ExtraFerm: An Extended Matchgate SimulatorWe present and open source Extraferm, a quantum circuit simulator tailored to chemistry applications. More specifically, our simulator can compute the Born-rule probabilities of samples obtained from…Zack Hassman, Oliver Reardon-Smith, Gokul Subramanian Ravi et al.·Jul 27, 2026SaveLearn
Access to Klein Tunneling via Space-Time ModulationWe show that space-time modulation of electromagnetic potentials enables Klein tunneling far below the static threshold. The derived kinematics reveal oblique transitions that can connect…Furkan Ok, Amir Bahrami, Christophe Caloz·Jul 27, 2026SaveLearn
Quantum Complexity in Rule-Based Constrained Many-Body Models: Scars, Fragmentation, and ChaosKinetic constraints in quantum many-body systems strongly restrict the accessible Hilbert space, giving rise to highly nontrivial dynamical behavior. In recent years, such systems have attracted…Arkaprava Sil, Sudipto Singha Roy·Jul 27, 2026SaveLearn
A Simple and Efficient One-Shot Signature SchemeOne-shot signatures (OSS) are a powerful and uniquely quantum cryptographic primitive which allows anyone, given common reference string, to come up with a public verification key pk and a…Andrew Huang, Vinod Vaikuntanathan·Jul 27, 2026SaveLearn
Decomposition of multi-qutrit gates generated by Weyl-Heisenberg stringsDecomposing unitary operations into native gates is an essential step for implementing quantum algorithms. For qubit-based devices, where native gates are typically single- and two-qubit operations,…Daniele Trisciani, Marco Cattaneo, Zoltán Zimborás·Jul 27, 2026SaveLearn
Evolution of tripartite entanglement in three-qubit Quantum Gravity-Induced Entanglement of Masses (QGEM) with quantum decoherenceThe recently introduced quantum gravity-induced entanglement of masses (QGEM) protocol aims to test the quantum nature of gravity by witnessing the entanglement produced by the virtual exchange of a…Pablo Guillermo Carmona Rufo, Anupam Mazumdar, Carlos Sabín·Jul 27, 2026SaveLearn
Quantum Information-Theoretical Size Bounds for Conjunctive Queries with Functional DependenciesDeriving formulations to estimate worst-case size bounds for conjunctive queries under various constraints has been at the core of theoretical database research. If the problem has no constraints or…Valter Uotila, Jiaheng Lu·Jul 27, 2026SaveLearn
Non-Abelian Quantum Signal Processing: A Composite Pulse for Fast Analytic Control of Hybrid Oscillator-Qubit ProcessorsQuantum Signal Processing (QSP) transforms a unitary parameterized by a classical variable θ into one governed by a polynomial function f(θ). Though quantum mechanics is linear, such highly…Shraddha Singh, Baptiste Royer, Steven M. Girvin·Jul 27, 2026SaveLearn
Entanglement growth in the dark intervals of a locally monitored free-fermion chainWe consider a free fermionic chain with monitoring of the particle density on a single site of the chain and study the entanglement dynamics of quantum jump trajectories. We show that the…Giovanni Di Fresco, Youenn Le Gal, Davide Valenti et al.·Jul 27, 2026SaveLearn
Topology-dependent relativistic degradation of multipartite entanglementThe influence of relativistic motion on quantum entanglement is commonly attributed to acceleration-induced thermal noise. Here we show that, for asymmetric multipartite states, the topology of…Shu-Min Wu, Si-Han Shang, Xu Han et al.·Jul 26, 2026SaveLearn
Entanglement transitions and multifractality in monitored free-fermions with random long-range hoppingWe study the entanglement dynamics of a one-dimensional chain of monitored non-interacting complex fermions with random power-law hopping characterized by a decay exponent α. For α 1, in…Bo Fan, Antonio M. García-García·Jul 26, 2026SaveLearn
A Slice-Rank Drift Bound for Random Quantum \(k\)-SATRandom quantum satisfiability is a natural quantum analogue of random constraint satisfaction and a basic model for frustration-free local Hamiltonians. Despite extensive work on its satisfiable and…Jean Bernoulli Ravelomanana·Jul 26, 2026SaveLearn
Unified Framework for Bidirectional and Cyclic Teleportation under NoiseQuantum teleportation has evolved from single-qubit, unidirectional communication to multi-qubit and multidirectional protocols. However, most existing schemes rely on protocol-specific entangled…Soubhik De, Vedhanayagi R, Basherrudin Mahmud Ahmed A et al.·Jul 26, 2026SaveLearn
