularities in Dirac Semimetals: The Role of Non-Hermitian Physics and Dichroism
Mustafa Sarisaman, Murat Taş, Enes Talha Kırca·Mar 24, 2026
In this study, motivated by recent advancements in non-Hermitian physics, we explore new characteristics of Dirac semimetals (DSMs) using the spectral singularities by means of scattering techniques, with the goal of uncovering additional unique prop...
Non-Hermitian skin effect in periodic, random, and quasiperiodic systems
F. Iwase·Mar 24, 2026
The non-Hermitian skin effect (NHSE), which drives bulk states toward system boundaries, modifies bulk-boundary correspondence and complicates the identification of topological edge modes. Although breaking translational symmetry is known to influenc...