Spectral amplification for ground-state energy estimation of electronic structure in first quantizationWe demonstrate an asymptotic gate complexity improvement in first-quantized ground-state energy estimation of electronic structure Hamiltonians in a plane wave basis by employing the sum-of-squares…Alicja Dutkiewicz, Alec F. White, Guang Hao Low et al.·Jul 16, 2026SaveLearn
The Paradox of the Third Particle is classicalThe Paradox of the Third Particle arises when particles are described relative to one of them serving as a reference frame. Although it is typically attributed to quantum superpositions, we show that…Ladina Hausmann, Renato Renner·Jul 16, 2026SaveLearn
Causality from the spectrum: Emergence of causal order from process-matrix mereologyIn Hamiltonian systems, the only basis-independent quantity is the spectrum. Given a spectrum, quantum mereology seeks preferred tensor-product decompositions into local subsystems, leading to the…Varun Kushwaha, Nicolas Loizeau, Alexei Grinbaum et al.·Jul 16, 2026SaveLearn
Non-Hermitian Quantum Adiabatic AlgorithmNon-Hermitian systems offer new opportunities for quantum optimization and computation. Here, we show that non-Hermitian quantum adiabatic algorithms require not only a real, gapped spectrum, but…Zi-Bo Jin, Yi Zhang·Jul 16, 2026SaveLearn
Quantum error-correcting codes from aperiodic monotiles: the Hat and the SpectreLi and Boyle showed that the Penrose tiling defines a quantum error-correcting code: superpositions of tilings over isometry orbits protect quantum information against erasure of any bounded region.…Josep Batle, Adam Bednorz·Jul 16, 2026SaveLearn
Collective Enhancement of Nuclear Excitation for a Nuclear Quantum BatteryCurrent implementations of quantum batteries are constrained by limited energy density and short retention times associated with the electronic or molecular excitations. Here we propose a nuclear…Pravin Kumar Dahal, Kieran Hymas, Jack Muir et al.·Jul 16, 2026SaveLearn
Locality of deep thermalisation through the lens of entanglement teleportationDeep thermalisation characterises the emergence of universal quantum state ensembles on subsystems due to projective measurements on their complement. We study the notion of locality, or lack…Saptarshi Mandal, Alan Sherry, Sthitadhi Roy·Jul 16, 2026SaveLearn
Dynamic Entanglement Distribution for Multi-User and Multi-Protocol Quantum NetworkingDynamic entanglement distribution is a key requirement for scalable, multi-user and multi-protocol quantum networks. We demonstrate a metropolitan-scale entanglement-based quantum communication…Rui Wang, Marcus J. Clark, Obada Alia et al.·Jul 16, 2026SaveLearn
Counterexamples to additivity of minimum output p-Rényi entropy of quantum channels for p>3/4 and 0≤ p<1/4Additivity of minimum output entropies is a central problem in quantum information theory. Nonadditivity is known for every Rényi order p>1, at the von Neumann point p=1, and near p=0, while…Debbie Leung, Benjamin Lovitz, Peixue Wu·Jul 16, 2026SaveLearn
Entanglement Detection for Two-Qubit and Three-Qubit Pure States via Unitary Transformations and Ancilla State MeasurementsQuantum entanglement is the fundamental hallmark of quantum mechanics and a core resource for realizing long-distance quantum communication and scalable linear quantum computing. Accordingly, the…Yu-Hang Liu, Yuan-Hong Tao, Yi-Wen Liu et al.·Jul 16, 2026SaveLearn
Backpropagating Pauli PropagationWe develop a backpropagation algorithm for evaluating parameter gradients in quantum circuits using Pauli propagation simulation. The method has computational complexity comparable to that of…Sheng-Hsuan Lin, Etienne Granet, Kevin Hémery et al.·Jul 16, 2026SaveLearn
Parameter-Shift Rules for Gradients in Boson Sampling ExperimentsUsing a robust photon loss model for photonic quantum experiments, we derive n-th order parameter-shift rules for computing gradients of Fock boson sampling transition probabilities where n…Marius Trudeau, Pierre-Emmanuel Emeriau, Nicolás Quesada·Jul 16, 2026SaveLearn
