Quantum Brain

Papers

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

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12,598 papers in 12 months (-14% vs prior quarter)

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1,703 papers found

Generation of high-OAM ultraviolet twisted light for RF-photoinjector applications

A. S. Dyatlov, D. M. Dolgintsev, V. V. Gerasimov +7 more·Dec 9, 2025

The generation of relativistic vortex electron beams via photoemission requires ultraviolet laser beams with well-controlled orbital angular momentum (OAM) and compatibility with radio-frequency (RF) photoinjector drive-laser systems. High-OAM vortex...

Quantum Physicsphysics.acc-phphysics.optics

Deterministic Quantum Communication Between Fixed-Frequency Superconducting Qubits via Broadband Resonators

Takeaki Miyamura, Zhiling Wang, Kohei Matsuura +5 more·Dec 9, 2025

Quantum communication between remote chips is essential for realizing large-scale superconducting quantum computers. For such communication, itinerant microwave photons propagating through transmission lines offer a promising approach. However, demon...

Quantum Physics

Direct Generation of an Array with 78400 Optical Tweezers Using a Single Metasurface

Yuqing Wang, Yuxuan Liao, Tao Zhang +9 more·Dec 9, 2025

Scalability remains a major challenge in building practical fault-tolerant quantum computers. Currently, the largest number of qubits achieved across leading quantum platforms ranges from hundreds to thousands. In atom arrays, scalability is primaril...

cond-mat.quant-gasQuantum Physics

Moire-Engineered Ferroelectric Transistors for Nearly Trap-free, Low-Power and Non-Volatile 2D Electronics

Arup Singha, Shaili Sett, Kenji Watanabe +3 more·Dec 8, 2025

Long-range moire patterns in twisted WSe2 enable a built-in, moire-length-scale ferroelectric polarization that can be directly harnessed in electronic devices. Such a built-in ferroic landscape offers a compelling means to enable ultralow-voltage an...

cond-mat.mtrl-sciMesoscale Physicscond-mat.str-elphysics.app-ph

Coherent and compact van der Waals transmon qubits

Jesse Balgley, Jinho Park, Xuanjing Chu +9 more·Dec 8, 2025

State-of-the-art superconducting qubits rely on a limited set of thin-film materials. Expanding their materials palette can improve performance, extend operating regimes, and introduce new functionalities, but conventional thin-film fabrication hinde...

Quantum PhysicsMesoscale Physicscond-mat.mtrl-scicond-mat.supr-con

F2: Offline Reinforcement Learning for Hamiltonian Simulation via Free-Fermionic Subroutine Compilation

Ethan Decker, Christopher Watson, Junyu Zhou +5 more·Dec 8, 2025

Compiling shallow and accurate quantum circuits for Hamiltonian simulation remains challenging due to hardware constraints and the combinatorial complexity of minimizing gate count and circuit depth. Existing optimization method pipelines rely on han...

Quantum Physicscond-mat.mtrl-sci

RuleSet Generation Framework for Application Layer Integration in Quantum Internet

Rei Kawano, Shin Nishio, Hideaki Kawaguchi +2 more·Dec 8, 2025

Layered architectures for the Quantum Internet have been proposed, inspired by that of the classical Internet, which has demonstrated high maintainability even in large-scale systems. While lower layers in the Quantum Internet, such as entanglement g...

Quantum Physics

33 Gbit/s source-device-independent quantum random number generator based on heterodyne detection with real-time FPGA-integrated extraction

Marius Cizauskas, Hamid Tebyanian, Mark Fox +3 more·Dec 8, 2025

We present a high-speed continuous-variable quantum random number generator (QRNG) based on heterodyne detection of vacuum fluctuations. The scheme follows a source-device-independent (SDI) security model in which the entropy originates from quantum ...

Quantum Physics

Enhancing ground-state interaction strength of neutral atoms via Floquet stroboscopic dynamics

Y. Wei, M. Artoni, G. C. La Rocca +2 more·Dec 7, 2025

Neutral atom systems are promising platforms for quantum simulation and computation, owing to their long coherence times. However, their intrinsically weak ground-state interactions pose a major limitation to the advancement of scalable quantum simul...

Quantum Physics

High-harmonic generation driven by temporal-mode quantum states of light

Juan M. González-Monge, Johannes Feist·Dec 7, 2025

We develop a theoretical framework for high-harmonic generation (HHG) driven by quantum states of light based on a temporal-mode expansion of the electromagnetic field. This approach extends previous single plane-wave mode treatments to realistic pul...

