Quantum Brain

Papers

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

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27,086

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12,591 papers in 12 months (-14% vs prior quarter)

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1,703 papers found

Scalable quantum computation of Quantum Electrodynamics beyond one spatial dimension

Zong-Gang Mou, Bipasha Chakraborty·Oct 31, 2025

In the Hamiltonian formulation, Quantum Field Theory calculations scale exponentially with spatial volume, making real-time simulations intractable on classical computers and motivating quantum computation approaches. In Hamiltonian quantisation, bos...

hep-lathep-thQuantum Physics

The role of entanglement in energy-restricted communication and randomness generation

Carles Roch I Carceller, Armin Tavakoli·Oct 31, 2025

A promising platform for semi-device-independent quantum information is prepare-and-measure experiments restricted only by a bound on the energy of the communication. Here, we investigate the role of shared entanglement in such scenarios. For classic...

Quantum Physics

Long-lived giant circular Rydberg atoms at room temperature

Einius Pultinevicius, Aaron Götzelmann, Fabian Thielemann +2 more·Oct 31, 2025

Stability achieved by large angular momentum is ubiquitous in nature, with examples ranging from classical mechanics, over optics and chemistry, to nuclear physics. In atoms, angular momentum can protect excited electronic orbitals from decay due to ...

Atomic Physicscond-mat.quant-gasQuantum Physics

Optical Vortices: Revolutionizing the field of linear and nonlinear optics

Bikash K. Das, Camilo Granados, Marcelo F. Ciappina·Oct 31, 2025

Light is the fundamental medium through which we perceive the world around us. In the modern era, light can not only be used in its raw form but can also be used as a versatile tool. Generally, light fields carry energy and momentum (both linear and ...

physics.opticsQuantum Physics

High-Q microresonators unveil quantum rare events

Sricharan Raghavan-Chitra, Arghadip Koner, Joel Yuen-Zhou·Oct 30, 2025

Classical linear optics posits that at sufficiently low intensities, light propagation in dielectric media is governed solely by their linear susceptibilities. Here, we demonstrate a departure from this paradigm in high-Q microresonators, where prolo...

physics.opticsQuantum Physics

Electron juggling: Approaching the atomic physics limit of the attempt rate in trapped ion photonic interconnects

I. D. Moore, B. M. White, B. Graner +1 more·Oct 30, 2025

Photonic interconnects are a key technology for scaling up atomic based quantum computers. By facilitating the connection of multiple systems, high-performance modular quantum processing units may be constructed to perform deeper and more useful algo...

Quantum PhysicsAtomic Physics

Tunable frequency conversion and comb generation with a superconducting artificial atom

Fahad Aziz, Zhengqi Niu, Tzu-Yen Hsieh +12 more·Oct 30, 2025

We investigate the power spectral density emitted by a superconducting artificial atom coupled to the end of a semi-infinite transmission line and driven by two continuous radio-frequency fields. In this setup, we observe the generation of multiple f...

Quantum Physics

Wavefront Curvature and Transverse Atomic Motion in Time-Resolved Atom Interferometry: Impact and Mitigation

Noam Mouelle, Jeremiah Mitchell, Valerie Gibson +1 more·Oct 30, 2025

Time-resolved atom interferometry, as employed in applications such as gravitational wave detection and searches for ultra-light dark matter, requires precise control over systematic effects. In this work, we investigate phase noise arising from shot...

Atomic Physicsastro-ph.IMcond-mat.quant-gashep-ex

FlowQ-Net: A Generative Framework for Automated Quantum Circuit Design

Jun Dai, Michael Rizvi-Martel, Guillaume Rabusseau·Oct 30, 2025

Designing efficient quantum circuits is a central bottleneck to exploring the potential of quantum computing, particularly for noisy intermediate-scale quantum (NISQ) devices, where circuit efficiency and resilience to errors are paramount. The searc...

Quantum Physicscs.LG

A Non-Variational Quantum Approach to the Job Shop Scheduling Problem

Miguel Angel Lopez-Ruiz, Emily L. Tucker, Emma M. Arnold +3 more·Oct 30, 2025

Quantum heuristics offer a potential advantage for combinatorial optimization but are constrained by near-term hardware limitations. We introduce Iterative-QAOA, a variant of QAOA designed to mitigate these constraints. The algorithm combines a non-v...

