Biased-noise qubits: a guide to efficient fault-tolerance using the hierarchy of errorsQubits with strongly biased noise, in which phase-flip errors are orders of magnitude more frequent than bit-flips, arise both naturally, as in electron and nuclear spins, and by engineering, as in…Diego Ruiz, Jérémie Guillaud, Christophe Vuillot et al.·Jul 22, 2026SaveLearn
Schrödinger's real-valued equation revisitedThe Schrödinger equation can be rewritten as a second-order equation for a single real-valued scalar field. Taken at face value, however, this one-field reduction obscures several local structures of…Oliver Passon, Bernd Rosenow·Jul 22, 2026SaveLearn
PN-QNN: Harnessing Physical Noise as a Native Regularizer in Photonic Hybrid Quantum Neural NetworksPhysical noise in near-term quantum hardware is usually treated as a nuisance to suppress. We ask whether it can instead act as a hardware-native regularizer for photonic hybrid quantum-classical…Farah Elnakhal, Alberto Marchisio, Nouhaila Innan et al.·Jul 22, 2026SaveLearn
Slack-Free Deep-Unfolded Combinatorial Optimization Solver for Inequality ConstraintsQuantum annealing (QA) is used to solve combinatorial optimization problems (COPs). When COPs are implemented on quantum annealers, they are typically encoded as quadratic unconstrained binary…Ryo Hagiwara, Shunta Arai, Satoshi Takabe·Jul 22, 2026SaveLearn
Construction of a Class of Communication-Efficient Quantum Secret Sharing SchemesQuantum secret sharing is a fundamental technique in quantum cryptography. However, in practical quantum networks, it still faces several bottlenecks, such as high quantum communication cost and low…Chenhao Li, Zhihui Li, Jiansheng Guo et al.·Jul 22, 2026SaveLearn
Propagation dynamics of high-gain vortex beams in symmetry-broken media via forward and backward three-wave mixingIn recent years, vortex light, a distinctive form of structured light, has attracted considerable attention owing to its unique properties and the rich physical phenomena arising from its interaction…Fan Meng, Hao Zhu, Xin-Yao Huang et al.·Jul 22, 2026SaveLearn
Nonreciprocal phonon blockade in spin quadratic optomechanical systemsWe propose a scheme for achieving nonreciprocal phonon blockade in a quadratic optomechanical (QOM) system consisting of two spinning resonators near-field coupled to a nanomechanical oscillator. Due…Yao Dong, Guo-Feng Zhang·Jul 22, 2026SaveLearn
A reduction scheme for general-order Ising-like Hamiltonians in quantum heuristic solversThe Ising model is ubiquitous in various optimization problems but notoriously difficult to solve due to combinatorial explosion. In view of this, Hamiltonian reduction is a useful preprocessing…Chengsi Mao, Pavel Mosharev, Yao Wang et al.·Jul 22, 2026SaveLearn
Emergent boundary-memory from unitarity constraints in a minimal two interacting quantum particlesWe construct a simple model of two particles mutually attracting/repulsing in a one-dimensional lattice and investigate the corresponding dynamics. We show that enforcing reversible unitary evolution…Ibrahim Yahaya Muhammad, Tanapat Deesuwan, Monsit Tanasittikosol·Jul 22, 2026SaveLearn
A Multi-Resolvent Hierarchy for the ETH Smooth FunctionThe eigenstate thermalization hypothesis (ETH) parametrizes off-diagonal matrix elements by a smooth function whose microscopic origin remains largely phenomenological. We develop a multi-resolvent…Zhiqiang Huang·Jul 22, 2026SaveLearn
Generation of vortex-squeezed light in a coherently prepared mediumIn this Letter, we theoretically propose an alternative scheme for generating vortex optical squeezing, based on the Raman scattering process in a coherently prepared medium, distinct from approaches…Fan Meng, Hao Zhu, Xin-Yao Huang et al.·Jul 22, 2026SaveLearn
Optimal Lower Bounds for Hamiltonian SimulationFor Hamiltonian H = Σj hj, we prove asymptotically tight lower bounds on the gate and query complexities of simulating time evolution on a quantum computer. Our bounds hold for arbitrary term…Alexander Zlokapa, Richard R. Allen, Aram W. Harrow·Jul 22, 2026SaveLearn
