Papers
Adaptive Resource and Memory Control for Stability in Quantum Entanglement Distribution
Nicolò Lo Piparo, William J. Munro, Kae Nemoto·Mar 25, 2026
We investigate congestion-aware control of quantum repeater nodes operating under stochastic traffic and finite memory coherence. Entanglement generation is modeled as a probabilistic process producing Werner states subject to depolarizing memory dec...
SentinelAI: A Multi-Agent Framework for Structuring and Linking NG9-1-1 Emergency Incident Data
Kliment Ho, Ilya Zaslavsky·Mar 25, 2026
Emergency response systems generate data from many agencies and systems. In practice, correlating and updating this information across sources in a way that aligns with Next Generation 9-1-1 data standards remains challenging. Ideally, this data shou...
Superconducting properties of lifted-off Niobium nanowires
A. Kotsovolou, F. Soofivand, P. Singha +7 more·Mar 25, 2026
Hybrid superconductor/semiconductor devices play a crucial role in advancing quantum science and technology by merging the properties of superconductors and semiconductors. To operate these devices at high temperature, Niobium could substitute the wi...
Fluctuation-induced symmetry breaking in high harmonic generation for bicircular quantum light
Philipp Stammer, Camilo Granados, Javier Rivera-Dean·Mar 25, 2026
Symmetries are ubiquitous in physics and play a pivotal role in light-matter interactions, where they determine the selection rules governing allowed atomic transitions and define the associated conserved quantities. For the up-conversion process of ...
Efficient photon-pair emission from a nanostructured resonator and its theoretical description
Michael Poloczek, Alberto Paniate, Attilio Zilli +12 more·Mar 25, 2026
Spontaneous parametric down-conversion (SPDC) in subwavelength nonlinear nanostructures is emerging as a promising source of quantum light, owing to its intrinsic multifunctionality and ability to generate versatile and complex quantum states. Despit...
Robust Parametric Quantum Gate Against Stochastic Time-Varying Noise
Yang He, Zigui Zhang, Zibo Miao·Mar 25, 2026
The performance of quantum processors in the noisy intermediate-scale quantum (NISQ) era is severely constrained by environmental noise and other uncertainties. While the recently proposed quantum control robustness landscape (QCRL) offers a powerful...
In-Line Fiber-Integrated Photon-Pair Generation from van der Waals Crystals
Mayank Joshi, Tanumoy Pramanik, Mengting Jiang +9 more·Mar 25, 2026
Miniaturized quantum light sources that operate directly in optical fibers are an attractive platform for optical quantum technologies. However, most miniaturized spontaneous parametric down- conversion (SPDC) sources still rely on objective-lens-bas...
Towards Schrödinger Cat States in the Second Harmonic Generation
Ranjit Singh, Leonid A. Barinov, Grigori G. Amosov +1 more·Mar 25, 2026
We investigate the quantum evolution of the pump field in second-harmonic generation under strong pump depletion. Starting from a coherent state, the pump develops a nonclassical phase-space structure resembling a Schrödinger cat state. This behavior...
VOLMO: Versatile and Open Large Models for Ophthalmology
Zhenyue Qin, Younjoon Chung, Elijah Lee +16 more·Mar 25, 2026
Vision impairment affects millions globally, and early detection is critical to preventing irreversible vision loss. Ophthalmology workflows require clinicians to integrate medical images, structured clinical data, and free-text notes to determine di...
Laser-induced creation of coherent V2 centers in bulk-grown silicon carbide
L. J. Feije, G. M. Timmer, Y. Hu +7 more·Mar 24, 2026
Solid-state spin defects are promising qubits for quantum network nodes. A key challenge towards larger networks is creating defects with high yield into nanophotonic devices, while maintaining good optical and spin properties. Here, we demonstrate t...
Scalable quantum circuit generation for iterative ground state approximation using Majorana Propagation
Rahul Chakraborty, Aaron Miller, Anton Nykänen +6 more·Mar 24, 2026
We introduce the Adaptive Derivative-Assembled Pseudo-Trotter ansatz Variational Majorana Propagation Eigensolver (ADAPT-VMPE), a quantum-inspired classical algorithm that exploits Majorana Propagation (MP) to produce circuits for approximating the g...
Interference-induced state engineering and Hamiltonian control for noisy collective-spin metrology
Le Bin Ho, Vu Xuan Tung Duong, Nozomu Takahashi +1 more·Mar 24, 2026
Interference provides a fundamental mechanism for generating and manipulating entanglement in many-body quantum systems. Here, we develop an interference framework in which the nonlinear dynamics of collective spin-$\tfrac{1}{2}$ ensembles are mapped...
Revisiting Quantum Code Generation: Where Should Domain Knowledge Live?
Oscar Novo, Oscar Bastidas-Jossa, Alberto Calvo +2 more·Mar 23, 2026
Recent advances in large language models (LLMs) have enabled the automation of an increasing number of programming tasks, including code generation for scientific and engineering domains. In rapidly evolving software ecosystems such as quantum softwa...
Deterministic feedforward-based generation of large optical coherent-state superposition
Michele N. Notarnicola, Marcin Jarzyna, Radim Filip·Mar 23, 2026
Large optical coherent-state superpositions are essential to advance quantum sensing, quantum repeaters and error-correction codes. We propose a deterministic feedforward protocol employing qubit-mode dispersive coupling, currently available in cavit...
Nonlinear Electro-Optic Visible Photonic Circuits for Solid-State Quantum Defects
Yongchan Park, Yong Soo Lee, Hansol Kim +11 more·Mar 23, 2026
Integrated visible photonic engines for solid-state quantum defects provide a foundation for scalable quantum networks. While miniaturization is advancing, active manipulation remains limited by the difficulty of achieving simultaneous milliwatt-scal...
Experimental Quantum State Tomography of Multimode Gaussian States
Chan Roh, Geunhee Gwak, Young-Do Yoon +1 more·Mar 22, 2026
Multimode Gaussian states are a versatile resource for quantum information technologies and have been realized across a wide range of physical platforms. Recent progress in the large-scale generation of such states provides a key ingredient for scala...
A Quantum Encoding of Traveling Salesperson Tours via Route Generation, Cost Phases, and a Valid-Permutation Oracle
Alexander Johannes Stasik, Franz Georg Fuchs·Mar 22, 2026
We present a compact quantum encoding of the Traveling Salesperson Problem (TSP) based on a time-register representation of tours. A candidate route is represented as a sequence of $n$ city labels over discrete time steps, with one fixed start city a...
Contextuality as a Left Adjoint: A Categorical Generation of Orthomodular Structure
Yukio-Pegio Gunji, Yoshihiko Ohzawa, Yuki Tokuyama +2 more·Mar 22, 2026
Contextuality is widely regarded as a hallmark of quantum information, yet its structural origin is often obscured by probabilistic or operational formulations. In this work, we show that non-distributive orthomodular structure need not be postulated...
Entanglement in a driven two-qubit system coupled to common cavity
Amit Dey·Mar 21, 2026
A system, comprised of a qubit pair coupled to a common cavity, is studied with the aim of establishing qubit entanglement. This study is the sequel of the paper Phys. Rev. A 111, 043705 (2025), where similar model was investigated for an initially v...
Security of Binary-Modulated Optical Key Distribution Against Quantum-Enhanced Coherent Eavesdropping
Karol Łukanowski, Michał Wójcik, Stefano Olivares +2 more·Mar 20, 2026
Optical key distribution (OKD) protects the physical layer of communication links by taking advantage of the inherent noise present in the photodetection process. It allows for efficient generation of a shared random key between two distant users whi...