Quantum PhysicsEmerging Tech

Generation and detection of squeezed states via a synchronously pumped optical parametric oscillator

Edoardo Suerra, Samuele Altilia, Stefano Olivares +7 more·Oct 30, 2025

A synchronously pumped optical parametric oscillator (SPOPO) operating at 93 MHz is used to generate squeezed states at 1035 nm. The system features a counter-propagating beam at the same wavelength as the quantum state, which simultaneously actively...

Quantum Physicsphysics.optics

QuantumBench: A Benchmark for Quantum Problem Solving

Shunya Minami, Tatsuya Ishigaki, Ikko Hamamura +6 more·Oct 30, 2025

Large language models are now integrated into many scientific workflows, accelerating data analysis, hypothesis generation, and design space exploration. In parallel with this growth, there is a growing need to carefully evaluate whether models accur...

AIcs.CLcs.LGQuantum Physics

QCoder Benchmark: Bridging Language Generation and Quantum Hardware through Simulator-Based Feedback

Taku Mikuriya, Tatsuya Ishigaki, Masayuki Kawarada +9 more·Oct 30, 2025

Large language models (LLMs) have increasingly been applied to automatic programming code generation. This task can be viewed as a language generation task that bridges natural language, human knowledge, and programming logic. However, it remains und...

cs.CLcs.PLQuantum Physics

Photoelectric detection of single spins in diamond by optically controlled discharge of long-lived trap states

A. C. Ulibarri, D. J. McCloskey, D. Wang +3 more·Oct 29, 2025

Electrical detection methods for solid-state spins are attractive for quantum technologies, being readily chip-scalable and not subject to the small photon budgets of single emitters. However, realising electrical spin readout in wide-bandgap materia...

Quantum Physics

Next-generation interferometry with gauge-invariant linear optical scatterers

Christopher R. Schwarze, Anthony D. Manni, David S. Simon +2 more·Oct 29, 2025

Measurement technology employing optical interference phenomena such as a fringe pattern or frequency shift has been evolving for more than a century. The systems are being designed better, and their components are being built better. But the major c...

physics.opticsQuantum Physics

Silicon-based Josephson junction field-effect transistors enabling cryogenic logic and quantum technologies

Yusheng Xiong, Kaveh Delfanazari·Oct 29, 2025

The continuous miniaturisation of metal-oxide-semiconductor field-effect transistors (MOSFETs) from long- to short-channel architectures has advanced beyond the predictions of Moore's Law. Continued advances in semiconductor electronics, even near cu...

eess.SYcs.ARQuantum Physics

Low-Gap Hf-HfOx-Hf Josephson Junctions for meV-Scale Particle Detection

Y. Balaji, M. Surendran, X. Li +7 more·Oct 29, 2025

Superconducting qubits have motivated the exploration of Josephson-junction technologies beyond quantum computing, with emerging applications in low-energy photon and phonon detection for astrophysics and dark matter searches. Achieving sensitivity a...

cond-mat.supr-conQuantum Physics

Gouy Phase-Related Effects in the Free-Space Optical Modulation of Free Electrons

Zhexin Zhao, Yiqi Fang, Mevlana Yunus Uludağ +1 more·Oct 28, 2025

Modulating the free-electron wave function with light brings new opportunities to create attosecond electron pulse trains, to probe the quantum coherence of systems with significantly improved spatial resolution, and to generate classical and non-cla...

physics.opticsQuantum Physics

Renormalization-group-based preparation of matrix product states on up to 80 qubits

Moritz Scheer, Alberto Baiardi, Elisa Bäumer Marty +2 more·Oct 28, 2025

A key challenge for quantum computers is the efficient preparation of many-body entangled states across many qubits. In this work, we demonstrate the preparation of matrix product states (MPS) using a renormalization-group(RG)-based quantum algorithm...

Quantum Physics

Fundamental limit on the heralded single photons' spectral brightness

Tse-Yu Lin, Wei-Kai Huang, Pei-Yu Tu +2 more·Oct 28, 2025

The heralded single photons' (HSPs) spectral brightness (SB) is defined as the generation rate per linewidth. As the generation rate of HSPs gets larger or the photons' linewidth becomes narrower, both of which are desirable in quantum information pr...

Quantum Physics
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