Quantum Brain

Papers

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

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27,881

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1,306

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Research Volume

13,127 papers in 12 months (+1% vs prior quarter)

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

Qubit Platforms

Hardware platform mentions in abstractsPhotonic leads

6,169 papers found

Symmetry-guided quantum state preparation: Branched-Subspaces Adiabatic Preparation (B-SAP)

Davide Cugini, Giacomo Guarnieri, Mario Motta +1 more·May 19, 2025

Quantum state preparation lies at the heart of quantum computation and quantum simulations, enabling the investigation of complex manybody systems across physics, chemistry, and data science. While existing methods such as Variational Quantum Algorit...

Quantum Physics

From Theory to Practice: Analyzing Variational Quantum Power Method for Quantum Optimization of QUBO Problems

Ammar Daskin·May 19, 2025

The variational quantum power method (VQPM), which adapts the classical power iteration algorithm for quantum settings, has shown promise for eigenvector estimation and optimization on quantum hardware. In this work, we provide a comprehensive theore...

Quantum Physics

Learning Best Paths in Quantum Networks

Xuchuang Wang, Maoli Liu, Xutong Liu +4 more·May 19, 2025

Quantum networks (QNs) transmit delicate quantum information across noisy quantum channels. Crucial applications, like quantum key distribution (QKD) and distributed quantum computation (DQC), rely on efficient quantum information transmission. Learn...

Computer SciencePhysics

Quantum Knowledge Distillation for Large Language Models

Lingxiao Li, Yihao Wang, Jiacheng Fan +4 more·May 19, 2025

As foundational tools in natural language processing, Large Language Models (LLMs) have immense parameter scales, which makes deployment and inference increasingly prohibitive, especially in resource-constrained devices. Therefore, knowledge distilla...

Physics

Genesis: A Compiler Framework for Hamiltonian Simulation on Hybrid CV-DV Quantum Computers

Zihan Chen, Jiakang Li, Minghao Guo +7 more·May 19, 2025

This paper introduces Genesis, the first compiler designed to support Hamiltonian Simulation on hybrid continuous-variable (CV) and discrete-variable (DV) quantum computing systems. Genesis is a two-level compilation system. At the first level, it de...

Computer SciencePhysics

Parametric Stability Analysis for Circuit Quantum Electrodynamical Hardwares

Maria Gabriela Boada, Andrea Delgado, Jose Morales Escalante·May 19, 2025

The transmon qubit, essential to quantum computation, exhibits disordered dynamics under strong parametric drives, critical to its control. We present a combined theoretical and numerical study of stability regions in circuit QED using Floquet theory...

Physics

Joint Optimization of Routing and Purification to Meet Fidelity Targets in Quantum Networks

Gongyu Ni, Holger Claussen, Lester Ho·May 18, 2025

Quantum networks rely on high-fidelity entanglement links, but achieving target fidelity often increases latency and Bell pair consumption due to purification. This paper proposes a cost-based scheduler that jointly optimizes path selection and purif...

Quantum Physics

Learning to Program Quantum Measurements for Machine Learning

S. Y. Chen, H. Tseng, Hsin-Yi Lin +1 more·May 18, 2025

The rapid advancements in quantum computing (QC) and machine learning (ML) have sparked significant interest, driving extensive exploration of quantum machine learning (QML) algorithms to address a wide range of complex challenges. The development of...

Computer SciencePhysics

Entanglement Request Scheduling in Quantum Networks Using Deep Q-Network

Gongyu Ni, Lester T. W. Ho, Holger Claussen·May 18, 2025

In this paper, a novel Deep Q-Network (DQN) based scheduling method to optimize delay time and fairness among entanglement requests in quantum repeater networks is proposed. The scheduling of requests determines which pairs of end nodes should be ent...

Computer SciencePhysics

Variational quantum simulation of a nonadditive relaxation dynamics in a qubit coupled to a finite-temperature bath

Lucas Q. Galvão, Clebson Cruz, Antonio Cesar do Prado Rosa Junior +1 more·May 17, 2025

In this paper, we present an application of the variational quantum simulation (VQS) framework to capture finite-temperature open-system dynamics on near-term quantum hardware. By embedding the generalized amplitude-damping channel into the VQS algor...

