QUBO-Based Optimization of Social Indicator Configurations for Working-Age Population GrowthThe decline of the working-age population is a major challenge for regional sustainability, particularly in ageing societies such as Japan. We present a methodological demonstration of a quadratic…Hayate Wada, Seiya Miyamoto, Tatsumasa Ogawa et al.·Jul 28, 2026SaveLearn
Quantum Transformer BSDE Solver via Multi-Layer Fully-Connected Variational Quantum CircuitsSolving high-dimensional parabolic partial differential equations (PDEs) is important in engineering, physics, and stochastic control. Deep BSDE methods reformulate semilinear PDEs as backward…Howard Su, Huan-Hsin Tseng, Chi-Sheng Chen et al.·Jul 28, 2026SaveLearn
QuantumFCS.jl: Efficient Full-Counting Statistics for Open Quantum SystemsFull-counting statistics (FCS) provides a systematic framework for characterising current fluctuations in quantum transport, quantum optics, and open quantum systems. We introduce QuantumFCSjl, an…Aaron Daniel, Marcelo Janovitch·Jul 28, 2026SaveLearn
Purcell-Engineered Hybrid Coupler for Leakage-Suppressed Robust CZ GatesWe propose a Purcell-engineered notch-filter hybrid coupler for superconducting controlled-Z (CZ) gates that combines coherent interaction engineering with leakage-selective dissipation. The…Hui Wang, Feng Bao, Yan-Jun Zhao et al.·Jul 28, 2026SaveLearn
Low loss superconducting resonators enabled by aluminum microstructural engineering and dielectric trimmingMaterial losses in superconducting circuits fundamentally limit qubit coherence times and resonator quality factors. Most research efforts focus on mitigating losses at circuit interfaces, including…Mahmoud Almansouri, Umar T. F. Alhuwaymel, Ibraheem AlYousef et al.·Jul 28, 2026SaveLearn
Constructing mode-resolved quantum optical models for emitters in photonic crystalsRecent advances are enabling quantum emitters to interact with photonic crystals, whose electromagnetic modes exhibit complex dispersion relations, spatial mode structure, and polarization textures.…Antonio Morales-Pérez, Iñaki García-Elcano, Chiara Devescovi et al.·Jul 28, 2026SaveLearn
Input-Aware Dynamic Backdoor Attack Against Quantum Neural NetworksQuantum Neural Networks (QNNs) are a promising framework for quantum machine learning on near-term quantum devices, but their security risks remain insufficiently understood. Studies have shown that…Junrui Zhang, Zemin Chen, Lusi Li et al.·Jul 28, 2026SaveLearn
Scaling Adaptive Non-Local Observable Quantum Super-Resolution via Matrix Product StatesThis work presents a matrix product state (MPS) simulation framework for adaptive non-local observable variational quantum circuits (ANO-VQCs) in image super-resolution (SR) beyond the practical…Shih-Lung Yu, Ming-Kang Ho, Tai-Yue Li et al.·Jul 28, 2026SaveLearn
The Geometry of Quantum Complexity in Open SystemsWe extend Nielsen's geometric approach for quantum complexity from closed to open quantum systems, whose dynamics is governed by Lindbladian evolution. In this framework, complexity is defined…Ezra Acalapati, Kausik Ghosh, Giuseppe Policastro·Jul 28, 2026SaveLearn
Nuclear Many-Body Systems as Benchmarks for Quantum ComputingWe present a framework for benchmarking quantum algorithms for nuclear many-body systems based on realistic nuclear Hamiltonians such as chiral effective field theory. To this end, we introduce a…Sota Yoshida, Alessandro Baroni, Takayuki Miyagi et al.·Jul 28, 2026SaveLearn
Computable fermionic non-Gaussianity from the covariance matrixFermionic non-Gaussianity, or fermionic magic, is a key resource underlying the computational complexity of fermionic quantum systems, yet tractable and operationally meaningful ways to quantify it…Poetri Sonya Tarabunga, Bernhard Jobst, Raúl Morral-Yepes et al.·Jul 28, 2026SaveLearn
Physical reduced states and continuum characters of the lattice Kramers-Wannier defectA non-invertible topological line fixes global defect data but does not select a reduced density matrix in a spatially twisted sector. For the Kramers-Wannier defect of the critical Ising chain, we…Yi Liang·Jul 28, 2026SaveLearn
