Q-PhotoNAS: Hybrid Quantum Neural Architecture Search Framework on Photonic DevicesPhotonic quantum computing is a promising platform for scalable quantum machine learning, but designing effective hybrid architectures remains challenging under hardware and optimization constraints.…Farah Elnakhal, Alberto Marchisio, Nouhaila Innan et al.·Jul 22, 2026SaveLearn
QLIF-CAST: Quantum Leaky-Integrate-and-Fire for Time-Series Weather ForecastingAccurate and efficient time-series forecasting remains a challenging problem for both classical and quantum neural architectures, particularly in multivariate environmental settings. This work adapts…Alberto Marchisio, Aayan Ebrahim, Nouhaila Innan et al.·Jul 22, 2026SaveLearn
Parity Supervision as a Driver of Generalization in Quantum Generative ModelingGenerative models learn probability distributions in order to produce new samples beyond a finite training set. Their usefulness therefore depends on assigning probability to valid but previously…Markus Baumann, Daniel Hein, Steffen Udluft et al.·Jul 22, 2026SaveLearn
Polynomial Resource Classification of Quantum Circuit Familes via Classical ShadowsWe compare four polynomial-resource measurement strategies, (I) Z-basis-only, (II) nearest-neighbor ZZ (NN), (III) multi-basis (Z, X, Y), and (IV) classical shadows, for classifying three…Andrew Maciejunes, Ross Gore, Sachin Shetty et al.·Jul 22, 2026SaveLearn
Demonstrating Record Fidelity for the Quantum Fourier TransformWe demonstrate the Parity Architecture on quantum hardware, using the quantum Fourier transform (QFT) as a benchmark. As a result, a record performance in both fidelity and qubit count is achieved…Philipp Aumann, Michael Fellner, David Alber et al.·Jul 22, 2026SaveLearn
Enhanced quantum illumination of a lossy target: A sequential interaction modelQuantum illumination (QI) exploits quantum correlations to detect weakly reflecting targets embedded in noisy environments with higher sensitivity than classical illumination (CI). We investigate the…Shilpi Srivastava, Shubhrangshu Dasgupta·Jul 22, 2026SaveLearn
Geometric structure of the relativistic quantum phase spaceThe quest to reconcile quantum mechanics with gravitational theory motivates the exploration of frameworks that treat quantum uncertainty and spacetime geometry under a unified approach. A promising…Philippe Manjakasoa Randriantsoa, Ravo Tokiniaina Ranaivoson, Raoelina Andriambololona et al.·Jul 22, 2026SaveLearn
Estimating the performance boundary of Gottesman-Kitaev-Preskill codes and number-phase codesBosonic quantum error-correcting codes encode logical information in a harmonic oscillator, with the Gottesman-Kitaev-Preskill (GKP) and number-phase (NP) codes representing two fundamentally…Kai-Xuan Wen, Dong-Long Hu, Shengyong Li et al.·Jul 22, 2026SaveLearn
Momentum Diffusion, Decoherence and Drag Force on a Magnetic NanoparticleIn this paper, we will provide a complete derivation of the decoherence rate for a magnetic nanoparticle in quantum superposition in the presence of the fluctuating electromagnetic field in a thermal…Agya Sewara Alam, Anupam Mazumdar·Jul 22, 2026SaveLearn
Precision limit under weak coupling with an ancillary qubitWe propose a measurement-based quantum metrology protocol in a composite model, where the probe system (a spin ensemble) is coupled to an ancillary two-level system (qubit) with a general Heisenberg…Peng Chen, Jun Jing·Jul 22, 2026SaveLearn
Nature is stingy: Universality of Scrooge ensembles in quantum many-body systemsRecent advances in quantum simulators allow direct experimental access to ensembles of pure states generated by measuring part of an isolated quantum many-body system. These projected ensembles…Wai-Keong Mok, Tobias Haug, Wen Wei Ho et al.·Jul 22, 2026SaveLearn
Diagonal Unitary Covariant SuperchannelsWe present a complete characterization of diagonal unitary covariant (DU-covariant) superchannels, i.e. higher-order transformations transforming quantum channels into themselves. Necessary and…Dariusz Chruściński, Vivek Pandey, Sohail·Jul 22, 2026SaveLearn
Agency under indefinite causality: operational eternalism in higher-order quantum theoryAfter two decades of research on indefinite causality, a conceptual lesson emerges: the tension between operational quantum theory and dynamical spacetime physics requires observers, or agents, to be…Alexei Grinbaum·Jul 22, 2026SaveLearn
