Quantum Brain

Papers

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

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27,548

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Research Volume

12,928 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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4,069 papers found

Control of valence-electron motion in Xe cations using the stimulated-Raman-adiabatic-passage technique

Miguel A. Alarcón, Karl Hauser, Nikolay V. Golubev·Oct 26, 2025

This work theoretically investigates possibilities of using the Stimulated Raman Adiabatic Passage (STIRAP) and its variants to control a coherent superposition of quantum states. We present a generalization of the so-called fractional STIRAP (f-STIR...

Quantum PhysicsAtomic Physicsphysics.optics

HPC-Driven Modeling with ML-Based Surrogates for Magnon-Photon Dynamics in Hybrid Quantum Systems

Jialin Song, Yingheng Tang, Pu Ren +8 more·Oct 25, 2025

Simulating hybrid magnonic quantum systems remains a challenge due to the large disparity between the timescales of the two systems. We present a massively parallel GPU-based simulation framework that enables fully coupled, large-scale modeling of on...

Quantum Physicscs.LGphysics.comp-ph

Harnessing Intrinsic Noise for Quantum Simulation of Open Quantum Systems

Sameer Dambal, Akira Sone, Yu Zhang·Oct 24, 2025

Simulating open quantum systems on quantum computers presents a fundamental challenge: open quantum dynamics are intrinsically nonunitary, whereas quantum computers operate through unitary evolution. Conventional approaches overcome this mismatch by ...

Quantum Physics

Electrical-control of third-order nonlinearity via Fano interference

Deniz Eren Mol, İbrahim Asrın Üzgüç, Ulaş Eyüpoğlu +6 more·Oct 23, 2025

Programmable photonic computers necessitate the integration of electrically-tunable compact components into the photonic devices. In the state-of-the-art photonic quantum computers~(PQCs), phase-shift and displacement gates can be implemented in an e...

physics.opticsphysics.app-phQuantum Physics

Hybrid Lattice Surgery: Non-Clifford Gates via Non-Abelian Surface Codes

Sheng-Jie Huang, Alison Warman, Sakura Schafer-Nameki +1 more·Oct 23, 2025

In universal fault-tolerant quantum computing, implementing logical non-Clifford gates often demands substantial spacetime resources for many error-correcting codes, including the high-threshold surface code. A critical mission for realizing large-sc...

Quantum Physicscond-mat.str-elhep-th

Optimal constant-cost implementations of Clifford operations using global interactions

Jonathan Nemirovsky, Lee Peleg, Amit Ben Kish +1 more·Oct 23, 2025

We investigate quantum circuits built from arbitrary single-qubit operations combined with programmable all-to-all multiqubit entangling gates that are native to, among other systems, trapped-ion quantum computing platforms. We report a constant-cost...

Quantum Physics

Co-Designing Quantum Codes with Transversal Diagonal Gates via Multi-Agent Systems

Xi He, Sirui Lu, Bei Zeng·Oct 23, 2025

Exact scientific discovery requires more than heuristic search: candidate constructions must be turned into exact objects and checked independently. We address this gap by extending TeXRA with an independent Lean 4 verification layer, turning it into...

Quantum PhysicsAIcs.CLMathematical Physics

Phenomenological Noise Models and Optimal Thresholds of the 3D Toric Code

Ji-Ze Xu, Yin Zhong, Miguel A. Martin-Delgado +2 more·Oct 23, 2025

Three-dimensional (3D) topological codes offer the advantage of supporting fault-tolerant implementations of non-Clifford gates, yet their performance against realistic noise remains largely unexplored. In this work, we focus on the paradigmatic 3D t...

Quantum Physicscond-mat.dis-nncond-mat.stat-mechcond-mat.str-el

Mitigating Coherent Errors through a Decoherence-Resistant Variational Framework employing Stabilizer State

Giovanni Di Bartolomeo, Giulio Crognaletti, Angelo Bassi +1 more·Oct 23, 2025

Stabilizer states are a central resource in quantum information processing, underpinning a wide range of applications. While they can be efficiently generated via Clifford circuits, the presence of coherent errors, such as small-angle miscalibrations...

Quantum Physics

Parametric phase modulation in superconducting circuits

Zhuang Ma, Xianke Li, Hongyi Shi +4 more·Oct 23, 2025

Parametric modulation, valued for its versatility, is widely employed in superconducting circuits for quantum simulations and high-fidelity two-qubit gates. Conventionally, the qubit coupling strength is determined by the amplitude of the parametric ...

