Papers
Live trends in quantum computing research, updated daily from arXiv.
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Packet Routing for the Quantum Internet
Robert Malaney·Jul 7, 2026
We present a new design for quantum packet routing within the emerging Quantum Internet, highlighting how a little-used feature of Internet Protocol Version 6 (IPv6), namely Extension Headers, can lead to a significant amount of quantumness within th...
Quantization of the classical Mpemba effect
Jannis Melles, Hartmut Löwen, Benno Liebchen +4 more·Jul 7, 2026
The Mpemba effect refers to the counterintuitive phenomenon that an initially hot system can freeze faster than an initially warm one. Recent years have brought major advances in both classical and quantum realizations, with the asymmetric bistable p...
SQGen: Structured Quantum Image Generation with Latent-Modulated Quantized Tensor Trains
Guang Lin, Qibin Zhao·Jul 7, 2026
Generating images directly from quantum systems is an attractive but unresolved goal on NISQ hardware. Existing quantum generators face several coupled obstacles: barren plateaus that block trainability, expensive quantum circuit preparation, and har...
Genuine Multi-Entropy in the Toric Code
Sriram Akella, Norihiro Iizuka, Akihiro Miyata·Jul 7, 2026
We study genuine multi-entropy as a diagnostic of multipartite entanglement in the toric code, which provides a controlled setting for probing multipartite structures in topologically ordered states. Our main question is whether genuine multi-entropy...
Single-photon polarization tomography with an integrated metal-superconductor nanowire array
Pierre Brosseau, Jiawei Wang, Giorgio Adamo +2 more·Jul 7, 2026
Light polarization is a primary degree of freedom for encoding quantum information. The scaling up of photonic quantum networks and computer architecture depends crucially on its precise characterization. This is typically achieved by placing externa...
Hybrid quantum floating-point method for sharp arithmetic
Gabriele Agliardi, Enrico Prati·Jul 7, 2026
There are several possible ways to encode random variables in a quantum state. The basis encoding of bit strings has paramount importance because it allows to load the values of a random variable through the superposition of corresponding basis state...
Simplified quantum key distribution implementation secure in the presence of state preparation flaws
Ainhoa Agulleiro, Fadri Grünenfelder, Raphaël Houlmann +3 more·Jul 7, 2026
We present an implementation of a three-state BB84 protocol with time-bin encoding, one decoy state and a simplified measurement scheme that uses passive basis choice. Our system simplifies the state characterization with respect to previous iteratio...
Quantum Resources and Performance in the Initialization-Free Bernstein-Vazirani Algorithm
Haesol Han, Alexander Streltsov, Soojoon Lee·Jul 7, 2026
Naseri et al. [Phys. Rev. A 106, 062429 (2022); arXiv:2205.13610] studied which quantum resources in initial states are essential for the probabilistic Bernstein-Vazirani (BV) algorithm, defining its performance as the optimal average success probabi...
QUBO Modeling of Module Learning With Errors: Stability and Scaling in Post-Quantum Cryptography
Ruturaj Khamitkar, Durga Pritam Suggisetti, Soujanya Chatti +2 more·Jul 7, 2026
Lattice-based post-quantum cryptography relies on the hardness of the Learning With Errors (LWE) and Module Learning With Errors (MLWE) problems. This work introduces a constructive framework for encoding small MLWE instances as Quadratic Unconstrain...
Universal quantum cloning beyond noncontextual theory
Min Namkung, Hyang-Tag Lim·Jul 7, 2026
Quantum theory fundamentally forbids the perfect copying of an arbitrary unknown quantum state, according to a principle known as the no-cloning theorem. Nevertheless, it is possible to construct a deterministic quantum map that produces multiple app...
High-Precision Method for Characterizing Degree of Collimation and Beam Quality for Application in Cold Atom Gravimeter System
Nawaz Sarif Mallick, Anju, Aishik Acharya·Jul 7, 2026
Highly collimated laser beam with excellent spatial quality is essential for quantum sensing experiments, where even small residual beam divergence can accumulate over distance and introduce significant systematic errors. In this article, we present ...