Pulsed learning for quantum data re-uploading modelsWhile Quantum Machine Learning (QML) holds great potential, its practical realization on Noisy Intermediate-Scale Quantum (NISQ) hardware has been hindered by the limitations of variational quantum…Ignacio B. Acedo, Pablo Rodriguez-Grasa, Pablo Garcia-Azorin et al.·Jul 22, 2026SaveLearn
Medusa: Detecting and Removing Failures for Scalable Quantum ComputingQuantum circuits will experience failures that lead to computational errors. We introduce Medusa, an automated compilation method for lowering a circuit's failure rate. Medusa uses flags to…Karoliina Oksanen, Quan Hoang, Alexandru Paler·Jul 22, 2026SaveLearn
Continuous-variable photonic quantum extreme learning machines for fast collider-data selectionWe study continuous-variable photonic quantum extreme learning machines as fast, low-overhead front-ends for collider data processing. Data is encoded in photonic modes through quadrature…Benedikt Maier, Michael Spannowsky, Simon Williams·Jul 22, 2026SaveLearn
Nonlinear photonic architecture for fault-tolerant quantum computingWe propose a novel architecture for fault-tolerant quantum computing that incorporates strong single-photon nonlinearities into a photonic GHZ-measurement-based architecture. The nonlinearities…Maike Ostmann, Joshua Nunn, Alex E. Jones·Jul 22, 2026SaveLearn
Diagonalizing large-scale quantum many-body Hamiltonians using variational quantum circuit and tensor networkExact diagonalization (ED) provides complete access to many-body eigenenergies and eigenstates, yet its exponential cost confines it to small systems. We propose tensor network variational…Peng-Fei Zhou, Shuang Qiao, An-Chun Ji et al.·Jul 22, 2026SaveLearn
Hamiltonian Expressibility for Ansatz Selection in Variational Quantum AlgorithmsIn the context of Variational Quantum Algorithms (VQAs), selecting an appropriate ansatz is crucial for efficient problem-solving. Hamiltonian expressibility has been introduced as a metric to…Filippo Brozzi, Gloria Turati, Maurizio Ferrari Dacrema et al.·Jul 22, 2026SaveLearn
Observation of period doubling and higher multiplicities in a driven single-spin systemOne of the prime features of quantum systems strongly driven by external time-periodic fields is the subharmonic response with integer multiples of the drive period k\, Td due to long-lived…Dhruv Deshmukh, Raúl B. González, Roberto Sailer et al.·Jul 22, 2026SaveLearn
Is Lindblad for me?The Lindblad master equation is a foundational tool for modeling the dynamics of open quantum systems. As its use has extended far beyond its original domain, the boundaries of its validity have…Martino Stefanini, Aleksandra A. Ziolkowska, Dmitry Budker et al.·Jul 22, 2026SaveLearn
Probing the Dynamics of Two-Level System Defect Ensembles via Broadband Cryogenic Transient Dielectric SpectroscopyTwo-level system (TLS) defects in dielectrics are a major source of decoherence in superconducting circuits, yet their microscopic origin and distribution remain poorly understood. Existing…Qianxu Wang, Juan S. Salcedo-Gallo, Sara Magdalena Gómez et al.·Jul 22, 2026SaveLearn
Work and heat exchanged during sudden quenches of strongly coupled quantum systemsHow should one define thermodynamic quantities (internal energy, work, heat, etc.) for quantum systems coupled to their environments strongly? We examine three (classically equivalent) definitions of…Zohreh Davoudi, Christopher Jarzynski, Niklas Mueller et al.·Jul 22, 2026SaveLearn
Information geometry of bosonic Gaussian thermal statesBosonic Gaussian thermal states form a fundamental class of states in quantum information science. This paper explores the information geometry of these states, focusing on characterizing the…Zixin Huang, Mark M. Wilde·Jul 22, 2026SaveLearn
Coherence-generating power deviation: Fluctuations and input selectivity beyond average coherence generationCoherence-generating power (CGP) tells how much coherence a quantum process produces on average from incoherent inputs, but an average can hide where that coherence comes from. We introduce the…Kyoungho Cho, Jeongho Bang·Jul 21, 2026SaveLearn