Rapid Cavity-Based Mid-Circuit Measurement and Feedforward in a Neutral Atom ArrayMeasuring part of a quantum system in the midst of its evolution and acting on the result in real time is essential for numerous quantum information protocols. Neutral-atom arrays are a leading…Tsai-Chen Lee, Jacquelyn Ho, Yue-Hui Lu et al.·Jul 28, 2026SaveLearn
Topological Codes from Space Groups: A Route beyond Translation InvarianceTranslation invariance underlies all algebraic constructions of topological codes with geometrical locality. It has remained an open question whether codes that generically break this invariance can…Chong-Yuan Xu, Ze-Chuan Liu, Yong Xu·Jul 28, 2026SaveLearn
Optimal Ansatz-free Hamiltonian Learning In SituCharacterizing the features of a Hamiltonian that governs a quantum system serves as a fundamental subroutine of quantum device calibration, signal sensing, and error correction. Recent works have…Taiqi Zhou, Weiyuan Gong·Jul 28, 2026SaveLearn
Finite-Element Matrix Product States for Continuum Models in One DimensionWe present a matrix product state framework for simulating one-dimensional quantum many-body systems in the continuum using non-orthogonal single-particle basis sets. By mapping the physical problem…Akshay Shankar, Karel Van Acoleyen, Jutho Haegeman·Jul 28, 2026SaveLearn
Practical Quantum Advantage before Fault Tolerance via Quantum-Informed Machine LearningEarly quantum devices can deliver a practical advantage before fault tolerance. The role we identify is a statistical module within a classical scientific workflow: a compressed memory with a…Maida Wang, Xiao Xue, Minh Chung et al.·Jul 28, 2026SaveLearn
Feature Encoding in Quantum Machine Learning: A Survey and Practical GuidelinesThe encoding of classical data into quantum states constitutes the primary performance bottleneck in Quantum Machine Learning (qml) on Noisy Intermediate-Scale Quantum (nisq) devices. No existing…Vincenzo Sammartino·Jul 28, 2026SaveLearn
Symmetry-Induced Relaxation Comb and Strong Quantum Mpemba Effect in Long-Range XXZ Spin ChainsWe uncover a symmetry-filtered mechanism for anomalous dissipative relaxation in a long-range XXZ spin chain subject to local dephasing. At the isotropic point, the coherent Hamiltonian has global…Zijun Wei, Mingdi Xu, Yefeng Song et al.·Jul 28, 2026SaveLearn
Quantum game theory for 2 2 games: a mathematical frameworkWe develop a rigorous mathematical framework for quantum game theory applied to static 2x2 games, extending classical concepts to the quantum setting where players may employ arbitrary unitary…Gloria Ferraris, Veronica Umanità·Jul 28, 2026SaveLearn
Pre-Asymptotic Trainability in Photonic Variational Circuits under PostselectionBarren plateaus (BP) in variational quantum circuits are commonly attributed to strong mixing dynamics that cause gradient variance to vanish exponentially with system size. Passive photonic circuits…Yichen Xie, Cassandre Notton, Jean Senellart·Jul 28, 2026SaveLearn
Probing the robustness of various self-testing protocols for multipartite entangled statesDevice-independent certification of multipartite entangled states plays a central role in a wide range of practical applications, including quantum networks, conference key agreement, and verifiable…Priyaranjan K. Jha, Ritesh K. Singh, A. K. Pan·Jul 28, 2026SaveLearn
Qubit-efficient and gate-efficient encodings of graph partitioning problems for quantum optimizationWe introduce a qubit- and gate-efficient higher-order unconstrained binary optimization (HUBO) encoding for graph partitioning problems requiring label-count minimization. This widely applicable…Tristan Zaborniak, Prashanti Priya Angara, Vikram Khipple Mulligan et al.·Jul 28, 2026SaveLearn
Generating pairwise entanglement in periodically driven quantum spin chains with stochastic resettingWe show that stochastic resetting may lead to finite entanglement between individual, spatially separated spins (pairwise entanglement) in the steady state of the spin chains driven periodically with…Sinchan Ghosh, Manas Kulkarni, K. Sengupta et al.·Jul 28, 2026SaveLearn
Harmoniq: Efficient Data Augmentation on a Quantum Computer Inspired by Harmonic AnalysisQuantum machine learning has attracted significant interest in recent years. Most existing approaches, however, are variational in nature and require extensive parameter optimization subroutines.…Kristina Kirova, Monika Doerfler, Franz Luef et al.·Jul 28, 2026SaveLearn