Quantum Physics

Electronically-controlled one- and two-qubit gates for transmon quasicharge qubits

Nicholas M. Christopher, Deniz E. Stiegemann, Abhijeet Alase +1 more·Oct 23, 2025

Superconducting protected qubits aim to achieve sufficiently low error rates so as to allow realization of error-corrected, utility-scale quantum computers. A recent proposal encodes a protected qubit in the quasicharge degree of freedom of the conve...

Quantum PhysicsMesoscale Physicscond-mat.supr-con

Good quantum codes with addressable and parallelizable transversal non-Clifford gates

Virgile Guémard·Oct 22, 2025

In this work, we prove that for any $m>1$, there exists a family of good qudit quantum codes supporting transversal logical $\mathsf{C}^{m-1}\mathsf{Z}$ gates that can address specified logical qudits and be largely executed in parallel. Building on ...

Quantum Physicscs.IT

Quantum computation of molecular geometry via many-body nuclear spin echoes

C. Zhang, R. G. Cortiñas, A. H. Karamlou +320 more·Oct 22, 2025

Quantum-information-inspired experiments in nuclear magnetic resonance spectroscopy may yield a pathway towards determining molecular structure and properties that are otherwise challenging to learn. We measure out-of-time-ordered correlators (OTOCs)...

Quantum Physics

Hybrid Quantum-Classical Eigensolver with Real-Space Sampling and Symmetric Subspace Measurements

Lei Xu, Ling Wang·Oct 22, 2025

We propose a hybrid quantum-classical eigensolver to address the computational challenges of simulating strongly correlated quantum many-body systems, where the exponential growth of the Hilbert space and extensive entanglement render classical metho...

Quantum Physicscond-mat.str-el

Symmetry-accelerated classical simulation of Clifford-dominated circuits

Giulio Camillo, Filipa C. R. Peres, Markus Heinrich +1 more·Oct 21, 2025

Classical simulation of quantum circuits plays a crucial role in validating quantum hardware and delineating the boundaries of quantum advantage. Among the most effective simulation techniques are those based on the stabilizer extent, which quantifie...

Quantum Physics

Simple logical quantum computation with concatenated symplectic double codes

Noah Berthusen, Elijah Durso-Sabina·Oct 21, 2025

There have been significant recent advances in constructing theoretical and practical quantum error correcting codes that function well as quantum memories; however, performing fault-tolerant logical gates on these codes is less studied, and the prot...

Quantum Physics

Measurement-Based Fault-Tolerant Quantum Computation on High-Connectivity Devices: A Resource-Efficient Approach toward Early FTQC

Yohei Ibe, Yutaka Hirano, Yasuo Ozu +2 more·Oct 21, 2025

We propose a measurement-based FTQC (MB-FTQC) architecture for high-connectivity platforms such as trapped ions and neutral atoms. The key idea is to use verified logical ancillas combined with Knill's error-correcting teleportation, eliminating repe...

Quantum Physics

Optimal quantum learning in proximity to universality

Moein N. Ivaki, Matias Karjula, Tapio Ala-Nissila·Oct 21, 2025

The boundary between classically simulable and computationally superior quantum systems is fundamental to identifying true quantum advantage. We investigate this within the framework of quantum reservoir computing by introducing a tunable $N$-qubit r...

Quantum Physicscond-mat.dis-nncond-mat.stat-mechphysics.comp-ph

Quantum improved wormholes in the Dekel-Zhao dark matter halo

Jonathan A. Rebouças, Celio R. Muniz, Francisco Bento Lustosa +1 more·Oct 21, 2025

This work presents and investigates novel traversable wormhole solutions within the framework of Asymptotically Safe Gravity (ASG), sourced by a dark matter halo modeled by the Dekel--Zhao density profile. The scale-dependent gravitational coupling $...

gr-qcQuantum Physics

Near-optimal Prediction Error Estimation for Quantum Machine Learning Models

Qiuhao Chen, Yuling Jiao, Yinan Li +2 more·Oct 21, 2025

Understanding the theoretical capabilities and limitations of quantum machine learning (QML) models to solve machine learning tasks is crucial to advancing both quantum software and hardware developments. Similarly to the classical setting, the perfo...

Quantum Physics
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