Quantum Brain

Papers

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

Total Papers

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.

Qubit Platforms

Hardware platform mentions in abstractsPhotonic leads

4,069 papers found

Experimental Quantum Channel Purification

Yue-Yang Fei, Zhenhuan Liu, Rui Zhang +7 more·Oct 31, 2025

Quantum networks, which integrate multiple quantum computers and the channels connecting them, are crucial for distributed quantum information processing but remain inherently susceptible to channel noise. Channel purification emerges as a promising ...

Quantum Physics

Quantum Secret Sharing Scheme on Hypercyclic Quantum Structures

Lei Li, Zhi Li·Oct 31, 2025

This paper investigates the construction of efficient quantum secret sharing schemes for quantum access structures based on hypergraphs with three hyperedges. We prove that hypercycles with three hyperedges are quantum access structures if and only i...

Quantum Physics

Dependence-Driven, Scalable Quantum Circuit Mapping with Affine Abstractions

Marouane Benbetka, Merwan Bekkar, Riyadh Baghdadi +1 more·Oct 31, 2025

Qubit Mapping is a critical task in Quantum Compilation, as modern Quantum Processing Units (QPUs) are constrained to nearest-neighbor interactions defined by a qubit coupling graph. This compiler pass repairs the connectivity of two-qubit gates whos...

Computer Science

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

Stesso: A reconfigurable decomposition of $n$-bit Toffoli gates using symmetrical logical structures and adjustable support qubits

Shanyan Chen, Ali Al-Bayaty, Xiaoyu Song +1 more·Oct 30, 2025

An $(n+1)$-bit Toffoli gate is mainly utilized to construct other quantum gates and operators, such as Fredkin gates, arithmetical adders, and logical comparators, where $n \geq 2$. Several researchers introduced different methods to decompose $(n+1)...

Quantum Physics

A Zero Added Loss Multiplexing (ZALM) Source Simulation

Jerry Horgan, Alexander Nico-Katz, Shelbi L. Jenkins +6 more·Oct 29, 2025

Zero Added Loss Multiplexing (ZALM) offers broadband, per channel heralded EPR pairs, with a rich parameter space that allows its performance to be tailored for specific applications. We present a modular ZALM simulator that demonstrates how design c...

cs.NIQuantum Physics

Overcoming disorder in superconducting globally driven quantum computing

Riccardo Aiudi, Julien Despres, Roberto Menta +5 more·Oct 29, 2025

We study the impact of static disorder on a globally-controlled superconducting quantum computing architecture based on a quasi-two-dimensional ladder geometry [R. Menta et al., Phys. Rev. Research 7, L012065 (2025)]. Specifically, we examine how fab...

Quantum Physicscond-mat.supr-con

GHZ-Preserving Gates and Optimized Distillation Circuits

Mingyuan Wang, Guus Avis, Stefan Krastanov·Oct 29, 2025

Greenberger-Horne-Zeilinger (GHZ) states play a central role in quantum computing and communication protocols, as a typical multipartite entanglement resource. This work introduces an efficient enumeration and simulation method for circuits that pres...

Quantum Physics

Heuristic Quantum Advantage with Peaked Circuits

Hrant Gharibyan, Mohammed Zuhair Mullath, Nicholas E. Sherman +3 more·Oct 29, 2025

We design and demonstrate heuristic quantum advantage with peaked circuits (HQAP circuits) on Quantinuum's System Model H2 quantum processor. Through extensive experimentation with state-of-the-art classical simulation strategies, we identify a clear...

Quantum Physics

Transition-Aware Decomposition of Single-Qudit Gates

Denis A. Drozhzhin, Evgeniy O. Kiktenko, Aleksey K. Fedorov +1 more·Oct 29, 2025

Quantum computation with $d$-level quantum systems, also known as qudits, benefits from the possibility to use a richer computational space compared to qubits. However, for an arbitrary qudit-based hardware platform, the issue is that a generic qudit...

