Papers
Solving Nonlinear Partial Differential Equations via a Hybrid Newton Method Using Quantum Linear System Solver
Maximilian Mandelt Buxadé, Stefan Langer, Philipp Bekemeyer·Mar 24, 2026
To approximate solutions of complex nonlinear partial differential equations remains a computational challenge, especially for sets of equations relevant in industry, such as Euler or Navier-Stokes equations. Even the most sophisticated computational...
Modeling the Disjunction Effect within Classical Probability: A New Decision Process Model and Comparison with Quantum-like Models
Ryo Nasu, Yoshihiro Maruyama·Mar 24, 2026
The disjunction effect in human decision making is often taken to show that the classical law of total probability is violated, motivating quantum-like models. We re-examine this claim for the Prisoner's Dilemma disjunction effect. Under the mental-e...
Dynamical Evolution of Quantum Correlations and Decoherence in Coupled Oscillators Interacting with a Thermal Reservoir
Somayeh Mehrabankar, Farkhondeh Abbasnezhad, Davood Afshar +1 more·Mar 24, 2026
We investigate the dynamical evolution of quantum discord, entanglement and purity in an open quantum system of two coupled asymmetric harmonic oscillators interacting with a thermal environment. Using the Kossakowski-Lindblad master equation we anal...
Imprecise quantum steering inequalities in tripartite systems
Yan Zhao, Li-Juan Li, Zheng-Peng Xu +2 more·Mar 24, 2026
Quantum steering, as a manifestation of nonlocal quantum correlations, plays a crucial role in enabling various quantum information processing tasks. However, practical implementations are often hindered by significant challenges arising from imperfe...
RC-HEOM Hybrid Method for Non-Perturbative Open System Dynamics
Po-Rong Lai, Jhen-Dong Lin, Yi-Te Huang +3 more·Mar 24, 2026
The Hierarchical equations of motion (HEOM) method is an important non-perturbative technique, allowing numerically exact treatment of open quantum systems with strong coupling and non-Markovian memory. However, its encoding of bath memory into auxil...
Deterministic quantum master equation for non-Markovian signal processing
Guilherme de Sousa, Diogo O. Soares-Pinto·Mar 24, 2026
In this work, we derive a deterministic master equation to model a general, possibly non-Markovian, feedback. The master equation describes a system with a general evolution and measurement operation, with feedback being applied in terms of signal pr...
Effect of the Atomic Dipole-Dipole Interaction on the Phase Diagrams of Field-Matter Interactions
S. Cordero, E. Nahmad-Achar, O. Castaños +1 more·Mar 24, 2026
Quantum information measures are used to study the quantum phase diagrams of the two-level Dicke model including the atomic dipole-dipole interaction, for a finite number of particles, with and without the rotating-wave approximation, which yields th...
Pseudospectral phenomena and the origin of the non-Hermitian skin effect
J. Sirker·Mar 23, 2026
The non-Hermitian skin effect (NHSE), characterized by a macroscopic accumulation of eigenstates at the edge of a system with open boundaries, is often ascribed to a non-trivial point-gap topology of the Bloch Hamiltonian. We revisit this connection ...
Distance-Finding Algorithms for Quantum Codes and Circuits
Mark Webster, Abraham Jacob, Oscar Higgott·Mar 23, 2026
The distance of a classical or quantum code is a key figure of merit which reflects its capacity to detect errors. Quantum LDPC code families have considerable promise in reducing the overhead required for fault-tolerant quantum computation, but calc...
Predictive supremacy of informationally-restricted quantum perceptron
Shubhayan Sarkar·Mar 23, 2026
In the current world, the use of artificial intelligence is penetrating every aspect of human life. The basic element of any artificial intelligence is a digital neuron, called a perceptron, while its quantum analogue is called a quantum perceptron. ...
Probing the Spacetime Structure of Entanglement in Monitored Quantum Circuits with Graph Neural Networks
Javad Vahedi, Stefan Kettemann·Mar 23, 2026
Global entanglement in quantum many-body systems is inherently nonlocal, raising the question of whether it can be inferred from local observations. We investigate this problem in monitored quantum circuits, where projective measurements generate cla...
Post-selective attack with multi-mode projection onto Fock subspace
Andrei Gaidash, George Miroshnichenko, Anton Kozubov·Mar 23, 2026
In this work we present a comprehensive analysis of a post-selective attack on quantum key distribution protocols employing phase-encoded linearly independent coherent states (or similar alternatives). The attack relies on multimode projection onto a...
Gate-based Readout and Cooling of Neutral Atoms
Richard Bing-Shiun Tsai, Lewis R. B. Picard, Xiangkai Sun +3 more·Mar 23, 2026
Neutral atom arrays have seen tremendous progress in quantum simulation, quantum metrology, and fault-tolerant quantum computing. However, hardware constraints such as atom loss and heating remain significant challenges. In this work, we introduce a ...
Systematic construction of digital autonomous quantum error correction for state preparation and error suppression via conditional Gaussian operations
Keitaro Anai, Suguru Endo, Shuntaro Takeda +1 more·Mar 23, 2026
In continuous-variable quantum computing, autonomous quantum error correction (QEC) can dissipatively steer a noisy quantum state into a target state or manifold, enabling robust quantum information processing without explicit syndrome measurements a...
Single-Trajectory Gibbs Sampling for Non-Commuting Observables
Hongrui Chen, Jiaqing Jiang, Bowen Li +1 more·Mar 23, 2026
Estimating thermal expectation values of quantum many-body systems is a central challenge in physics, chemistry, and materials science. Standard quantum Gibbs sampling protocols address this task by preparing the Gibbs state from scratch after every ...
Experimental Quantum State Tomography of Multimode Gaussian States
Chan Roh, Geunhee Gwak, Young-Do Yoon +1 more·Mar 22, 2026
Multimode Gaussian states are a versatile resource for quantum information technologies and have been realized across a wide range of physical platforms. Recent progress in the large-scale generation of such states provides a key ingredient for scala...
Memory-Nonlinearity Trade-off across Quantum Reservoir Computing Frameworks
Saud Čindrak, Lara Giebeler, Niclas Götting +2 more·Mar 22, 2026
Quantum reservoir computing (QRC) harnesses driven quantum dynamics for time-series processing, yet the mechanisms behind the differing performance levels across its many implementations remain unclear. We show that apparently unrelated approaches-in...
A Quantum Encoding of Traveling Salesperson Tours via Route Generation, Cost Phases, and a Valid-Permutation Oracle
Alexander Johannes Stasik, Franz Georg Fuchs·Mar 22, 2026
We present a compact quantum encoding of the Traveling Salesperson Problem (TSP) based on a time-register representation of tours. A candidate route is represented as a sequence of $n$ city labels over discrete time steps, with one fixed start city a...
Contextuality as a Left Adjoint: A Categorical Generation of Orthomodular Structure
Yukio-Pegio Gunji, Yoshihiko Ohzawa, Yuki Tokuyama +2 more·Mar 22, 2026
Contextuality is widely regarded as a hallmark of quantum information, yet its structural origin is often obscured by probabilistic or operational formulations. In this work, we show that non-distributive orthomodular structure need not be postulated...
Evidential Quantum Vertical Federated Learning
Hao Luo, Zhiyuan Zhai, Qianli Zhou +3 more·Mar 22, 2026
Quantum federated learning (QFL) has recently emerged as a promising paradigm for privacy-preserving collaborative learning, yet most existing studies focus on horizontal federated learning and ignore the vertical federated learning (VFL), where part...