Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Constraint-preserving quantum algorithm for the multi-frequency antenna placement problem
Matteo Vandelli, Francesco Ferrari, Daniele Dragoni·Nov 19, 2025
Quantum algorithms for combinatorial optimization typically encode constraints as soft penalties within the objective function, which can reduce efficiency and scalability compared to state-of-the-art classical methods that instead exploit constraint...
Design and Optimization of Adaptive Diversity Schemes in Quantum MIMO Channels
Shehbaz Tariq, Symeon Chatzinotas·Nov 19, 2025
As quantum networks evolve toward a full quantum Internet, reliable transmission in quantum multiple-input multiple-output (QuMIMO) settings becomes essential, yet remains difficult due to noise, crosstalk, and the mixing of quantum information acros...
Parity anomalies in 2+1-dimensional Aharonov-Bohm type configurations
Harun Basmaci, Hasan Ozgur Cildiroglu·Nov 19, 2025
We demonstrate that Dirac fermions in 2+1 dimensions, coupled to Abelian gauge fields in multiply-connected regions, exhibit a parity anomaly that directly manifests as Aharonov-Bohm (AB) type topological phases. Using the Fujikawa method, we show th...
Inhomogeneous SSH models and the doubling of orthogonal polynomials
Nicolas Crampé, Quentin Labriet, Lucia Morey +2 more·Nov 19, 2025
We analyze Su-Schrieffer-Heeger (SSH) models using the doubling method for orthogonal polynomial sequences. This approach yields the analytical spectrum and exact eigenstates of the models. We demonstrate that the standard SSH model is associated wit...
Stochastic unravelings for Heisenberg picture and trace-nonpreserving dynamics
Federico Settimo, Kimmo Luoma, Dariusz Chruściński +3 more·Nov 19, 2025
Stochastic unravelings allow to efficiently simulate open system dynamics, yet their application has traditionally been restricted to master equations that preserve both Hermiticity and trace. In this work, we introduce a general framework that exten...
Optomechanical disk resonator in the quantum ground state of motion
Andrea Barbero, Samuel Pautrel, Bertrand Evrard +5 more·Nov 19, 2025
Although they have enabled several advances in the field of optomechanics, optomechanical disk resonators have not yet been operated in the quantum regime. We present the first experimental demonstration of an optomechanical disk resonator prepared i...
Overview of Routing Approaches in Quantum Key Distribution Networks
Ivan Cvitic, Dragan Perakovic, Armando Nolasco Pinto·Nov 19, 2025
Quantum Key Distribution (QKD) networks enable unconditionally secure key exchange using quantum mechanical principles. However, routing cryptographic keys across multi-hop quantum networks introduces challenges unique to quantum communication. This ...
Topological Quantum Transducers in a Hybrid Rydberg Atom System
Pei-Yao Song, Jin-Lei Wu, Weibin Li +1 more·Nov 19, 2025
We propose a topological transport platform for microwave-to-optical conversion at the single-photon level in a Rydberg atom-cavity setting. This setting leverages a hybrid dual-mode Jaynes-Cummings (JC) configuration, where a microwave resonator cou...
Bell Inequality Violation with Vacuum-One-Photon Number Superposition States
Zi-Qi Zeng, Jian Wang, Xiu-Bin Liu +8 more·Nov 19, 2025
Entanglement is a central resource in quantum technologies, and the realization of photonic entanglement necessarily relies on interaction with matter. Resonance fluorescence (RF), originating from the coherent interaction between a driving field and...
Axiomatising the dagger category of complex Hilbert spaces
Jan Paseka, Thomas Vetterlein·Nov 19, 2025
We axiomatise the dagger category of complex Hilbert spaces and bounded linear maps, using exclusively purely categorical conditions. Our axioms are chosen with the aim of an easy interpretability: two of them describe the composition of objecs, two ...
QSentry: Backdoor Detection for Quantum Neural Networks via Measurement Clustering
Shuolei Wang, Zimeng Xiao, Jinjing Shi +3 more·Nov 19, 2025
Quantum neural networks (QNNs) are an important model for implementing quantum machine learning (QML), while they demonstrate a high degree of vulnerability to backdoor attacks similar to classical networks. To address this issue, a quantum backdoor ...
Fidelity-Preserving Quantum Encoding for Quantum Neural Networks
Yuhu Lu, Jinjing Shi·Nov 19, 2025
Efficiently encoding classical visual data into quantum states is essential for realizing practical quantum neural networks (QNNs). However, existing encoding schemes often discard spatial and semantic information when adapting high-dimensional image...
Refraction Hall Effect
Ronika Sarkar, Arka Bandyopadhyay, Awadhesh Narayan +1 more·Nov 19, 2025
We introduce a new mechanism that produces a Hall-like response in time-reversal-invariant materials, driven entirely by geometric effects. Specifically, we demonstrate that a tilted potential interface causes electron wave packets to undergo a refra...
Thermalizing channel states for rapid qubit heating
Ziyang You, Wenhui Huang, Libo Zhang +4 more·Nov 19, 2025
Although known for negatively impacting the operation of superconducting qubits, thermal baths are shown to exert qubit control in a positive way, provided they are properly engineered. We demonstrate an experimental method to engineer the transducti...
Calibration of single-photon cameras using radioluminescent light sources
Radek Machulka, Václav Michálek, Ondřej Haderka +1 more·Nov 19, 2025
In this paper, we address the calibration of the quantum efficiency of single-photon cameras using radioluminescent light sources. The proposed methods are subsequently compared with absolute calibration techniques based on the detection of correlate...
Tensor-network approach to quantum optical state evolution beyond the Fock basis
Nikolay Kapridov, Egor Tiunov, Dmitry Chermoshentsev·Nov 19, 2025
Understanding the quantum evolution of light in nonlinear media is central to the development of next-generation quantum technologies. Yet modeling these processes remains computationally demanding, as the required resources grow rapidly with photon ...
QADR: A Scalable, Quantum-Resistant Protocol for Anonymous Data Reporting
Nilesh Vyas, Konstantin Baier·Nov 19, 2025
The security of future large-scale IoT networks is critically threatened by the ``Harvest Now, Decrypt Later'' (HNDL) attack paradigm. Securing the massive, long-lived data streams from these systems requires protocols that are both quantum-resistant...
Note on Logical Gates by Gauge Field Formalism of Quantum Error Correction
Junichi Haruna·Nov 19, 2025
The gauge field formalism, or operator-valued cochain formalism, has recently emerged as a powerful framework for describing quantum Calderbank-Shor-Steane (CSS) codes. In this work, we extend this framework to construct a broad class of logical gate...
Fail fast: techniques to probe rare events in quantum error correction
Michael E. Beverland, Malcolm Carroll, Andrew W. Cross +1 more·Nov 19, 2025
The ultimate goal of quantum error correction is to create logical qubits with very low error rates (e.g. 1e-12) and assemble them into large-scale quantum computers capable of performing many (e.g. billions) of logical gates on many (e.g. thousands)...
Vehicle Routing Problems via Quantum Graph Attention Network Deep Reinforcement Learning
Le Tung Giang, Vu Hoang Viet, Nguyen Xuan Tung +2 more·Nov 19, 2025
The vehicle routing problem (VRP) is a fundamental NP-hard task in intelligent transportation systems with broad applications in logistics and distribution. Deep reinforcement learning (DRL) with Graph Neural Networks (GNNs) has shown promise, yet cl...