Quantum Brain

Papers

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

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28,250

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22

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13,405 papers in 12 months (-22% vs prior quarter)

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28,250 papers found

Floquet Diamond Sensor with Optimal Precision

Qi-Tao Duan, Teng Li, Si-Qi Chen +2 more·Oct 4, 2025

The diamond sensor has emerged as a promising platform for quantum sensing, enabling the estimation of physical quantities -- such as microwave~(MW) field -- with precision unattainable by classical counterpart. However, traditional diamond sensors s...

Quantum Physics

Quantum algorithm for Electromagnetic Field Analysis

Hiroyuki Tezuka, Yuki Sato·Oct 4, 2025

Partial differential equations (PDEs) are central to computational electromagnetics (CEM) and photonic design, but classical solvers face high costs for large or complex structures. Quantum Hamiltonian simulation provides a framework to encode PDEs i...

Quantum Physics

Reversing Annealing-Induced Optical Loss in Diamond Microcavities

Vinaya K. Kavatamane, Natalia C. Carvalho, Ahmas El-Hamamsy +2 more·Oct 4, 2025

A key challenge for quantum photonic technologies based on spin qubits is the creation of optically active defects in photonic resonators. Several of the most promising defects for quantum applications are hosted in diamond, and are commonly created ...

physics.opticsQuantum Physics

XG-Attention-WGAN PIC: Utilizing XGboost-Attention-WGAN for Photonics Integrated Circuit Design

Mahmood Hasani, Atena Shircharandabi, Masiha Rabiei +4 more·Oct 4, 2025

Photonic Integrated Circuits (PICs) are fundamental for optical computing, communication, quantum information processing, and precision sensing. However, traditional numerical simulations for designing PIC components are computationally intensive and...

Physics

Rethinking Services in the Quantum Age: The SOQ Paradigm

J. García-Alonso, E. Moguel, J. Alvarado-Valiente +11 more·Oct 4, 2025

Quantum computing is rapidly progressing from theoretical promise to practical implementation, offering significant computational advantages for tasks in optimization, simulation, cryptography, and machine learning. However, its integration into real...

Computer Science

High-spin magnetic ground states of neutral dopant clusters in semiconductors

Rhine Samajdar, Haonan Zhou, R. N. Bhatt·Oct 3, 2025

High-spin states hold significant promise for classical and quantum information storage and emerging magnetic memory technologies. Here, we present a systematic framework for engineering such high-spin magnetic states in dopant clusters formed from s...

Mesoscale Physicscond-mat.mtrl-scicond-mat.stat-mechQuantum Physics

Next Generation Ta-STJ Sensor Arrays for BSM Physics Searches

Joseph P. T. Templet, Spencer Fretwell, Andrew Marino +9 more·Oct 3, 2025

The Beryllium Electron capture in Superconducting Tunnel junctions (BeEST) experiment uses superconducting tunnel junction (STJ) sensors to search for physics beyond the standard model (BSM) with recoil spectroscopy of the $\mathbf{^7}$Be EC decay in...

physics.ins-detnucl-exQuantum Physics

Optimising quantum data hiding

Francesco Anna Mele, Ludovico Lami·Oct 3, 2025

Quantum data hiding is the existence of pairs of bipartite quantum states that are (almost) perfectly distinguishable with global measurements, yet close to indistinguishable when only measurements implementable with local operations and classical co...

Quantum Physics

Bloch Oscillations and Landau-Zener Transitions in Flat-Band Lattices with Quadratic and Linear Band Touchings

Chenhaoyue Wang, Carlos J. Garcia-Cervera, Amartya S. Banerjee·Oct 3, 2025

Bloch oscillations (BOs) describe the coherent oscillatory motion of electrons in a periodic lattice under a constant external electric field. Deviations from pure harmonic wave packet motion or irregular Bloch oscillations can occur due to Zener tun...

cond-mat.mtrl-sciMesoscale PhysicsMathematical PhysicsQuantum Physics

A Quantum-Secure Voting Framework Using QKD, Dual-Key Symmetric Encryption, and Verifiable Receipts

Taha M. Mahmoud, Naima Kaabouch·Oct 3, 2025

Electronic voting systems face growing risks from cyberattacks and data breaches, which are expected to intensify with the advent of quantum computing. To address these challenges, we introduce a quantum-secure voting framework that integrates Quantu...

