Optimality of Gaussian Entanglement of FormationWe prove that the entanglement of formation of every two-mode Gaussian state coincides with its Gaussian restriction, solving a longstanding open problem in continuous variable quantum information…Gerardo Adesso·Aug 3, 2026SaveLearn
Reinforcement-Learned Electric-Field Sensing with Asymmetrically Blockaded Rydberg ArraysWe present a reinforcement learning-optimized Rydberg electrometer based on the asymmetric blockade effect and achieve high-sensitivity electric field sensing in Rydberg arrays. Microwave dressing…Shi-Qiang Qiao, Xue-Ke Song, Shi-Lei Su et al.·Aug 3, 2026SaveLearn
Validation and calibration of quantum hardware through the many-body quantum Mpemba effectWe introduce a validation process that harnesses engineered many-body relaxation to control and calibrate quantum hardware. On two independently developed neutral-atom processors, we realize the…Francesco Campaioli, Marco Avesani, Oren Raz et al.·Aug 3, 2026SaveLearn
The Sample Complexity of Fidelity Estimation to a Known Rank-r Reference State Is Θ(r2/2)We settle the sample complexity of estimating the root Uhlmann fidelity F(ρ,σ)=trσρσ between an unknown state ρ and a known rank-r reference state σ. Writing…Gye Jin Lee, Sunghyeon Jo·Aug 3, 2026SaveLearn
Noise-robust discrimination of incoherent point sources with spatial-mode demultiplexingWe theoretically predict and experimentally demonstrate that a reduced spatial-mode demultiplexing (SPADE) measurement using only the two lowest-order Hermite-Gaussian modes exhibits remarkable…Jian-Qiang Liu, Chao-Ning Hu, Jun Xin et al.·Aug 3, 2026SaveLearn
Robust Nonclassical magnon pair generation and Cauchy-Schwarz inequality violation in a hybrid electromagnonic systemMagnonic systems are a promising resource for quantum technologies because of their ability to couple significantly disparate quantum platforms and the generation of nonclassical magnon states…Sabur A Barbhuiya, Ajeet Kumar, Amarendra K Sarma·Aug 3, 2026SaveLearn
Ring Optimized M-APSK Modulation for Discrete Modulated CV-QKDThis paper proposes a multi ring M-APSK constellation optimization method for discrete-modulated continuous variable quantum key distribution. Unlike conventional APSK structures with fixed ring…Seonguk Kim, Jun Heo·Aug 3, 2026SaveLearn
Near-optimal quantum metrology with few-qubit measurementsQuantum metrology, which addresses parameter estimation in quantum systems, has broad applications across science and technology. Conventional metrology protocols for multi-qubit states in the…Liang Mao, Senrui Chen, Hsin-Yuan Huang et al.·Aug 3, 2026SaveLearn
Limits of heralded photonic Bell-state generation in the presence of lossHigh-quality entangled states of photons underlie quantum information science (QIS) applications across communication, sensing, and computing. In many discrete-variable photonic QIS architectures,…Kevin J. Randles, Manuel H. Muñoz-Arias, Mohan Sarovar·Aug 3, 2026SaveLearn
Comparison of Spatial Entanglement between dissociated atom and ion : molecular ion photo-dissociated by sequential two-photon absorption and correlated two-photon absorptionWe have studied the fidelity of spatial entanglement between dissociated atom and ion from two photon dissociation of hydrogen molecular ion H 2 + . Two processes for two photon dissociation of…Krishna Rai Dastidar·Aug 3, 2026SaveLearn
Erasure surface code circuit without mid-circuit erasure checksQuantum error correction (QEC) codes can correct twice as many erasure errors as Pauli errors. Because of this scaling advantage, there is significant interest in developing qubits whose dominant…Margaret Pavlovich, Ivan Rojkov, Chen Wang et al.·Aug 3, 2026SaveLearn
Co-transmission of classical data and continuous-variable entanglement over a single quantum channelDisplacement-based simultaneous quantum-classical communications (SQCC) protocols, as originally proposed, are generally incompatible with the majority of useful quantum communication schemes, such…Nicholas Zaunders, Timothy C. Ralph·Aug 3, 2026SaveLearn