Quantum PhysicsAtomic Physics

Mitigating the Transition of SiV$^-$ in Diamond to an Optically Dark State

Manuel Rieger, Rubek Poudel, Tobias Waldmann +7 more·Dec 6, 2025

Negatively charged silicon vacancy centers in diamond (SiV$^-$) are promising for quantum photonic technologies. However, when subject to resonant optical excitation, they can inadvertently transfer into a zero-spin optically dark state. We show that...

Quantum PhysicsMesoscale Physicscond-mat.mtrl-sciphysics.optics

Anubuddhi: A Multi-Agent AI System for Designing and Simulating Quantum Optics Experiments

S. K. Rithvik·Dec 6, 2025

We present Anubuddhi, a multi-agent AI system that designs and simulates quantum optics experiments from natural language prompts without requiring specialized programming knowledge. The system composes optical layouts by arranging components from a ...

AIcs.LGQuantum Physics

Deterministic and Universal Frequency-Bin Gate for High-Dimensional Quantum Technologies

Xin Chen·Dec 5, 2025

High-dimensional photonic systems access large Hilbert spaces for quantum information processing. They offer proven advantages in quantum computation, communication, and sensing. However, implementing scalable, low-loss unitary gates across many mode...

Quantum Physics

Collective three-body interactions enable a robust quantum speedup

Haoqing Zhang, Anjun Chu, Chengyi Luo +4 more·Dec 5, 2025

We show that collective three-body interactions (3BIs), implementable with $N$ atoms loaded inside an optical cavity, offer a significant advantage for preparing complex multipartite entangled states. Firstly, they enable a speedup of order $\sim N$ ...

Quantum Physics

Randomness quantification in spontaneous emission

Chenxu Li, Shengfan Liu, Xiongfeng Ma·Dec 5, 2025

Quantum coherence serves as a fundamental resource for generating intrinsic randomness, yet the quantification of randomness in quantum random number generators (QRNGs) based on spontaneous emission has remained largely phenomenological. Existing ran...

Quantum Physics

Quenching dynamics of vortex in spin-orbit coupled Bose-Einstein condensates

Juan Wang, Zhenze Fan, Yan Li·Dec 5, 2025

We investigate the ground states and rich dynamics of vortices in spin-orbit coupled Bose-Einstein condensates (BEC) subject to position-dependent detuning. Such a detuning plays the role of an effective rotational frequency, causing the generation o...

cond-mat.quant-gasAtomic PhysicsQuantum Physics

Squeezing Classical Antiferromagnets into Quantum Spin Liquids via Global Cavity Fluctuations

Charlie-Ray Mann, Mark A. Oehlgrien, Błażej Jaworowski +4 more·Dec 5, 2025

Cavity quantum electrodynamics with atomic ensembles is typically associated with collective spin phenomena, such as superradiance and spin squeezing, in which the atoms evolve collectively as a macroscopic spin ($S\sim N/2$) on the Bloch sphere. Sur...

Quantum Physicscond-mat.quant-gascond-mat.str-elAtomic Physics

Pump Free Microwave-Optical Quantum Transduction

Fangxin Li, Jaesung Heo, Zhaoyou Wang +3 more·Dec 4, 2025

Distributed quantum computing involves superconducting computation nodes operating at microwave frequencies, which are connected by long-distance transmission lines that transmit photons at optical frequencies. Quantum transduction, which coherently ...

Quantum Physics

Operator Formalism for Laser-Plasma Wakefield Acceleration

Mostafa Behtouei, Carlos Salgado Lopez, Giancarlo Gatti·Dec 4, 2025

In this paper, we develop an operator-based framework for laser--plasma wakefield acceleration (LPWA) in capillary discharges, providing a compact and systematic description of the coupled dynamics of laser fields and plasma response. The formalism e...

physics.plasm-phMathematical Physicsphysics.acc-phQuantum Physics

Watt-level coherent microwave emission from dissipation engineered solid-state quantum batteries

Yuanjin Wang, Hao Wu, Mark Oxborrow +1 more·Dec 4, 2025

Recently proposed metastability-induced quantum batteries have shown particular promise for coherent microwave generation. However, achieving high-power coherent microwave generation in quantum batteries remains fundamentally challenging due to quant...

Quantum Physicsphysics.app-ph
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