Physics

Q-Policy: Quantum-Enhanced Policy Evaluation for Scalable Reinforcement Learning

Kalyan Cherukuri, Aarav Lala, Yash Yardi·May 17, 2025

We propose Q-Policy, a hybrid quantum-classical reinforcement learning (RL) framework that mathematically accelerates policy evaluation and optimization by exploiting quantum computing primitives. Q-Policy encodes value functions in quantum superposi...

Computer SciencePhysics

Unbiased observable estimation with approximate channels in fault-tolerant quantum computation

Dmitrii Khitrin, Kenneth R. Brown, Abhinav Anand·May 16, 2025

Unitary errors, such as those arising from fault-tolerant compilation of quantum algorithms, systematically bias observable estimates. Correcting this bias typically requires additional resources, such as an increased number of non-Clifford gates. In...

Quantum Physics

Walsh-Floquet Theory of Periodic Kick Drives

James Walkling, Marin Bukov·May 16, 2025

Periodic kick drives are ubiquitous in digital quantum control, computation, and simulation, and are instrumental in studies of chaos and thermalization for their efficient representation through discrete gates. However, in the commonly used Fourier ...

Quantum Physicscond-mat.othercond-mat.quant-gas

TensorMixedStates: a Julia library for simulating pure and mixed quantum states using matrix product states

J'erome Houdayer, G. Misguich·May 16, 2025

We introduce TensorMixedStates, a Julia library built on top of ITensor which allows the simulation of quantum systems in presence of dissipation using matrix product states (MPS). It offers three key features: i) it implements the MPS representation...

Physics

Accelerating Parameter Initialization in Quantum Chemical Simulations via LSTM-FC-VQE

Ran-Yu Chang, Yu-Cheng Lin, Pei-Che Hsu +2 more·May 16, 2025

Variational Quantum Eigensolver (VQE) is a leading algorithm for quantum chemistry on near-term devices, but its performance is often limited by inefficient parameter initialization, which leads to slow convergence and high computational overhead. Wh...

PhysicsComputer Science

Digital Quantum Simulation of Squeezed States via Enhanced Bosonic Encoding and its Demonstration With Superconducting Qubits

Hengyue Li, Yusheng Yang, Zhe-Hui Wang +6 more·May 16, 2025

We present a fully digital approach for simulating single‐mode squeezed states using an enhanced bosonic encoding strategy on a circuit model, and demonstrate it on a superconducting quantum processor through a cloud platform. By mapping up to 2n$2^{...

Physics

On the quantum computational complexity of classical linear dynamics with geometrically local interactions: Dequantization and universality

Kazuki Sakamoto, Keisuke Fujii·May 15, 2025

The simulation of large-scale classical systems in exponentially small space on quantum computers has gained attention. The prior work demonstrated that a quantum algorithm offers an exponential speedup over any classical algorithm in simulating clas...

Quantum PhysicsComplexity

Reciprocal Floquet thermalization in one-dimensional Rydberg atom array

Yunhui He, Yuechun Jiao, Jianming Zhao +1 more·May 15, 2025

Periodically driven Floquet quantum systems hold great promise for engineering exotic quantum phases and matter, but are often limited by rapid thermalization. In this work, we propose and demonstrate a square-wave-modulated Floquet engineering proto...

Quantum Physics

Two-local modifications of SYK model with quantum chaos

Masanori Hanada, Sam van Leuven, Onur Oktay +1 more·May 15, 2025

The Sachdev--Ye--Kitaev (SYK) model may provide us with a good starting point for the experimental study of quantum chaos and holography in the laboratory. Still, the four-local interaction of fermions makes quantum simulation challenging, and it wou...

Quantum Physicscond-mat.dis-nncond-mat.str-elhep-th

Spectral quantum algorithm for passive scalar transport in shear flows

Philip R. Pfeffer, Peter Brearley, Sylvain Laizet +1 more·May 15, 2025

The mixing of scalar substances in fluid flows by stirring and diffusion is ubiquitous in natural flows, chemical engineering, and microfluidic drug delivery. Here, we present a spectral quantum algorithm for scalar mixing by solving the advection–di...

MedicinePhysics
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