Magic Without Entanglement: Exact Revivals and Their Fisher Information OriginMagic and entanglement are independent quantum resources, yet their exact relation in many-body dynamics has remained elusive. We uncover two structural principles. First, at any stabilizer state,…Rishabh Jha, Karun Gadge·Jul 22, 2026SaveLearn
Deterministic single-electron trapping on solid neon using engineered dielectric surface geometryLevitating electron qubit on the surface of solid neon has recently emerged as a promising and intrinsically noise-resilient platform for quantum information processing. Their ultra-clean, inert…Kundan Surse, Eric Helgemo, Andrew Palmer et al.·Jul 22, 2026SaveLearn
Dynamics of two interacting dipolar two-level systems in a multi-mode electromagnetic cavity: sudden death and revival of the entanglement within the Born-Markov approximationInteracting dipolar two-level systems form a special class of qubits that interact with a cavity in a particular way. We first prove that the Markovian dynamics of one 1/2-spin in interaction with a…Loann Quien, Naomichi Hatano·Jul 22, 2026SaveLearn
Complete measurement of tunnel- and valley-coupling parameters in a silicon double quantum dotTunneling is essential in the initialization, measurement, and control of quantum dot qubits. In silicon, such tunneling connects not only the qubit states but also valley minima in the conduction…Daniel J. King, Minyoung Kim, J. Reily et al.·Jul 22, 2026SaveLearn
Distributed Monogamy of Entanglement limits Quantum Channel SimulationEntanglement is monogamous: if it is shared among more than two parties, the entanglement between any pair cannot be very strong. For an integer k≥ 2, k-extendibility of a state ρAB…Rabsan Galib Ahmed, Graeme Smith·Jul 22, 2026SaveLearn
Efficiency-Induced Freezing in Quantum-State PurificationAny nonzero detection loss qualitatively changes feedback-controlled purification under diffusive monitoring. In every finite dimension, we prove a sharp, dimension-independent ceiling on the decay…Jiaxin Liu, Zuoxian Wang, Feng Li et al.·Jul 22, 2026SaveLearn
Comparing and learning figures of merit for quantum circuit compilationTo make quantum algorithms executable on a particular quantum device, they need to be compiled into circuits that respect constraints of the quantum hardware. This compilation usually involves…Harshdeep Singh, Marvin Richter, Mats Granath et al.·Jul 22, 2026SaveLearn
Squeezing enhanced homodyne weak force sensing in cavity optomechanicsCavity optomechanical systems have emerged as a promising platform for quantum sensing. Quantum mechanics imposes a standard quantum limit (SQL) on the force-sensitivity for the standard homodyne…Madan Mohan Mahana, Sanket Das, Tarak Nath Dey·Jul 22, 2026SaveLearn
Non-adiabatic transitions in the density matrix formalismWe show that a density matrix formalism provides a useful description of non-adiabatic transitions in two-state quantum systems. Compared to a traditional Hamiltonian formalism, even in the absence…Pasquale Di Bari, Shreya Pandit, Ye-Ling Zhou·Jul 22, 2026SaveLearn
Where a Quantum Reservoir Works: A Transferable Operating BandIn quantum reservoir computing, a fixed quantum system transforms an input signal, while learning reduces to training a simple linear readout on its measured outputs. Since the quantum dynamics…Markus Baumann, Itamar Fink, Johannes Wittmann et al.·Jul 22, 2026SaveLearn
Autonomous oscillations in quantum electromechanics: tensor network treatmentTransport-induced self-sustained oscillations in electromechanical systems convert a static electrochemical bias into robust, autonomous oscillatory motion in the absence of any external periodic…Mahasweta Pandit, Sheikh Parvez Mandal, Mark T. Mitchison et al.·Jul 22, 2026SaveLearn
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