Papers

Jiahao Cao, Rohan Joshi, Yizhuo Tian +2 more·Jan 22, 2026

At the heart of quark confinement and hadronization, the physics of flux strings has recently become a focal point in the field of quantum simulation of high-energy physics (HEP). Despite considerable progress, a detailed understanding of the behavio...

Tim Heib, David Edward Bruschi·Jan 22, 2026

We present a method for associating labeled directed graphs to finite-dimensional Lie algebras, thereby enabling rapid identification of key structural algebraic features. To formalize this approach, we introduce the concept of graph-admissible Lie a...

Samuel Slezak, Matteo Scandi, Álvaro M. Alhambra +2 more·Jan 22, 2026

Many physical phenomena, including thermalization in open quantum systems and quantum Gibbs sampling, are modeled by Lindbladians approximating a system weakly coupled to a bath. Understanding the convergence speed of these Lindbladians to their stea...

Tetsuro Abe, Shu Tanaka·Jan 22, 2026

In combinatorial optimization problems with degenerate ground states, fair sampling of degenerate solutions is essential. However, the quantum approximate optimization algorithm (QAOA) with a standard transverse-field mixer induces biases among degen...

Fabio Bagarello·Jan 22, 2026

We introduce a class of pseudo-bosonic Klein-Gordon fields in 1+1 dimensions and we discuss some of their properties. This work originates from non Hermitian quantum mechanics and deformed canonical commutation relations. We show that, within this cl...

Rishi Sundar, Thomas Elliott·Jan 22, 2026

Hidden Markov models (HMMs) are ubiquitous in time-series modelling, with applications ranging from chemical reaction modelling to speech recognition. These HMMs are often large, with high-dimensional memories. A recently-proposed application of quan...

Samuel Stein, Shuwen Kan, Chenxu Liu +6 more·Jan 22, 2026

Real-time decoding of quantum error correction (QEC) is essential for enabling fault-tolerant quantum computation. A practical decoder must operate with high accuracy at low latency, while remaining robust to spatial and temporal variations in hardwa...

Frank Ernesto Quintela Rodríguez·Jan 22, 2026

McDonald and Clerk [Phys.\ Rev.\ Research 5, 033107 (2023)] showed that for linear open quantum systems the Liouvillian spectrum is independent of the noise strength. We first make this noise-independence principle precise in continuous time for mult...

K. B. Hari Krishnan, Vishal Varma, T. S. Mahesh·Jan 22, 2026

Prime factorization on quantum processors is typically implemented either via circuit-based approaches such as Shor's algorithm or through Hamiltonian optimization methods based on adiabatic, annealing, or variational techniques. While Shor's algorit...

Byeong-Yoon Go, Geunhee Gwak, Young-Do Yoon +4 more·Jan 22, 2026

While quantum metrology enables measurement precision beyond classical limits, its performance is often susceptible to experimental imperfections. Most prior studies have focused on imperfections in quantum states and operations. Here, we investigate...

Aishwarya Majumdar, Yuan Liu·Jan 22, 2026

A relevant signal in the quantum domain may manifest as a displacement or a phase shift operator in the bosonic phase space. For a real parameter $β$ embedded in such a displacement operator, the task of determining if $β\in [β_{-th}, β_{+th}]$ for r...

Ju Gao, Fang Shen·Jan 22, 2026

We show that a propagating Dirac electron with intrinsic spin generically carries a real--space helical conserved current, even in the absence of orbital angular momentum. Using exact Dirac eigenstates in cylindrical confinement, we demonstrate that ...

Dong-Sheng Liu, Zi-Jie Chen, Ziyue Hua +8 more·Jan 22, 2026

Quantum metrology typically demands the preparation of exotic quantum probe states, such as entangled or squeezed states, to surpass classical limits. However, the need for carefully calibrated system parameters and finely optimized quantum controls ...

Alexander S. Mayorov, Ping Wang, Xiaokai Yue +16 more·Jan 22, 2026

Graphene enables precise carrier-density control via gating, making it an ideal platform for studying electronic interactions. However, sample inhomogeneities often limit access to the low-density regimes where these interactions dominate. Enhancing ...

Christopher Altman·Jan 22, 2026

We implement and benchmark on IBM Quantum hardware the circuit family proposed by Violaris for estimating operational inter-branch communication witnesses, defined as correlations in classical measurement records produced by compiled Wigner's-friend-...

Xiang Zhang, Chen Sun, Fuxiang Li·Jan 22, 2026

We propose a novel approach to engineer the quantum Mpemba effect (QME)-wherein an initial state farther from the steaty state relaxes faster than a closer one-by the Liouvillian skin effect (LSE) in open quantum systems. We show that, in the open qu...

Matheus V. Scherer, Lea F. Santos, Alexandre D. Ribeiro·Jan 22, 2026

We study a general bipartite quantum system consisting of a spin interacting with a bosonic field, with the initial state prepared as the product of a spin coherent state and a canonical coherent state. Our goal is to develop a semiclassical framewor...

Takuya Hatomura·Jan 22, 2026

Counterdiabatic driving realizes parameter displacement of an energy eigenstate of a given parametrized Hamiltonian using the adiabatic gauge potential. In this paper, we propose a universal method of digitized counterdiabatic driving, constructing t...

Kristen M. Parzuchowski, Eli Mueller, Bakhrom G. Oripov +13 more·Jan 22, 2026

Superconducting nanowire single-photon detectors (SNSPDs) combine high detection efficiency, low noise, and excellent timing resolution, making them a leading platform for photon-counting applications. However, despite decades of materials and fabric...

Romain Piron, Akihito Soeda·Jan 22, 2026

We present a non-perturbative, first-principles derivation of renormalization relations for waveguide-QED models, explicitly accounting for the infrared (IR) and ultraviolet (UV) cutoffs that are necessarily introduced in numerical simulations. By fo...