Papers
Assessing the Added Value of Onboard Earth Observation Processing with the IRIDE HEO Service Segment
Parampuneet Kaur Thind, Charles Mwangi, Giovanni Varetto +3 more·Apr 8, 2026
Current operational Earth Observation (EO) services, including the Copernicus Emergency Management Service (CEMS), the European Forest Fire Information System (EFFIS), and the Copernicus Land Monitoring Service (CLMS), rely primarily on ground-based ...
Continuous-variable two-dimensional cluster states in the microwave domain
Fabio Lingua, Michele Cortinovis, J. C. Rivera Hernández +1 more·Apr 8, 2026
We demonstrate the experimental realization of two-dimensional, continuous variable (CV) cluster states between 191 microwave frequency modes. This result is obtained by exposing vacuum fluctuations to the input of a Josephson Parametric Amplifier, p...
Quantum coherent transceivers toward Holevo-limited communications
Volkan Gurses, Suraj Samaga, Elianna Kondylis +1 more·Apr 8, 2026
The Holevo limit bounds the channel capacity of a communication channel in which information is encoded in quantum states in a Hilbert space at the transmitter and decoded using quantum measurements at the receiver. Saturating the Holevo limit requir...
Postquantum steering in scenarios with multiple characterised parties
Ana Belen Sainz·Apr 8, 2026
The study of stronger-than-quantum phenomena (i.e., postquantum) has enabled a deeper understanding of the scope of quantum theory. Much is known about the case of correlations in Bell scenarios, where the device-independent framework allowed us to e...
Complete coherent control of spin qubits in self-assembled InAs quantum dots under oblique magnetic fields
I. Samaras, K. Barr, C. Schneider +2 more·Apr 8, 2026
We demonstrate complete coherent control of a single spin qubit confined in a self-assembled InAs negatively charged quantum dot subjected to an Oblique magnetic field, and directly compare this regime with the conventional Voigt geometry. In the Obl...
AV-SQL: Decomposing Complex Text-to-SQL Queries with Agentic Views
Minh Tam Pham, Trinh Pham, Tong Chen +3 more·Apr 8, 2026
Text-to-SQL is the task of translating natural language queries into executable SQL for a given database, enabling non-expert users to access structured data without writing SQL manually. Despite rapid advances driven by large language models (LLMs),...
QNAS: A Neural Architecture Search Framework for Accurate and Efficient Quantum Neural Networks
Kooshan Maleki, Alberto Marchisio, Muhammad Shafique·Apr 8, 2026
Designing quantum neural networks (QNNs) that are both accurate and deployable on NISQ hardware is challenging. Handcrafted ansatze must balance expressivity, trainability, and resource use, while limited qubits often necessitate circuit cutting. Exi...
A Simple and Robust Balanced Homodyne Detector for High-Repetition-Rate Pulsed Sources
Samuele Altilia, Edoardo Suerra, Pietro Puppi +3 more·Apr 8, 2026
We design and experimentally characterize a balanced homodyne detector optimized for high-repetition-rate (100 MHz) pulsed optical sources. Unlike conventional transimpedance-amplifier architectures, which suffer from nonlinearities and dynamic insta...
Statistical Analysis of the Reliability of Data Collected with Wireless Electrocardiograms Outside Clinical Settings
Yalemzerf Getnet, Waltenegus Dargie·Apr 8, 2026
Cost-effective wireless electrocardiograms (ECGs) enable long-term and scalable monitoring of cardiac patients in their home and work environments. Because they offer greater freedom of movement, they are also suitable for investigating the relations...
Scalable on-chip integration of diamond color centers for cryogenic quantum photonics
H. Kurokawa, K. Sato, M. Kamata +16 more·Apr 8, 2026
Chip integration of quantum emitters is a crucial milestone for scalable quantum photonic information processing. Among optically active defect centers for quantum photonics, diamond color centers are promising because of their long spin coherence ti...
Superradiance enhances and suppresses fermionic pairing based on universal critical scaling rate in two order parameters systems
Yilun Xu·Apr 8, 2026
Distinguished from the system with one order parameter, systems described by two or more order parameters will manifest more complex and much richer phase diagram and critical phenomena. In systems of two order parameters, the phase transition of one...
Tensor-network simulation of quantum transport in many-quantum-dot systems
Maximilian Streitberger, Marko J. Rančić·Apr 8, 2026
Transport through correlated nanoscale systems underpins the operation of quantum-dot and molecular-scale devices, yet accurate simulations of large open quantum systems remain computationally challenging as system size increases. Tensor-network meth...
Quantum MIMO Channel Modeling in Turbulent Free-Space Optical Links
Heyang Peng, Seid Koudia, Semih Oktay +2 more·Apr 8, 2026
Free-space optical (FSO) links supporting spatial multiplexing provide a natural physical realization of Quantum MIMO channels. We develop a first-principles model for Quantum MIMO channels derived directly from wave-optical propagation through three...
A Practical Introduction to Tensor Network Renormalization with TNRKit.jl
Victor Vanthilt, Adwait Naravane, Chenqi Meng +1 more·Apr 8, 2026
We present TNRKit, an open-source Julia package for Tensor Network Renormalization (TNR) of two- and three-dimensional classical statistical models and Euclidean lattice field theories. Built on top of TensorKit, it provides a symmetry-aware framewor...
Quantum Relative-alpha-Entropies: A Structural and Geometric Perspective
Sayantan Roy, Atin Gayen, Aditi Kar Gangopadhyay +1 more·Apr 8, 2026
Most quantum divergences derive their structure from classical f-divergences or Renyi-type constructions, a dependence that obscures several quantum geometric effects. We introduce a quantum relative-alpha-entropy that extends Umegaki's relative entr...
XR-CareerAssist: An Immersive Platform for Personalised Career Guidance Leveraging Extended Reality and Multimodal AI
N. D. Tantaroudas, A. J. McCracken, I. Karachalios +2 more·Apr 8, 2026
Conventional career guidance platforms rely on static, text-driven interfaces that struggle to engage users or deliver personalised, evidence-based insights. Although Computer-Assisted Career Guidance Systems have evolved since the 1960s, they remain...
Emergence of Non-Markovian Classical-Quantum Dynamics from Decoherence
Shogo Tomizuka, Hiroki Takeda·Apr 8, 2026
The quantum nature of gravity remains experimentally unverified, despite recent proposals to probe it using tabletop experiments such as gravity-mediated entanglement schemes. In parallel, consistent formulations of classical--quantum dynamics have b...
Millisecond spin relaxation times of distinct electron and hole subensembles in MA$_x$FA$_{1-x}$PbI$_3$ perovskite crystals
Rongrong Hu, Sergey R. Meliakov, Dmitri R. Yakovlev +4 more·Apr 8, 2026
The unique combination of outstanding optical quality and attractive spin properties opens new avenues for optical spin control in hybrid organic-inorganic perovskite semiconductors. Using the optically detected magnetic resonance technique, we study...
Telecom C-band single-photon sources with a semiconductor-dielectric microresonator
Yuriy Serov, Aidar Galimov, Sergey Sorokin +19 more·Apr 8, 2026
Secure communications with quantum key distribution over fiber-optic links is one of the few recognized applications of quantum physics at the level of individual quanta -- single C-band photons. Currently, the widely used sources of such photons are...
A hardware efficient quantum residual neural network without post-selection
Amena Khatun, Akib Karim, Muhammad Usman·Apr 8, 2026
We propose a hardware efficient quantum residual neural network which implements residual connections through a deterministic linear combination of identity and variational unitaries, enabling fully differentiable training. In contrast to the previou...