Quantum Codes with Arbitrary Z-Rotation logical Gates and Applications to Fault-Tolerant Code SwitchingA technique for realizing a universal set of fault-tolerant quantum operations is the code switching method, which leverages two quantum codes with complementary sets of transversal gates. To date,…Reza Dastbasteh, Ruben M. Otxoa, Pedro M. Crespo et al.·Aug 11, 2026SaveLearn
Breaking the Quadratic Barrier for von Neumann Entropy EstimationWe study the sample complexity of estimating the von Neumann entropy of an unknown d-dimensional quantum state. All previously known estimators require Ω(d2) samples, and plug-in estimators are…Minbo Gao, Qisheng Wang·Aug 11, 2026SaveLearn
A Sharp Local-Question Threshold for GHZ-Equatorial Completeness in Four-Player XOR GamesWe determine the smallest number of active questions per player at which a four-player binary exclusive-or (XOR) game of commuting-operator value one need not admit a Greenberger--Horne--Zeilinger…Ziao Tang, Chengkai Zhu, Ge Bai et al.·Aug 11, 2026SaveLearn
Robust CHSH Self-Testing with Finite-Energy GKP StatesWe present a full-oscillator analysis of a finite-energy GKP CHSH test whose observed score yields robust Bell-pair self-testing. Periodically binned position and momentum give the Pauli settings,…Farzin Salek, Masahito Hayashi·Aug 11, 2026SaveLearn
Physics-Constrained Compressed Sensing for Quantum Sensing in the Data-Starved RegimeQuantum sensors promise measurement sensitivities that can scale at the Heisenberg limit, but in practice their performance is often degraded by noise, finite sampling, and implementation…Amir Kalev·Aug 11, 2026SaveLearn
Quantum Coordination Advantages in AI State-Tracking Tasks: Semantic Compilation and Latent MemoryWe prove inference-time quantum coordination advantages for specified AI state-tracking tasks. A solver compresses semantic history into a future-accessible boundary state and later answers a query.…Ming Yang·Aug 11, 2026SaveLearn
Entanglement depth and ancilla efficiency in quantum channel estimationWe study the role of ancillary entanglement in quantum channel parameter estimation and investigate the minimal ancilla dimension required to achieve the maximum Fisher information. We introduce the…Javid Naikoo·Aug 11, 2026SaveLearn
The entanglement-assisted transmission capacity is a strong converse bound for identificationClassical identification via a noisy channel is a communication task in which the receiver is not required to reconstruct the full transmitted message, but only to decide whether it coincides with a…Satvik Singh·Aug 11, 2026SaveLearn
Verifying full quantum network nonlocality in arbitrary configurations by nonlinear Bell-like inequalitiesFull quantum network nonlocality (FQNN) describes a scenario where all sources in a network are nonlocal. Existing criteria of FQNN can only be verified in star networks by violating a single…Shuyuan Yang, Jinchuan Hou, Kan He et al.·Aug 11, 2026SaveLearn
Enhanced two-photon blockade without cascade channel by Stark nonlinear couplingTwo-photon blockade (TPB) besides the conventional one-photon blockade can control the photon at the level of individual quanta in the input-output measurements of light-matter coupling systems.…Zu-Jian Ying, Hang-Hang Han·Aug 11, 2026SaveLearn
Quantum Signatures of Two-Electron HBT Interference in Free SpaceUnderstanding how fermionic exchange and Coulomb repulsion jointly shape two-electron correlations is essential for identifying genuine quantum signatures in multi-electron interference experiments.…Florian Fleischmann, Mona Bukenberger, Anton Classen et al.·Aug 11, 2026SaveLearn
A Quantum Dynamics Tutorial: Visualising Dynamical Decoupling Sequences on the Bloch SphereDynamical decoupling protocols provide a versatile toolbox for robust control of quantum systems, suppressing noise that would otherwise limit their performance. This tutorial aims to provide an…Charlie J. Patrickson, Isaac Bailey, Antonio Orazzo et al.·Aug 11, 2026SaveLearn
Boosting self hybridized exciton polaritons with metal clad WS2 waveguidesThe formation of Fabry Perot and guided wave self hybridized exciton polaritons in two dimensional materials results in long range exciton energy transfer and strong exciton exciton interactions.…Filip Majstorovic, Masoud Taleb, Victor DeManuel-Gonzalez et al.·Aug 11, 2026SaveLearn
