Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Analytical Solutions of One-Dimensional ($1\mathcal{D}$) Potentials for Spin-0 Particles via the Feshbach-Villars Formalism
Abdelmalek Boumali, Abdelmalek Bouzenada, Edilberto O. Silva·Mar 26, 2026
We present a unified analytical and numerical study of the one-dimensional Feshbach--Villars (FV) equation for spin-0 particles in the presence of several representative external potentials. Starting from the FV formulation of the Klein--Gordon equat...
Optimizing Entanglement Distribution Protocols: Maximizing Classical Information in Quantum Networks
Ethan Sanchez Hidalgo, Diego Zafra Bono, Guillermo Encinas Lago +3 more·Mar 26, 2026
Efficient entanglement distribution is the foundational challenge in realizing large-scale Quantum Networks. However, state-of-the-art solutions are frequently limited by restrictive operational assumptions, prohibitive computational complexities, an...
Weak distillation of quantum resources
Shinnosuke Onishi, Oliver Hahn, Ryuji Takagi·Mar 26, 2026
Importance sampling based on quasi-probability decomposition is the backbone of many widely used techniques, such as error mitigation, circuit knitting, and, more generally, virtual quantum resource distillation, as it allows one to simulate operatio...
Detecting Complex-Energy Braiding Topology in a Dissipative Atomic Simulator with Transformer-Based Geometric Tomography
Yang Yue, Nan Li, Xin Zhang +8 more·Mar 26, 2026
Machine learning (ML) is shaping our exploration of topological matter, whose existence is inherently tied to the geometry of quantum states or energy spectra. In non-Hermitian systems, distinctive spectral geometry can lead to topological braiding o...
Catalytic Quantum Error Correction: Theory, Efficient Catalyst Preparation, and Numerical Benchmarks
Hikaru Wakaura·Mar 26, 2026
We introduce Catalytic Quantum Error Correction (CQEC), a state recovery protocol exploiting catalytic covariant transformations. CQEC recovers a known target state from noisy copies without an error \emph{magnitude} threshold: recovery succeeds when...
Can every set of incompatible measurements lead to genuine multipartite steering?
Lucas E. A. Porto, Lucas Tendick, Daniel Cavalcanti +2 more·Mar 26, 2026
Measurement incompatibility and bipartite quantum steering are known to display a strong connection: a set of measurements is incompatible if and only if it can lead to bipartite steering. Despite such a close link between these concepts in bipartite...
Engineering energy-time entanglement from resonance fluorescence
Jian Wang, Xiu-Bin Liu, Ziqi Zeng +8 more·Mar 26, 2026
Resonance fluorescence from a coherently driven two-level emitter is a minimal quantum optical field that combines phase coherence with single-photon-level nonlinearity. Here we show that it can be engineered, using only passive linear interferometry...
The quantum mechanics of experiments
Jürg Fröhlich, Alessandro Pizzo·Mar 26, 2026
This note starts with a recapitulation of what people call the ``Measurement Problem'' of Quantum Mechanics (QM). The dissipative nature of the quantum-mechanical time-evolution of averages of states over large ensembles of identical isolated systems...
Causality is rare: some topological properties of causal quantum channels
Robin Simmons·Mar 26, 2026
Sorkin's impossible operations demonstrate that causality of a quantum channel in QFT is an additional constraint on quantum operations above and beyond the locality of the channel. What has not been shown in the literature so far is how much of a co...
CSI-tuples-based 3D Channel Fingerprints Construction Assisted by MultiModal Learning
Chenjie Xie, Li You, Ruirong Chen +2 more·Mar 26, 2026
Low-altitude communications can promote the integration of aerial and terrestrial wireless resources, expand network coverage, and enhance transmission quality, thereby empowering the development of sixth-generation (6G) mobile communications. As an ...
High-Fidelity Quantum State Transfer in Multimode Resonators via Tunable Pulses
Yuanning Chen, Xinxin Yang, Simon Gröblacher·Mar 26, 2026
Quantum state transfer between distant nodes is essential for distributed quantum information processing. Existing protocols are typically optimized for specific coupling regimes, such as adiabatic dark-state transfer in the single-mode limit and pit...
Superconducting Parallel-Plate Resonators for the Detection of Single Electron Spins
André Pscherer, Jannes Liersch, Patrick Abgrall +7 more·Mar 26, 2026
We introduce a multilayer superconducting microwave resonator with sub-Ohm impedance optimized for high coupling strength to single electron spins. The design minimizes the magnetic far-field and therefore achieves a Purcell factor $F_P > 10^{15}$. W...
Epitaxial CeO2 Films as a Host for Quantum Applications
Pralay Paul, Kusal M. Abeywickrama, Nisha Geng +18 more·Mar 26, 2026
In highly purified host, the coherence of quantum emitters is ultimately limited by hyperfine interactions between the emitter and lattice nuclei possessing non-zero nuclear magnetic moments. This limitation can only be mitigated through isotopic pur...
The 27-qubit Counterexample to the LU-LC Conjecture is Minimal
Nathan Claudet·Mar 26, 2026
It was once conjectured that two graph states are local unitary (LU) equivalent if and only if they are local Clifford (LC) equivalent. This so-called LU-LC conjecture was disproved in 2007, as a pair of 27-qubit graph states that are LU-equivalent, ...
Variance Based Transmitter Localization in Vessel-Like Molecular Communication Channels
Dağhan Erdönmez, H. Birkan Yilmaz·Mar 26, 2026
Transmitter localization in vessel-like molecular communication channels is a fundamental problem with potential applications in healthcare. Existing analytical solutions either assume knowledge of emission time or require multiple closely spaced rec...
The Competence Shadow: Theory and Bounds of AI Assistance in Safety Engineering
Umair Siddique·Mar 26, 2026
As AI assistants become integrated into safety engineering workflows for Physical AI systems, a critical question emerges: does AI assistance improve safety analysis quality, or introduce systematic blind spots that surface only through post-deployme...
Chiral quantum batteries
Rong-Fang Liu, Wan-Lu Song, Wan-Li Yang +2 more·Mar 26, 2026
Exploiting quantum effects for energy storage, quantum batteries (QBs) offer compelling advantages over conventional ones in terms of superior energy density, ultrafast charging, and high conversion efficiency. However, their realization is hampered ...
Banach and counting measures, and dynamics of singular quantum states generated by averaging of operator random walks
E. A. Dzhenzher, S. V. Dzhenzher, V. Zh. Sakbaev·Mar 26, 2026
In this paper the random channels and their compositions in the space of quantum states are studied. For compositions of i.i.d. random unitary channels, the limit behaviour of probability distributions is described. The sufficient condition for conve...
Reinforcement learning for quantum processes with memory
Josep Lumbreras, Ruo Cheng Huang, Yanglin Hu +2 more·Mar 26, 2026
In reinforcement learning, an agent interacts sequentially with an environment to maximize a reward, receiving only partial, probabilistic feedback. This creates a fundamental exploration-exploitation trade-off: the agent must explore to learn the hi...
Optimal measurement-based quantum thermal machines in a finite-size system
Chinonso Onah, Obinna Uzoh, Obinna Abah·Mar 26, 2026
We present a measurement-based quantum thermal machine that extracts work from the back-action of generalized quantum measurements whose working medium is a coupled two-level quantum system. Specifically, we derive universal optimization criteria for...