Quantum Brain

Papers

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

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27,548

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1,041

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Research Volume

12,910 papers in 12 months (-5% vs prior quarter)

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

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2,459 papers found

Deterministic single-photon source over the terahertz regime

Caspar Groiseau, Miguel Á. Martínez-García, Diego Martín-Cano +1 more·Sep 30, 2025

We propose a deterministic single-photon source in the terahertz (THz) regime, triggered by a sequence of coherent optical pulses. The scheme leverages the permanent dipole moment of a single-polar quantum emitter to induce THz transitions between op...

Quantum PhysicsMesoscale Physicsphysics.optics

Robust NbN on Si-SiGe hybrid superconducting-semiconducting microwave quantum circuit

Paniz Foshat, Samane Kalhor, Shima Poorgholam-khanjari +3 more·Sep 30, 2025

Advancing large-scale quantum computing requires superconducting circuits that combine long coherence times with compatibility with semiconductor technology. We investigate niobium nitride (NbN) coplanar waveguide resonators integrated with Si/SiGe q...

Quantum Physicscond-mat.mtrl-scics.AREmerging Tech

PhotonIDs: ML-Powered Photon Identification System for Dark Count Elimination

Karl C. Linne, Sho Uemura, Yue Ji +6 more·Sep 30, 2025

Reliable single photon detection is the foundation for practical quantum communication and networking. However, today's superconducting nanowire single photon detector(SNSPD) inherently fails to distinguish between genuine photon events and dark coun...

Quantum Physics

Hybrid Quantum-Classical Optimisation of Traveling Salesperson Problem

Christos Lytrosyngounis, Ioannis Lytrosyngounis·Sep 30, 2025

The Traveling Salesperson Problem (TSP), a quintessential NP-hard combinatorial optimisation challenge, is vital for logistics and network design but limited by exponential complexity in large instances. We propose a hybrid quantum-classical framewor...

Quantum Physicscs.LG

Dynamics of Majorana zero modes across hybrid Kitaev chain

Rajiv Kumar, Rohit Kumar Shukla, Levan Chotorlishvili +1 more·Sep 30, 2025

The Kitaev chain has been extensively explored in the context of uniform couplings, with studies focusing either on purely nearest-neighbor interactions or on systems dominated by long-range superconducting pairing. Building on these investigations, ...

Quantum Physics

Toward Quantum-Enabled Biomarker Discovery: An Outlook from Q4Bio

Dhirpal Shah, Mariesa Teo, Ryan A. Robinett +12 more·Sep 30, 2025

We present a case study and forward-looking perspective on co-design for hybrid quantum-classical algorithms, centered on the goal of empirical quantum advantage (EQA), which we define as a measurable performance gain using quantum hardware over stat...

Quantum Physics

Perturbation theory, irrep truncations, and state preparation methods for quantum simulations of SU(3) lattice gauge theory

Praveen Balaji, Cianan Conefrey-Shinozaki, Patrick Draper +4 more·Sep 30, 2025

We study methods for efficient preparation of approximate ground states of $SU(3)$ lattice gauge theory on quantum hardware. Working in a variant of the electric basis, we introduce a refinement of the irrep truncation based on the energy density of ...

hep-lathep-phQuantum Physics

Dynamical Acoustic Control of Resonance Fluorescence from a Strongly Driven Two-Level System

Yuan Zhan, Zixuan Wang, Richard P. Mirin +2 more·Sep 30, 2025

Resonance fluorescence from a single two-level system is a cornerstone of quantum optics. In the strong driving regime, its emission spectrum exhibits the iconic Mollow triplet, with each spectral component corresponding to a transition between disti...

Quantum Physics

Hybrid Schemes of NIST Post-Quantum Cryptography Standard Algorithms and Quantum Key Distribution for Key Exchange and Digital Signature

Abel C. H. Chen·Sep 30, 2025

Since the security of post-quantum cryptography (PQC) algorithms is based on the hardness of mathematical problems, while the security of quantum key distribution (QKD) relies on the fundamental principles of quantum physics, each approach possesses ...

Cryptographycs.PFQuantum Physics

Experimental demonstration of boson sampling as a hardware accelerator for monte carlo integration

Malaquias Correa Anguita, Teun Roelink, Sara Marzban +3 more·Sep 29, 2025

We present an experimental demonstration of boson sampling as a hardware accelerator for Monte Carlo integration. Our approach leverages importance sampling to factorize an integrand into a distribution that can be sampled using quantum hardware and ...

