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
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