Quantum Brain

Papers

Live trends in quantum computing research, updated daily from arXiv.

Total Papers

26,974

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563

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Research Volume

12,531 papers in 12 months (-16% vs prior quarter)

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Papers by research theme (12 months). Hover for details.

Qubit Platforms

Hardware platform mentions in abstractsPhotonic leads

1,338 papers found

Probing and Enhancing the Robustness of GNN-based QEC Decoders with Reinforcement Learning

Ryota Ikeda·Aug 5, 2025

Graph Neural Networks (GNNs) have emerged as a powerful, data-driven approach for Quantum Error Correction (QEC) decoding, capable of learning complex noise characteristics directly from syndrome data. However, the robustness of these decoders agains...

Computer SciencePhysics

TensorHyper-VQC: A Tensor-Train-Guided Hypernetwork for Robust and Scalable Variational Quantum Computing

Jun Qi, Chao-Han Huck Yang, Pin-Yu Chen +1 more·Aug 1, 2025

Variational Quantum Computing (VQC) faces fundamental scalability barriers, primarily due to barren plateaus and sensitivity to quantum noise. To address these challenges, we introduce TensorHyper-VQC, a novel tensor-train (TT)-guided hypernetwork fr...

Quantum PhysicsAIcs.LGstat.ML

Dimension reduction with structure-aware quantum circuits for hybrid machine learning

A. Daskin·Jul 31, 2025

Schmidt decomposition of a vector can be understood as writing the singular value decomposition (SVD) in vector form. A vector can be written as a linear combination of tensor product of two dimensional vectors by recursively applying Schmidt decompo...

PhysicsComputer Science

Search for $t\bar tt\bar tW$ Production at $\sqrt{s} = 13$ TeV Using a Modified Graph Neural Network at the LHC

Syed Haider Ali, A. Ahmad, Muhammad Saiel +1 more·Jul 31, 2025

The simultaneous production of four top quarks in association with a ($W$) boson at $(\sqrt{s} = 13)$ TeV is an rare SM process with a next-to-leading-order (NLO) cross-section of $(6.6^{+2.4}_{-2.6} {ab})$\cite{saiel}. Identifying this process in th...

Physics

Neural network for excess noise estimation in continuous-variable quantum key distribution under composable finite-size security

Lucas Q. Galvão, Davi Juvêncio G. de Sousa, Micael Andrade Dias +1 more·Jul 30, 2025

Parameter estimation is a critical step in continuous-variable quantum key distribution (CV-QKD), especially in the finite-size regime where worst-case confidence intervals can significantly reduce the achievable secret-key rate. We provide a finite-...

Quantum Physics

Hybrid Quantum Classical Surrogate for Real Time Inverse Finite Element Modeling in Digital Twins

A. Alavi, Sanduni Jayasinghe, M. Mahmoodian +3 more·Jul 30, 2025

Large-scale civil structures, such as bridges, pipelines, and offshore platforms, are vital to modern infrastructure, where unexpected failures can cause significant economic and safety repercussions. Although finite element (FE) modeling is widely u...

PhysicsComputer Science

Quantum generative modeling for financial time series with temporal correlations

David Dechant, Eliot Schwander, Lucas van Drooge +4 more·Jul 29, 2025

Quantum generative adversarial networks (QGANs) have been investigated as a method for generating synthetic data with the goal of augmenting training data sets for neural networks. This is especially relevant for financial time series, since we only ...

PhysicsEconomics

Pitfalls when tackling the exponential concentration of parameterized quantum models

Reyhaneh Aghaei Saem, Behrang Tafreshi, Zoe Holmes +1 more·Jul 29, 2025

Identifying scalable circuit architectures remains a central challenge in variational quantum computing and quantum machine learning. Many approaches have been proposed to mitigate or avoid the barren plateau phenomenon or, more broadly, exponential ...

Physics

Embedding-Aware Quantum-Classical SVMs for Scalable Quantum Machine Learning

S. A. C. Ord'onez, Luis Fernando Torres Torres, Mario Bifulco +3 more·Jul 28, 2025

Quantum Support Vector Machines face scalability challenges due to high-dimensional quantum states and hardware limitations. We propose an embedding-aware quantum-classical pipeline combining class-balanced k-means distillation with pretrained Vision...

