Systematic construction of multiqubit unextendible product basesThe construction of multiqubit unextendible product bases (UPBs) has been a long-standing problem. We give a systematic construction of multiqubit UPBs by studying their unextendible orthogonal…Caohan Cheng, Lin Chen·Sep 13, 2026SaveLearn
Universal computation with magic HamiltoniansIn the conventional theory of quantum computation, universality is discussed in terms of properties of unitary gate sets. In many experimental setups, however, we instead have access to a…Marius Junge, Jason Pollack, Luke Visser·Sep 13, 2026SaveLearn
Unique determination and generation of rank two single-qubit quantum channelsAn important problem in quantum technologies is the generation of a target evolution of an open quantum system. A core component of this task is the ability to determine whether the actual evolution…Nina Kuklina, Vasilii Vasilenko, Boris Volkov et al.·Sep 13, 2026SaveLearn
Exact Asymptotic Rates and an Exponential Strong Converse for quantum SMP and One-Way CommunicationComputing many instances jointly can reduce communication per instance. We ask whether such savings occur in the simultaneous-message-passing (SMP) model and how they depend on quantum messages and…Daiki Suruga·Sep 13, 2026SaveLearn
Collective-dissipation-controlled thermal rectification and entropy production in a three-terminal three-qubit XXZ spin chainWe investigate thermal rectification and its thermodynamic cost in a three-qubit XXZ spin chain coupled to three thermal reservoirs: two local baths attached to the boundary qubits and a collective…Alireza Nourmandipour·Sep 13, 2026SaveLearn
Linear equations mod n are pseudo-telepathicWe prove that the quantum monad in dimension 2n admits no natural transformation to the polymorphism clone of linear equations modulo n. Consequently, for every n≥ 2, there exists an…Lorenzo Ciardo·Sep 13, 2026SaveLearn
Derivatives of Quantum Randomness: Separating Pseudorandom Unitaries from Pseudorandom (Function-like) StatesQuantum computation gives rise to new pseudorandom primitives for states and unitaries, including pseudorandom state generators (PRSGs), pseudorandom function-like state generators (PRFSGs), and…Minki Hhan·Sep 13, 2026SaveLearn
A pretty-tight converse on the classical capacity of generalized amplitude-damping channelsThe classical capacity of a quantum channel is the highest rate at which classical information can be transmitted with vanishing error. Although the capacities of many fundamental quantum channels…Kun Fang·Sep 13, 2026SaveLearn
Dynamical Readout of Measurement Statistics and Emergent Entanglement-Like States in Classical NetworksCan a classical network not only encode a quantum-like state, but also read out its measurement statistics through its own collective dynamics? Here we introduce a network-native readout scheme for a…Songbo Xie, Ethan Dickey, Syed Ahmed Taimoor et al.·Sep 13, 2026SaveLearn
Simulating Quantum Physics Experiments One Event at a TimeThis text explores the fundamental divide between empirical laboratory data and continuous theoretical physics models, framing the "quantum measurement paradox" as an ontological error,…Hans De Raedt·Sep 13, 2026SaveLearn
When is global evolutionary search useful for variational quantum algorithms? A landscape-first studyVariational quantum algorithms recast state preparation as classical nonconvex optimization, but it is often unclear when multistart local search suffices and when population-based global search…Vojtěch Novák, Ivan Zelinka·Sep 13, 2026SaveLearn
Phase-controlled bipartite and tripartite entanglement and Bell nonlocality in a closed-loop optomechanical systemWe propose a novel scheme to generate and manipulate bipartite and tripartite entanglement and Bell nonlocality in a closed-loop three-mode optomechanical system, where two optical modes are…Sha-Sha Zheng, Zi-Nan Wu, Di-Di Xu et al.·Sep 13, 2026SaveLearn
Exact 1/4 mean-rung population and 2 continuum revival-time ratio in the anti-Jaynes--Cummings vertex at f= n+1At atomic resonance the Jaynes--Cummings (JC) vertex of a single bosonic mode coupled to a two-level emitter is blind to f=ω/λ at zero detuning and Kerr; the anti-Jaynes--Cummings (AJC) vertex is…Onyango Stephen Okeyo·Sep 13, 2026SaveLearn