Machine learning prediction of the convergence criterion for a topological invariant of finite non-Hermitian chains
Raghav Chaturvedi, Viktor Könye, Ewelina M. Hankiewicz·Jul 7, 2026
A topological invariant based on polar-decomposition of matrices correctly captures the topology of finite non-Hermitian chains exhibiting the non-Hermitian skin effect, provided that an appropriate crop-length parameter is chosen. This parameter, wh...
Strictly Local Tile-Code Architectures on Two-Dimensional Planar Lattices
Yoonjin Bae, Chae-Yeun Park·Jul 7, 2026
Tile codes are a family of planar quantum low-density parity-check (qLDPC) codes with weight-6 stabilizers and open boundary conditions, offering an encoding efficiency $kd^2/n$ of up to four times that of the surface code. In this work, we develop a...
Fixing Divergence in Carleman Linearization via Analytical Continuation
Mingshuo Zhu, Hayato Higuchi, Hokuto Iwakiri +4 more·Jul 7, 2026
Nonlinear differential equations play a crucial role in modeling a wide range of phenomena, yet their solutions remain notoriously difficult to obtain. With the rapid development of quantum computing, quantum algorithms for efficiently solving such e...
Hidden Complex Structure in Quotient-Space Real Quantum Mechanics
Jeongho Bang, Kyoungho Cho, Kyunghyun Baek·Jul 7, 2026
Barrios Hita et al. [Phys. Rev. Lett. $\bf{136}$, 240202 (2026)] argued that quantum mechanics can be formulated over the real numbers by replacing the tensor-product postulate with a quotient-space construction, and concluded that complex numbers ar...
Maximal coherence of quantum measurement and the resource theory of sharpness
Kyunghyun Baek, Yonggi Jo, Hyunchul Nha·Jul 7, 2026
A resource theory of quantum measurement can be addressed in terms of quantum coherence and measurement sharpness, respectively. The former analyzes the off-diagonal structure of POVM elements in a predetermined basis while the latter analyzes the de...
Latency-Constrained Hardware-Aware Quantum Error Correction Co-Design with Adaptive Confidence-Gated Neural Decoding for the Rotated Surface Code
Sumit Chongder·Jul 7, 2026
Real-time decoding is a major bottleneck in scaling quantum error correction (QEC) from noisy intermediate-scale quantum (NISQ) devices to fault-tolerant quantum computing. We present an adaptive confidence-gated decoding framework for the rotated su...
Onnes: A Physics-Grounded Multi-Agent LLM Simulator for Cryogenic Fault Diagnosis in Quantum Computing Infrastructure
Praneeth Narisetty, Uday Kumar Reddy Kattamanchi, Shiva Nagendra Babu Kore·Jul 7, 2026
Dilution refrigerators are the enabling infrastructure of superconducting quantum computers, yet their fault diagnosis is still dominated by threshold alarms that report that something is wrong, not what. We present Onnes, a physics-grounded digital-...
Self-Heating and Radiation Hardness Studies of 3nm GAA-FET-Based SRAM with Different Substrate Isolation Techniques
Albert Lu, Junipero Verbeke, Phil Oldiges +2 more·Jul 7, 2026
In this work, 3D full-domain 3 nm gate-all-around field-effect transistor (GAA-FET) static random access memories (SRAMs) with various substrate isolation techniques are simulated using Technology Computer-Aided Design (TCAD). In addition to the trad...
A Quantum-HPC Hybrid Workflow for Reaction-Center Electronic Dynamics: Application to a Cytochrome P450-Inspired Iron-Complex Model
Shintaro Maekawa, Takao Otsuka, Riku Masui +4 more·Jul 7, 2026
We introduce population-transfer dynamics as a practical validation observable for active-space-derived reduced Hamiltonians in multistate reaction-center chemistry. Using a cytochrome P450-inspired Fe-complex model, we construct a reaction-coordinat...