Quantum Physics

Detuning Choice for solving MIS and MWIS

Sem Saada Khelkhal, Louis Barcikowsky·Oct 29, 2025

We address the realization of Maximum Weighted Independent Set (MWIS) and quantum Maximum Independent Set (MIS) problems under Pasqal's neutral-atom QPU constraints: limited qubit number, bounds on Ω and Δ, sequence duration, confinement space, minim...

Quantum Physics

Efficient magic state cultivation with lattice surgery

Yutaka Hirano, Riki Toshio, Tomohiro Itogawa +1 more·Oct 28, 2025

Magic state distillation plays a crucial role in fault-tolerant quantum computation and represents a major bottleneck. In contrast to traditional logical-level distillation, physical-level distillation offers significant overhead reduction by enablin...

Quantum Physics

Tight Generalization Bound for Supervised Quantum Machine Learning

Xin Wang, Rebing Wu·Oct 28, 2025

We derive a tight generalization bound for quantum machine learning that is applicable to a wide range of supervised tasks, data, and models. Our bound is both efficiently computable and free of big-O notation. Furthermore, we point out that previous...

Quantum Physics

Optimizing Quantum Compilation via High-Level Quantum Instructions

Evandro C. R. Rosa, Jerusa Marchi, Eduardo I. Duzzioni +1 more·Oct 28, 2025

Current quantum programming is dominated by low-level, circuit-centric approaches that limit the potential for compiler optimization. This work presents how a high-level programming construct provides compilers with the semantic information needed fo...

Quantum Physics

Quantum evolution with classical fields

Christof Wetterich·Oct 28, 2025

Wave guides for classical electromagnetic fields can realize the quantum evolution of the wave function for a system of qubits. Phase shifts, switches and beam splits allow for the construction of arbitrary quantum gates. They can act at once on a la...

Quantum Physicsphysics.optics

Clifford Transformations for Fermionic Quantum Systems: From Paulis to Majoranas to Fermions

Ilias Magoulas, Francesco A. Evangelista·Oct 27, 2025

Clifford gates and transformations, which map products of elementary Pauli or Majorana operators to other such products, are foundational in quantum computing, underpinning the stabilizer formalism, error-correcting codes, magic state distillation, q...

Quantum Physics

Apparent Universal Behavior in Second Moments of Random Quantum Circuits

Daniel Belkin, James Allen, Bryan K. Clark·Oct 27, 2025

Just how fast does the brickwork circuit form an approximate 2-design? Is there any difference between anticoncentration and being a 2-design? Does geometry matter? How deep a circuit will I need in practice? We tell you everything you always wanted ...

Quantum PhysicsMathematical Physics

Quantum Phase Classification of Rydberg Atom Systems Using Resource-Efficient Variational Quantum Circuits and Classical Shadows

Hemish Ahuja, Samradh Bhardwaj, Kirti Dhir +2 more·Oct 27, 2025

Quantum phase transitions in Rydberg atom arrays present significant opportunities for studying many-body physics, yet distinguishing between different ordered phases without explicit order parameters remains challenging. We present a resource-effici...

Quantum Physicscs.LG

Resource analysis of Shor's elliptic curve algorithm with an improved quantum adder on a two-dimensional lattice

Quan Gu, Han Ye, Junjie Chen +1 more·Oct 27, 2025

Quantum computers have the potential to break classical cryptographic systems by efficiently solving problems such as the elliptic curve discrete logarithm problem using Shor's algorithm. While resource estimates for factoring-based cryptanalysis are...

Quantum Physics

Benchmarking VQE Configurations: Architectures, Initializations, and Optimizers for Silicon Ground State Energy

Zakaria Boutakka, Nouhaila Innan, Muhammed Shafique +2 more·Oct 27, 2025

Quantum computing presents a promising path toward precise quantum chemical simulations, particularly for systems that challenge classical methods. This work investigates the performance of the Variational Quantum Eigensolver (VQE) in estimating the ...

Quantum Physicscs.LG
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