Theoretical analysis towards accurate optomechanical detection of quantum gravity effectsOptomechanical systems offer a promising platform for observing dynamical signatures of quantum gravity through precision measurements of quantum harmonic oscillator dynamics. However, most existing…Ying Li, Yan Li, Chengsong Zhao et al.·Aug 11, 2026SaveLearn
Projection measurement of the comb basis through free-electron-photon interactionsFree electrons, driven by rapid advances in photon-induced near-field electron microscopy, have emerged as a promising platform for quantum information processing, including quantum computing and…Zihang Zou, Feng-Xiao Sun, Yunquan Liu et al.·Aug 11, 2026SaveLearn
A Quantum Algorithm for Solving the Poisson Equation for Free Field Conditions via the Hockney MethodFor the often encountered problem of the Poisson equation, this work presents a quantum algorithm solving it based on the quantum Fourier transform (QFT) for periodic boundary conditions as well as…Hans A. Kösel, Roland Ewert, Jan W. Delfs·Aug 11, 2026SaveLearn
Resource-bounded controllability benchmarking of open quantum systemsThis paper develops a resource-bounded framework for evaluating practical controllability in open quantum systems using a trained graybox response model. Rather than treating controllability as a…Yule Mayevsky, Akram Youssry, Alberto Peruzzo·Aug 11, 2026SaveLearn
Quantum steering is equivalent to state-preserving conditional expectationsIn systems with infinitely many degrees of freedom, fundamental results from quantum information theory can fail. An important example is the uniqueness of purifications: Even when two subsystems,…Lauritz van Luijk, Amine Marrakchi, Tobias Osborne et al.·Aug 11, 2026SaveLearn
Helium-like ions (Z,e,e) in Lagrange Mesh method, interpolating the highly-accurate energy spectra vs. ZTwo alternative approaches for studying Helium-like atomic ions in non-relativistic quantum mechanics are proposed: (I) a numerical approach, based on the Lagrange-mesh method which can easily reach…H Olivares-Pilon, JC Lopez-Vieyra, AV Turbiner·Aug 11, 2026SaveLearn
Optimal fidelity estimation when one state is pure via algorithmic Uhlmann transformThe Uhlmann fidelity F(ρ0,ρ1) = tr|ρ0ρ1| is one of the most fundamental quantities in quantum information theory for quantifying the closeness between two quantum…Yupan Liu, Qisheng Wang·Aug 11, 2026SaveLearn
Quantum Computing for Industrial Electromagnetics: Applicability and Case Studies in Solving Maxwell's EquationsComputational electromagnetics plays a central role in many industrial applications but often requires substantial computational resources, particularly when fine spatial discretizations are needed.…Francesco Turro, Marco Maronese, Daniele Dragoni·Aug 11, 2026SaveLearn
Photonic realization of a subgraph extraction in a quantum random networkUnderstanding how complex connectivity emerges in networks is a fundamental challenge in classical and quantum science. In classical random networks, complex subgraphs typically require relatively…Lijun Xia, Xuemei Gu, Kai Wang et al.·Aug 11, 2026SaveLearn
Zero transfer on mixed graphsIn this paper, we investigate zero transfer on mixed graphs. Zero transfer is a quantum walk phenomenon in which the transition amplitude between two vertices is identically zero for all times, so…Xingkun Song, Huiqiu Lin·Aug 11, 2026SaveLearn
Nanoscale graphitization and defect evolution in silicon-vacancy center-containing nanodiamonds under high-pressure high-temperature annealingGroup-IV color centers, such as the silicon-vacancy (SiV) defect, are highly promising for solid-state quantum technologies. However, nanodiamonds typically exhibit significant lattice strain and…M. De Feudis, B. Yavkin, L. Henry et al.·Aug 11, 2026SaveLearn
Generating GKP states using quantum dots inside a strongly coupled cavityGKP states enable fault-tolerant CV quantum computation, but their generation remains experimentally challenging due to their highly non-Gaussian and infinite-energy ideal structure. In this work, we…Viswatma Kamath, Ravi Mehta, Biman Chattopadhyay et al.·Aug 11, 2026SaveLearn