The Physics of Unresolved Uncertainty: Quantum Mechanics as a Theory of PotentialityWe propose a reformulation of quantum mechanics as a theory of unresolved uncertainty. This theory of potentiality is formulated in the language of complex-valued measure theory, regarded as a…Lionel Martellini·Aug 3, 2026SaveLearn
An Operational Resolution of the Third-Particle ParadoxWe give an operational resolution of the third-particle paradox, relevant in the theory of quantum reference frames. The apparent paradox is that a system which is irrelevant in one…Časlav Brukner, Esteban Castro-Ruiz, Marius Krumm·Aug 3, 2026SaveLearn
Quantum Key Distribution Beyond Stationary ChannelsQuantum key distribution (QKD) over non-stationary channels, such as satellite links, is characterized by short, high-loss, and strongly fluctuating transmission windows that produce sparse detection…Vaisakh Mannalath, Víctor Zapatero, Kiyoshi Tamaki et al.·Aug 3, 2026SaveLearn
Transducer leakage error suppression using invariant-based shortcutWe present a method for suppressing transducer leakage errors in spin-superconducting hybrid quantum systems with the theory of optimal invariant-based shortcut. By mediated virtual photons as a…Shi-Qiang Qiao, Zheng Shan, Xue-Ke Song et al.·Aug 3, 2026SaveLearn
The Infinitesimal Structure of Quantum InformationThis paper establishes a rigorous, unified geometric framework for quantum state spaces by constructing smooth, regular embeddings into higher-order dual number algebras $QN …Luca Barbieri-Viale·Aug 3, 2026SaveLearn
Benchmarking Error Mitigation: Artefactual Improvements in Zero-Noise ExtrapolationReliable benchmarking of Quantum Error Mitigation (QEM) requires distinguishing genuine improvements from artefacts of the post-processing arithmetic. In this paper, we expose a failure mode in…Dominik Köster, Wolfgang Mauerer·Aug 3, 2026SaveLearn
Constraint-Preserving QAOA for Personnel Rostering: Coverage-Preserving and Guarded-XY Mixer ConstructionsThe Quantum Approximate Optimization Algorithm (QAOA) is a promising framework for combinatorial optimization, but constrained problems are commonly handled using energetic penalty terms that require…Aruna Gupta, S R Hassan·Aug 3, 2026SaveLearn
Works on My QPU: Reproducibility in Quantum Computing ResearchQuantum computing research increasingly depends on complex software stacks, yet the reproducibility of published results does not receive the priority and longevity mandated by recommendations of…Dominik Köster, Maja Franz, Benjamin Zec et al.·Aug 3, 2026SaveLearn
Optically Active Single Hole Spin in ZnSeSemiconductor hole spins offer a pathway to extended coherence times by decoupling from nuclear magnetic noise, while their spin-orbit coupling enables fast all-electrical control. In ZnSe, however,…Amirehsan Alizadehherfati, Yuxi Jiang, Kelsey J. Mirrielees et al.·Aug 3, 2026SaveLearn
Noise-Directed Adaptive Remapping for Integer Optimization: from qubits to (encoded) quditsWe extend Noise-Directed Adaptive Remapping (NDAR), a recently proposed heuristic meta-algorithm that leverages device noise as a computational resource, to optimization problems over discrete…Stuart Hadfield, Filip B. Maciejewski, Davide Venturelli·Aug 3, 2026SaveLearn
A Non-Hermitian Relativistic Oscillator Exactly Mapped to a Hermitian Schrodinger ProblemWe introduce the Dirac Inverted Oscillator, a new exactly solvable relativistic quantum system obtained through a Hermitian modification of the generalized momentum operator in the Dirac equation. In…Mustapha Maamache·Aug 3, 2026SaveLearn
Magic Secret Sharing: Threshold Control of Quantum Computational Power via GHZ EntanglementWe introduce Magic Secret Sharing (MSS), a quantum cryptographic primitive in which the secret is the computational capability of a quantum state rather than its classical description. In the…Soumyojyoti Dutta, Tushar·Aug 3, 2026SaveLearn
Information Thermodynamics in Generalized Probabilistic TheoriesGeneralized probabilistic theories (GPTs) provide a unified framework for describing probabilistic physical theories, encompassing classical and quantum theories as well as hypothetical theories…Koki Ono, Shun Umekawa, Hiroyasu Tajima·Aug 3, 2026SaveLearn