Quantum Physicsphysics.atm-clusphysics.comp-phphysics.optics

Non-destructive optical read-out and manipulation of circular Rydberg atoms

Yohann Machu, Andrés Durán-Hernández, Gautier Creutzer +4 more·Sep 29, 2025

Among the thriving quantum computation and quantum simulation platforms based on arrays of Rydberg atoms, those using circular Rydberg atoms are particularly promising. These atoms uniquely combine the strong dipole-dipole interactions typical of Ryd...

Atomic Physicscond-mat.quant-gasQuantum Physics

Nonclassical phonon pair

Yu Wang, Zhen Shen, Mai Zhang +6 more·Sep 29, 2025

Quantum-correlated photon pairs are crucial resources for modern quantum information science. Similarly, the reliable generation of nonclassical phonon pairs is vital for advancing engineerable solid-state quantum devices and hybrid quantum networks ...

Quantum Physics

Magnon squeezing near a quantum critical point in a cavity-magnon-qubit system

Gang Liu, Gen Li, Rong-Can Yang +2 more·Sep 29, 2025

Preparing magnon nonclassical states is a central topic in the study of quantum magnonics. Here we propose to generate magnon squeezed states in a hybrid cavity-magnon-qubit system by engineering an effective Rabi-type magnon-qubit interaction. This ...

Quantum PhysicsMesoscale Physicsphysics.optics

Quantum Approximate Optimization Algorithm: Performance on Simulators and Quantum Hardware

Abyan Khabir Irfan, Chansu Yu·Sep 29, 2025

Running quantum circuits on quantum computers does not always generate "clean" results, unlike on a simulator, as noise plays a significant role in any quantum device. To explore this, we experimented with the Quantum Approximate Optimization Algorit...

Quantum PhysicsEmerging Tech

Resource-efficient universal photonic processor based on time-multiplexed hybrid architectures

Jonas Lammers, Laura Ares, Federico Pegoraro +4 more·Sep 26, 2025

For the ever-growing field of quantum information processing, large-scale, efficient multi-port interferometers serving as photonic processors are required. In this context, the suitability of quantum walks as the interferometric base for universal c...

Quantum Physics

Multi-channel convolutional neural quantum embedding

Yujin Kim, Changjae Im, Taehyun Kim +2 more·Sep 26, 2025

Classification using variational quantum circuits is a promising frontier in quantum machine learning. Quantum supervised learning (QSL) applied to classical data using variational quantum circuits involves embedding the data into a quantum Hilbert s...

Quantum Physicscs.LG

Hybrid SU(1,1) interferometry in optomechanics

Chao Meng, Emil Zeuthen, Polina R. Sharapova·Sep 26, 2025

In non-degenerate SU(1,1) interferometers, beam splitters are replaced by two-mode squeezers, enabling sub-shot-noise sensitivity without input squeezing and robustness to detection losses by quantum entanglement. We propose a hybrid implementation i...

Quantum Physicsphysics.optics

Observation of resonant monopole-dipole energy transfer between Rydberg atoms and polar molecules

J. Zou, R. R. W. Wang, R. González-Férez +2 more·Sep 25, 2025

Resonant energy transfer (RET), between equal parity 1s65s$^3\mathrm{S}_1$ and 1s66s$^3\mathrm{S}_1$ Rydberg levels in helium has been observed in low-temperature ($\sim80$ mK) collisions with ammonia molecules which undergo inversion transitions in ...

Atomic Physicscond-mat.quant-gasQuantum Physics

Towards a user-centric HPC-QC environment

Aleksander Wennersteen, Matthieu Moreau, Aurelien Nober +1 more·Sep 24, 2025

Robust execution environments are important for addressing key challenges in quantum computing, such as application development, portability, and reproducibility, and help unlock the development of modular quantum programs, driving forward hybrid qua...

Quantum Physicscs.SE

Piezomechanical scattering loss in electro-optics quantum transducers

Mai Zhang, Xin-Biao Xu, Ming Li +3 more·Sep 24, 2025

Quantum transduction between microwave and optical photons is essential for building scalable quantum networks, with electro-optics conversion emerging as a promising approach. Recent experiments, however, observe significant quality factor degradati...

Quantum Physicsphysics.optics
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