Superadditivity for Entanglement-Assisted CommunicationThe entanglement-assisted capacity of a quantum channel admits an additive single-letter characterization, implying that joint encodings across channel uses cannot increase the ultimate communication…Hao-Chung Cheng, Mario Berta·Jul 16, 2026SaveLearn
Quantum Lock-In Detection via Successive Adiabatic EvolutionIn recent years, quantum lock-in detection has emerged as a promising technique to accurately detect weak signals submerged in background noise. However, the signal-to-noise ratio of existing…Kangze Li, Siqi Chen, Hao Zhang et al.·Jul 16, 2026SaveLearn
An experimental pathway towards an exact theory of strong couplingWe employ a mathematically equivalent form of the GKLS master equation to arrive at an exact theoretical description of a two-level system strongly coupled to the environment. The framework, while…Eugenia Pyurbeeva, Ronnie Kosloff·Jul 16, 2026SaveLearn
Machine-Learning-Empowered Quantum Sensing of the Plaquette Phase in a Three-Level Delta SystemWe propose a machine-learning-empowered approach to the quantum sensing of the plaquette phase, a gauge-invariant quantity arising in three-level Δ systems. This phase profoundly affects the system…Lorenzo Vitale, Shreyasi Mukherjee, Dario Fasone et al.·Jul 16, 2026SaveLearn
Implicit differentiation of tensor network algorithmsThe current leading approach to the variational optimization of projected entangled-pair states (PEPS) is based on automatic differentiation, which allows for a convenient evaluation of the energy…Lander Burgelman, Anna Francuz, Paul Brehmer et al.·Jul 16, 2026SaveLearn
Pareto-optimal work extraction and the thermodynamic cost of precision in quantum information enginesWe study a finite-time quantum information engine in which a two-level system is measured by a quantum harmonic oscillator acting as a meter and where useful work is extracted conditionally on the…Jonas Berx, Ted Olander, Henning Kirchberg·Jul 16, 2026SaveLearn
Strong O-valued contextuality: ruling out discrete nondeterministic alternatives to quantum theoryGleason's theorem identifies the Born rule via non-contextuality over an infinite continuous lattice of projectors, while its corollary the Kochen-Specker (KS) theorem rules out the specific…Ravishankar Ramanathan·Jul 16, 2026SaveLearn
A Three-Point Continuous-Variable Quantum MacWilliams IdentityWe construct the three-point continuous-variable (CV) quantum MacWilliams identity, extending the two-point framework of Burchards, and give its closed-form integral kernel. Its configuration space…Yinzi Xiao·Jul 16, 2026SaveLearn
Evolution-Level Quantum Optimal Control of Single-Qubit Gates with Physics-Informed Neural NetworksQuantum gate design is often represented as pulse optimization, although the physical object that implements a gate is the full controlled evolution generated by the pulse. Here we use…Yao Du, Jian-Jian Cheng, Lin Zhang et al.·Jul 16, 2026SaveLearn
Limits on Broadcasting Genuine Multipartite Entanglement in Quantum NetworksWe establish operational limits on the broadcasting of genuine multipartite entanglement (GME) in quantum networks. Using a distributed protocol in which each of N parties locally implements optimal…Pritam Roy, William John Munro, Shashank Gupta·Jul 16, 2026SaveLearn
Binary Gauss Stabilizers for Abelian Lattice Gauge TheoriesGauge theories and quantum error-correcting codes share the same underlying structure: both use constraints to identify a specific subspace of the full Hilbert space. In quantum error correction,…Matteo Turco, Luca Spagnoli, Alessandro Roggero·Jul 16, 2026SaveLearn
Quantum Remote Implementation of Hybrid Operations on Hyperstates Using Hyperentangled StatesQuantum remote control, also known as quantum remote implementation of an operator (QRIO), enables the remote manipulation of an arbitrary quantum state by implementing a desired quantum operation at…Satish Kumar, Anirban Pathak·Jul 16, 2026SaveLearn
Robustness of periodicity in Grover walks under a magnetic vector potentialWe study the effect of magnetic vector potentials on periodic Grover walks on finite graphs. The magnetic vector potential is introduced through the framework of quantum graphs, which induces the…Hiroto Sekido, Etsuo Segawa·Jul 16, 2026SaveLearn