Environment-assisted squeezing in a coherently driven non-Hermitian degenerate parametric oscillatorEnvironment-assisted approaches to nonclassical light offer a practical path to strong squeezing in imperfect, lossy platforms. In this paper, we study a degenerate parametric oscillator in which a…Muhdin Abdo Wodedo, Berihu Teklu, Konstantin G. Zloshchastiev et al.·Jul 26, 2026SaveLearn
Quantum Separability in Polynomial TimeThe quantum separability problem asks whether a bipartite density matrix is separable or is η-far from every separable state. We give a randomized polynomial-time algorithm for this problem for…Giulio Malavolta·Jul 26, 2026SaveLearn
Can PCE solve the factorisation problem via optimisation?The ongoing progress in quantum technologies has fueled a sustained exploration of their potential applications across various domains, particularly in computational problems that are considered…Fernando Alonso, Colomán Samprón, Jacobo Veiga et al.·Jul 26, 2026SaveLearn
Fixed points in de Finetti hierarchiesDe Finetti theorems convert permutation symmetry into approximate mixtures of product states and thereby justify a wide range of reductions in classical and quantum statistics. In this work we study…Gereon Kossmann, Julius A. Zeiss·Jul 26, 2026SaveLearn
Qutrit-Based Neural Quantum Kernels for Classification TasksNeural quantum kernels (NQKs) construct quantum kernels by pretraining a quantum neural network (QNN) and subsequently reusing the trained circuit as a task-adapted embedding. Extending this…Camila Cristiano-Romero, Pablo Rodriguez-Grasa, Mikel Sanz·Jul 26, 2026SaveLearn
Mitigation of Measurement-Induced State Transitions via a Fast-Load and Fast-Clear ReadoutHigh-fidelity and rapid qubit readout is essential for superconducting quantum processors, typically realized through the quantum non-demolition (QND) dispersive interaction within a qubit-resonator…Wei-En Lin, Li-Chieh Hsiao, Chen-Hsun Ma et al.·Jul 26, 2026SaveLearn
Neural Network Learning of One-Bit Protocols for Qubit Measurement SimulationCommunication complexity provides a natural framework for quantifying the classical resources required to reproduce quantum statistics. In the qubit prepare-and-measure scenario, two classical bits…Josep Escrig, Mani Zartab, Giulio Gasbarri et al.·Jul 26, 2026SaveLearn
Optimal Dynamic Cooling of Multiple QubitsWe solve the closed-system problem of cooling M qubits, selected from N identical thermal qubits, to the lowest common local temperature allowed by unitarity. The optimal protocol consists of two…Mattia Reda, Massimiliano Sacchi, Chiara Macchiavello et al.·Jul 26, 2026SaveLearn
Effect of classical noises on the coherent population trapping based on the Green's function approach to the multiplicative stochastic processesInspired by the Green's function (GF) approach in quantum field theory (QFT) and many body physics, we have developed a mathematical formalism to investigate classical multiplicative stochastic…M. Mirzaee, B. Askari, Ali Motazedifard et al.·Jul 26, 2026SaveLearn
Performance and Stability of Quantum Krylov Diagonalization for the Hubbard ModelQuantum Krylov diagonalization (QKD) has emerged as a promising hybrid quantum-classical approach for estimating ground-state properties of many-body systems on near-term quantum devices. In this…Mohammad Mirzakhani, Hyukgun Kwon, Kyungsun Moon·Jul 26, 2026SaveLearn
An Integrated DFT-Wannier-Quantum Embedding Pipeline for Strongly Correlated Materials: Scaling Benchmarks in Li-hBNThe seamless integration of Density Functional Theory (DFT) with quantum variational algorithms is essential for the predictive simulation of strongly correlated materials. In this work, we present…Hermawan Kresno Dipojono·Jul 26, 2026SaveLearn
Generalized Mermin Inequalities for Benchmarking Large-Scale GHZ StatesMultipartite Bell tests provide a correlation-only route to benchmarking quantum processors, but their application at large scales is hindered by the rapid decay of many-body correlators under noise…Jianbin Cai, Junxiang Huang, Fynn Otto et al.·Jul 26, 2026SaveLearn