Quantum PhysicsCryptography

The quantum smooth label cover problem is undecidable

Eric Culf, Kieran Mastel, Connor Paddock +1 more·Oct 3, 2025

We show that the quantum smooth label cover problem is undecidable and RE-hard. This sharply contrasts the quantum unique label cover problem, which can be decided efficiently by a result of Kempe, Regev, and Toner (FOCS'08). On the other hand, our r...

Quantum Physics

Single-Spin Nitrogen-Vacancy Magnetometer with Enhanced Static Field Sensitivity

Vinaya K. Kavatamane, Dewen Duan, Hadi Zadeh-Haghighi +2 more·Oct 3, 2025

Precision sensing and imaging of weak static magnetic fields are crucial for a variety of emerging nanoscale applications. While nitrogen-vacancy (NV) centers in diamond provide exceptional AC magnetic field sensitivity with nanoscale spatial resolut...

Quantum Physics

Optimizing and benchmarking the computation of the permanent of general matrices

Cassandra Masschelein, Michelle Richer, Paul W. Ayers·Oct 3, 2025

Evaluating the permanent of a matrix is a fundamental computation that emerges in many domains, including traditional fields like computational complexity theory, graph theory, many-body quantum theory and emerging disciplines like machine learning a...

Quantum Physicscs.MS

Coherent matter wave emission from an atomtronic transistor

Sasanka Dowarah, Mengxin Du, Alan Zanders +3 more·Oct 3, 2025

The atomtronic matter-wave triple-well transistor is theoretically predicted to exhibit current gain and act as a coherent matter-wave emitter. In this work, we investigate the dynamics of an atomtronic transistor composed of a triple-well potential ...

cond-mat.quant-gasQuantum Physics

Quantum feature-map learning with reduced resource overhead

Jonas Jäger, Philipp Elsässer, Elham Torabian·Oct 3, 2025

Current quantum computers require algorithms that use limited resources economically. In quantum machine learning, success hinges on quantum feature maps, which embed classical data into the state space of qubits. We introduce Quantum Feature-Map Lea...

Quantum Physicscs.LG

Plugging Leaks in Fault-Tolerant Quantum Computation and Verification

Theodoros Kapourniotis, Dominik Leichtle, Luka Music +1 more·Oct 3, 2025

With the advent of quantum cloud computing, the security of delegated quantum computation has become of utmost importance. While multiple statistically secure blind verification schemes in the prepare-and-send model have been proposed, none of them a...

Quantum Physics

Absence of quantum Darwinism as a resource in secure quantum communication and computation

Bishal Kumar Das, Sourav Manna, Vaibhav Madhok·Oct 3, 2025

The emergence of classical world from underlying quantum mechanics is characterized by not only vanishing quantum correlations but also an unfolding of objectivity also known as quantum Darwinism. We show that the absence of this objectivity has a qu...

Quantum Physics

Cheat-Penalised Quantum Weak Coin-Flipping

Atul Singh Arora, Carl A. Miller, Mauro E. S. Morales +1 more·Oct 3, 2025

Coin-flipping is a fundamental task in two-party cryptography where two remote mistrustful parties wish to generate a shared uniformly random bit. While quantum protocols promising near-perfect security exist for weak coin-flipping -- when the partie...

Quantum PhysicsCryptography

The top quark in 2025 -- International year of Quantum Science and Technology

J. A. Aguilar-Saavedra·Oct 3, 2025

Since its discovery at the Tevatron in 1995, the top quark has been extensively studied due to its unique properties. We discuss how the remarkable progress in top-quark physics has opened the possibility of using the top quark as a tool to test quan...

hep-phhep-exQuantum Physics

Mechanisms for Quantum Advantage in Global Optimization of Nonconvex Functions

Dylan Herman, Guneykan Ozgul, Anuj Apte +4 more·Oct 3, 2025

We present new theoretical mechanisms for quantum speedup in the global optimization of nonconvex functions, expanding the scope of quantum advantage beyond traditional tunneling-based explanations. As our main building-block, we demonstrate a rigoro...

Quantum PhysicsData StructuresMathematical Physicsmath.OC
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