Interference Engineering for Quantum Imaginary-Time Evolution through Multiple Energy ShiftsEnergy shifting is usually trivial in imaginary-time evolution because it changes only the normalization of the evolved state. On a quantum computer, however, imaginary-time evolution can be…Hong-Jian Tang, Dan-Bo Zhang·Aug 18, 2026SaveLearn
On the Expressive Power of the Transverse-Field Ising Model for Graph LearningWe study the quantum evolution induced by graph-indexed Ising Hamiltonians as a source of structural signal for graph learning. Graph automorphisms preserve symmetries of the Hamiltonian, and these…Mehdi Djellabi, Louis-Paul Henry·Aug 18, 2026SaveLearn
Universal quantum theory from dynamical consistencyWe argue for the universality of quantum theory using a dynamical consistency argument, within a specific Hamiltonian setting. We analyse two different types of coupling between simple quantum…Chiara Marletto, Vlatko Vedral·Aug 18, 2026SaveLearn
Single-atom detection with a quantum-controlled mechanical oscillatorUsing supersonic expansion, we create a time-gated, directional beam of Xe atoms with a narrow momentum distribution and detect their collisions with a levitated nanosphere cooled to its quantum…Maxime Perdriat, Maciej Dziewiecki, Josef-Anton Agner et al.·Aug 18, 2026SaveLearn
Quantum simulation of slow analytic time-dependent HamiltoniansWe develop a quantum algorithm for slow analytic Hamiltonians H(t)=H(t/T) with \|H(s)\|≤α that achieves nearly additive query complexity and low gate overhead. Our main technical…Chenhao Zhao, Yinan Li, Dong An·Aug 18, 2026SaveLearn
Unclonable encryption from BB84 states: a simultaneous Goldreich-Levin reductionGoldreich-Levin reductions are ubiquitous in cryptography: they convert an algorithm capable of guessing r, m (mod 2) for a hidden string m and a random challenge r, to one…Andrea Coladangelo, Qipeng Liu, Ziyi Xie·Aug 18, 2026SaveLearn
Irradiation-Induced Spin Bath Evolution and as-Grown Hydrogen Defects in CVD Diamond Revealed by NV-Based DEER SpectroscopyThe aim of this paper is to provide the reader with a review and current state of the art of the fabrication of high T2 coherence diamond, optimised by the use of double electron-electron resonance…Olga Rubinas, Jeroen Prooth, Michael Petrov et al.·Aug 18, 2026SaveLearn
Towards the Impossibility of Imperfectly Complete Key Agreement in the QROMWe make progress towards the impossibility of imperfectly complete quantum-computation, classical-communication (QCCC) key agreement by constructing the first unconditional attacks on quantum key…Fuyuki Kitagawa, Ryo Nishimaki, Agi Villanyi et al.·Aug 18, 2026SaveLearn
Operational thresholds of Bell mixtures with complex X noiseNoisy Bell mixtures may carry entanglement, standard teleportation usefulness, projective-measurement steerability, and optimized Cavalcanti-Jones-Wiseman-Reid (CJWR) and Clauser-Horne-Shimony-Holt…Xuan Du Trinh·Aug 18, 2026SaveLearn
Automating Variational Quantum Sensing through Reinforcement-Learned Circuit StructuresVariational quantum sensing offers a promising route to high-precision parameter estimation, but its performance depends strongly on the circuit architectures used for probe preparation and…Jie Liu, Xin Wang·Aug 18, 2026SaveLearn
No extension of the Quantum Tensor Product admits a Superposition principleTextbook quantum superposition refers to the feature that certain linear combinations of Hilbert space rays, each representing a valid quantum state, are themselves valid states. This notion is not…Vincenzo Fiorentino, Kuntal Sengupta·Aug 18, 2026SaveLearn
Enhanced quantum thermometry near a dissipative phase transition in a driven Kerr cavityWe investigate quantum thermometry in a driven--dissipative Kerr cavity coupled to a thermal reservoir. The system exhibits a finite-size precursor of a dissipative phase transition, characterized by…Chayan Purkait, Bimalendu Deb·Aug 18, 2026SaveLearn
Engineering of Dual Wavelength, Polarization Selective Metalenses in Silicon CarbideSpin defects in silicon carbide (SiC) are promising candidates for integrated quantum photonics, offering long-lived spin states and near-infrared emission suitable for low-loss photonic integration…Xiaoying Huang, Ziwei Yang, Konosuke Shimazaki et al.·Aug 18, 2026SaveLearn