Distributed Entanglement Distribution Using Multiple Entanglement Sources in WDM-based Quantum Optical NetworksQuantum network implementations using single spontaneous parametric downconversion (SPDC)-based broadband entangled photon pair source (EPPS) have been reported recently. Here, leveraging the…Anuj Agrawal, Abhay Singh Dulta, Bhaskar Kanseri·Jul 22, 2026SaveLearn
A Multiclass Quantum Aligned Centroid KernelKernel methods are powerful tools in machine learning but commonly used full-Gram kernels face three key limitations: (1) quadratic scaling with training set size; (2) the use of fixed, non-trainable…Kilian Tscharke, Pascal Debus·Jul 22, 2026SaveLearn
Latency-Constrained Encoded Quantum Teleportation with Punctured CodesQuantum teleportation is a key protocol for transmitting quantum information using entanglement and classical communication. Its reliability is constrained by both the availability and fidelity of…Mahmoud Saad Abouamer, Jakob Kaltoft Søndergaard, Petar Popovski·Jul 22, 2026SaveLearn
The Quantum Adiabatic Theorem for Non-Hermitian DynamicsWe establish a quantitative adiabatic estimate for a class of finite-dimensional non-Hermitian Schrödinger dynamics. The original non-Hermitian Hamiltonian is assumed to be diagonalizable with real…G. M. V. S. Aponso, B. P. W. Fernando, K. K. W. A. S. Kumara et al.·Jul 22, 2026SaveLearn
Robust logical Bell nonlocality based on quantum error correction codesQuantum nonlocality based on the violation of Bell-like inequalities constitutes a fundamental feature of quantum physics and drives the development of device-independent (DI) quantum information…Qi Zhang, Jia-Wei Ying, Cheng Liu et al.·Jul 22, 2026SaveLearn
Structured-light-mediated hybrid entanglement between photon polarization and electronic orbital angular momentumWe propose a minimal quantum-optical scheme for generating hybrid entanglement between photon polarization and electronic orbital angular momentum in a semiconductor quantum disk. A spin--orbit…Hiroaki Saito, Nobuhiko Yokoshi·Jul 22, 2026SaveLearn
Exact Closed-Form Quantum Correlations of Maximally Entangled Qudit States under Arbitrary Non-Markovian Pure DephasingWe study the time evolution of entanglement and quantum discord for a pair of maximally entangled qudits of arbitrary dimension d under non-Markovian pure dephasing, using the exact solution of the…Ahmad Akhound·Jul 22, 2026SaveLearn
Enhanced Neural Quantum State via Annealed Gradient DescentNeural quantum states offer expressive representations of quantum many-body wave functions, yet their practical accuracy can be limited by stochastic optimization rather than representational…Shiwei Zhou, Yiming Huang, Xiao Yuan et al.·Jul 22, 2026SaveLearn
Identity-Paired Progressive Depth Training: When Trainability Persists Beyond ExpressibilityVariational Quantum Algorithms (VQAs) are a leading paradigm for near-term quantum computing, yet their training suffers from sensitivity to circuit depth, initialization, and landscape pathologies…Athanasios Hadjidimoulas, Tirthak Patel, Anastasios Kyrillidis·Jul 22, 2026SaveLearn
Efficient Exact Quantum Sampling from the Sun-Wootters Distribution for Optimal Polynomial IntersectionOptimal Polynomial Intersection (OPI) is a structured optimization problem for which Decoded Quantum Interferometry (DQI) attains a satisfaction guarantee governed by the semicircle law. Sun and…Sunghyeon Jo·Jul 22, 2026SaveLearn
Remote Infrared Absorption Spectroscopy with Undetected PhotonsWe demonstrate a novel method for remote open-path Fourier-transform infrared spectroscopy with undetected photons. Similar to previous quantum spectroscopy works, a mid-infrared spectrum is…Simon Neves, Fériel Armbruster, Jean-Pierre Wolf·Jul 22, 2026SaveLearn
SQD-Enabled Circuit Compression for Resource-Efficient Quantum ChemistrySample-based Quantum Diagonalization (SQD) recovers ground-state energies by classically diagonalizing a Hamiltonian in the subspace spanned by quantum samples, requiring only bitstrings with…Kangyu Zheng, Yidong Zhou, Jinglei Cheng et al.·Jul 22, 2026SaveLearn
Towards logical entanglement creation in trivalent planar architecturesLow-overhead quantum error-correction schemes are essential for enabling quantum computation on registers containing multiple logical qubits. For planar architectures with limited nearest-neighbor…Lukas Bödeker, Luis Colmenarez, Sergey Blinov et al.·Jul 22, 2026SaveLearn