Controlling quantum state transfer in rooted productsGodsil and McKay (1978) showed that the rooted product is a powerful tool for constructing non-isomorphic cospectral pairs of graphs. Despite lacking a convenient tensor product structure, we show…Addison Ballif, Christino Tamon, Gabriel Tucker·Sep 13, 2026SaveLearn
Proving olympiad geometry theorems on a superconducting quantum processorAutomated theorem proving seeks to use computational systems to prove or disprove mathematical and logical statements [1, 2]. It underpins a wide range of applications, and enhancing theorem-proving…Ning Wang, Zheng-Zhi Sun, Zhengyi Cui et al.·Sep 13, 2026SaveLearn
Parameter-Efficient Quantum NLP for Paraphrase Detection: Performance, Robustness, and EntanglementRigorous empirical validation of quantum machine learning on natural language tasks remains scarce. We evaluate a 10-qubit hybrid quantum-classical variational circuit (2,148 parameters) for…Farha Nausheen, Khandakar Ahmed, Farina Riaz·Sep 13, 2026SaveLearn
Preparation of Multimode NOON States via Floquet-Engineered Conditional Chiral ExcitationThe NOON states possess Heisenberg-limited phase sensitivity and are crucial for quantum-enhanced metrology. In our work, we develop a Floquet-engineered conditional-routing framework in which a…Mengxue Li, Bo Tian, H. Z. Shen et al.·Sep 13, 2026SaveLearn
Robustness of Hidden-Variable Theories and Matrix ScalingMotivated by quantum foundations and complexity theory, Aaronson formalized a hidden-variable theory inspired by a proposal by Schrödinger. To any quantum state and unitary, this Schrödinger theory…Giulio Malavolta, Harold Nieuwboer, Akshay Ramachandran et al.·Sep 13, 2026SaveLearn
Exact computation of quantum wave functions for nonlinear potentialsRecent work shows that the Schroedinger equation can be solved exactly based only on classical least action rspa.2025.0413. The computation is based on first solving a Hamilton-Jacobi equation for…Winfried Loghmiller, Jean-Jacques Slotine·Sep 13, 2026SaveLearn
NAQsim: Full-Stack Architecture Simulation Framework for Fast and Space-Efficient Neutral Atom Quantum ComputingTechnological advances in neutral-atom platforms have opened a new path toward designing efficient protocols for fault-tolerant quantum computing (FTQC). However, each physical operation is still…Yosuke Ueno, Shinichi Sunami, Toshihide Hinokuma et al.·Sep 13, 2026SaveLearn
Arithmetic of Bohr Frequencies Governs Uniform Mixing in Randomly Timed Quantum Spin ChainsRandomizing the readout time averages the mode interference in a quantum walk. We ask when this makes the site populations of a uniformly coupled XY chain exactly uniform for every initial site.…Musung Kang·Sep 13, 2026SaveLearn
Squeezing measurement with spectrally broadened in microstructured fiber local oscillatorRecently, continuous variables (CV) quantum computing, i. e. computing employing squeezed states, has attracted significant attention, as it enables to increase the dimensionality of the system. In…A. Chudakov, V. Severin, A. Poshevkina et al.·Sep 13, 2026SaveLearn
From breakfast, lunch, and dinner to the Bell-inequality tetrahedronA simple pedagogical discussion and visualization of certain Bell inequalities is presented with the help of a system involving two twins, originally discussed in…Francesco Giacosa·Sep 13, 2026SaveLearn
Indistinguishability Theory for Identical Particles with Invariant Degrees of FreedomIdentical particles have dynamically invariant labels in all setups where their degrees of freedom can be partitioned into two parts, which we call internal and visible, with the visible part subject…Valery Shchesnovich·Sep 13, 2026SaveLearn
Certification cost of quantum models: measurement correlation, not parameter countReporting the Fisher geometry of a trained variational quantum model is routine; quoting the shot budget that would establish it is not. Certifying an empirical Fisher matrix to relative Frobenius…Pavel Sulimov, Claude Lehmann·Sep 13, 2026SaveLearn