PhysicsComputer Science

A Novel Post-Quantum Secure Digital Signature Scheme Based on Neural Network

Satish Kumar, Md Arzoo Jamal·Jul 28, 2025

Digital signatures are fundamental cryptographic primitives that ensure the authenticity and integrity of digital documents. In the post-quantum era, classical public key-based signature schemes become vulnerable to brute-force and key-recovery attac...

Computer ScienceMathematics

Benchmarking a Tunable Quantum Neural Network on Trapped-Ion and Superconducting Hardware

Djamil Lakhdar-Hamina, Xingxin Liu, Richard Barney +4 more·Jul 28, 2025

We implement a quantum generalization of a neural network on trapped-ion and IBM superconducting quantum computers to classify MNIST images, a common benchmark in computer vision. The network feedforward involves qubit rotations whose angles depend o...

Computer SciencePhysics

FD4QC: Application of Classical and Quantum-Hybrid Machine Learning for Financial Fraud Detection A Technical Report

Matteo Cardaioli, Luca Marangoni, Giada Martini +5 more·Jul 25, 2025

The increasing complexity and volume of financial transactions pose significant challenges to traditional fraud detection systems. This technical report investigates and compares the efficacy of classical, quantum, and quantum-hybrid machine learning...

Computer Science

Quantum-Efficient Convolution through Sparse Matrix Encoding and Low-Depth Inner Product Circuits

Mohammad Rasoul Roshanshah, Payman Kazemikhah, Hossein Aghababa·Jul 25, 2025

Convolution operations are foundational to classical image processing and modern deep learning architectures, yet their extension into the quantum domain has remained algorithmically and physically costly due to inefficient data encoding and prohibit...

Physics

Graph Neural Network-Based Predictor for Optimal Quantum Hardware Selection

A. Tudisco, Deborah Volpe, Giacomo Orlandi +1 more·Jul 25, 2025

The growing variety of quantum hardware technologies, each with unique peculiarities such as connectivity and native gate sets, creates challenges when selecting the best platform for executing a specific quantum circuit. This selection process usual...

PhysicsComputer Science

Meta-learning of Gibbs states for many-body Hamiltonians with applications to Quantum Boltzmann Machines

R. V. Bhat, Rahul Bhowmick, Avinash Singh +1 more·Jul 22, 2025

The preparation of quantum Gibbs states is a fundamental challenge in quantum computing, essential for applications ranging from modeling open quantum systems to quantum machine learning. Building on the Meta-Variational Quantum Eigensolver framework...

Computer SciencePhysicsMathematics

Reconfigurable qubit states and quantum trajectories in a synthetic artificial neuron network with a process to direct information generation from co-integrated burst-mode spiking under non-Markovianity

Osama M. Nayfeh, C. Horne·Jul 22, 2025

The research and development of hardware neuron technologies are accelerating at a very fast pace to provide for increased efficiency in performing artificial intelligence and autonomy functions beyond that possible with emulation on digital computer...

Physics

A scalable quantum-neural hybrid variational algorithm for ground state estimation

Minwoo Kim, Kyoung Keun Park, Uihwan Jeong +2 more·Jul 15, 2025

We propose the unitary variational quantum-neural hybrid eigensolver (U-VQNHE), which improves upon the original VQNHE by enforcing unitary neural transformations. The non-unitary nature of VQNHE causes normalization issues and divergence of the loss...

Quantum Physics

On the Importance of Fundamental Properties in Quantum-Classical Machine Learning Models

Silvie Illésová, Tomasz Rybotycki, Piotr Gawron +1 more·Jul 14, 2025

We present a systematic study of how quantum circuit design, specifically the depth of the variational ansatz and the choice of quantum feature mapping, affects the performance of hybrid quantum-classical neural networks on a causal classification ta...

Quantum Physics

Functional Neural Wavefunction Optimization

Victor Armegioiu, Juan Carrasquilla, Siddhartha Mishra +4 more·Jul 14, 2025

We propose a framework for the design and analysis of optimization algorithms in variational quantum Monte Carlo, drawing on geometric insights into the corresponding function space. The framework translates infinite-dimensional optimization dynamics...

Computer SciencePhysicsMathematics

Quantum Convolution for Structure-Based Virtual Screening

Pei-Kun Yang·Jul 13, 2025

Structure-based virtual screening (SBVS) is a key computational strategy for identifying potential drug candidates by estimating the binding free energies (delta G_bind) of protein-ligand complexes. The immense size of chemical libraries, combined wi...

Physics
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