Characterizing Entanglement in Combinations of Bell States through Superposition and Mixing: An Increase in Entanglement on Introducing Depolarizing, Phase Damping, and Amplitude Damping NoiseWe systematically characterize quantum entanglement in all sixteen combinations of two-qubit Bell states across three operational regimes: pure superposition, noiseless mixing, and asymmetric mixing…Nishant Chaudhari, Jean-François Van Huele·Aug 18, 2026SaveLearn
Noise Resilience of Quantum Support Vector Machine with Selected Feature MapsGate-level noise degrades the classification accuracy of Quantum Support Vector Machines (QSVMs) on Noisy Intermediate-Scale Quantum (NISQ) hardware, and the degree of degradation depends on how…Muhammad Ahsan Shakeel, Saad Muzammil, Danyal Tayyub et al.·Aug 18, 2026SaveLearn
Absorption-emission quantum repeater using diamond quantum memoriesQuantum repeaters are essential for overcoming the exponential photon loss that limits entanglement generation over long distances in quantum networks. An absorption-emission-based quantum repeater…Taichi Fujiwara, Yuhei Sekiguchi, Raustin Reyes et al.·Aug 18, 2026SaveLearn
Quantifying Measurement Objectivity: A Retrodictive ApproachWhen can one interpret the outcomes of a quantum measurement as revealing a pre-existing objective property? Using the recently developed formalism of quantum measurement retrodiction, we provide a…Jiaxi Kuang, Teruaki Nagasawa, Kensei Torii et al.·Aug 18, 2026SaveLearn
Quantum sensors that compute: quantum computational magnetic-field sensing using a superconducting qubitA measurement of a single-qubit quantum sensor reveals at most 1 bit of information about the signal that was sensed. To perform a classification task on the signal, the conventional approach is to…Purnendu Sen, Mathieu Ouellet, Saeed A. Khan et al.·Aug 18, 2026SaveLearn
Exact certification of a positive-order Rényi additivity violation for an explicit channel pairCubitt, Harrow, Leung, Montanaro, and Winter (CHLMW) exhibited an explicit pair of quantum channels whose minimum output Rényi entropy is nonadditive at order zero, and reported numerical violations…Artus Krohn-Grimberghe·Aug 18, 2026SaveLearn
Beyond Legal Spacing: A Residual-Aware Characterization of Entangling-Zone Spacing in Neutral-Atom CompilationNeutral-atom processors rely on spatially arranged qubit arrays and parallel Rydberg entangling gates for scalable execution. Their compilers enforce geometric spacing rules for simultaneous gates,…Xinyi Li, Yifeng Peng, Ying Wang·Aug 18, 2026SaveLearn
Reduced State Stabilizer Rényi Entropy as a Probe of Quantum Phase Transitions in Frustrated J1-J2 Spin ModelsWe investigate whether the second-order purity-corrected stabilizer Rényi entropy (SRE) of reduced two-qubit density matrices can serve as a reliable local indicator of quantum phase transitions…George Biswas, Santanu Sarkar, Jun-Yi Wu et al.·Aug 18, 2026SaveLearn
A Connectivity-Order Law and Conditional Minimal-Mechanism Identification in Many-Body Geometric PhasesThe value of a multiqubit geometric phase at a single operating point does not reveal whether it was generated directly or through a connected sequence of lower-body interactions. For analytic,…Kuo Hai, Junhao Huang, Qiong Chen et al.·Aug 18, 2026SaveLearn
Weak Typicality of von Neumann Entanglement Entropy in Gaussian Boson SamplingWe study the von Neumann entanglement entropy generated by a Haar distributed passive interferometer acting on n equally squeezed input modes with fixed nonzero squeezing strength s. Previous…Hongru Zhao·Aug 18, 2026SaveLearn
Low-Depth and Noise-Resilient Quantum State Preparation for Partial Differential Equations via Virtual RzPreparing smooth real-amplitude quantum states is a key subroutine in quantum solvers for dissipative PDEs, such as LCHS, where discretized positive weights must be encoded into amplitudes. Exact…Toru Fujii·Aug 18, 2026SaveLearn
Gaussian Optimality of Energy-Constrained One-Shot Communication through Single-Mode Bosonic Gaussian ChannelsWe prove Gaussian optimality for the energy-constrained one-shot Holevo capacity of single-mode bosonic Gaussian channels, including phase-sensitive channels with arbitrarily squeezed thermal noise.…Se-Wan Ji·Aug 18, 2026SaveLearn