Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Quantum walks reveal topological flat bands, robust edge states and topological phase transitions in cyclic graphs
Dinesh Kumar Panda, Colin Benjamin·Jul 23, 2025
Topological phases, edge states, and flat bands in synthetic quantum systems are a key resource for topological quantum computing and noise-resilient information processing. We introduce a scheme based on step-dependent quantum walks on cyclic graphs...
A Unified Toolbox for Multipartite Entanglement Certification
Ye-Chao Liu, Jannis Halbey, S. Pokutta +1 more·Jul 23, 2025
We present a unified framework for multipartite entanglement characterization based on the conditional gradient (CG) method, incorporating both fast heuristic detection and rigorous witness construction with numerical error control. Our method enable...
Resource-Efficient Simulations of Particle Scattering on a Digital Quantum Computer
Yahui Chai, J. Gibbs, V. Pascuzzi +4 more·Jul 23, 2025
We develop and demonstrate methods for simulating the scattering of particle wave packets in the interacting Thirring model on digital quantum computers, with hardware implementations on up to 80 qubits. We identify low-entanglement time slices of th...
Computational Performance Bounds Prediction in Quantum Computing With Unstable Noise
Jinyang Li, Samudra Dasgupta, Yuhong Song +3 more·Jul 22, 2025
Quantum computing has significantly advanced in recent years, boasting devices with hundreds of quantum bits (qubits), hinting at its potential quantum advantage over classical computing. Yet, noise in quantum devices poses significant barriers to re...
A quantum algorithm for the n-gluon MHV scattering amplitude
Erik Bashore, Stefano Moretti, Timea Vitos·Jul 18, 2025
We propose a quantum algorithm for computing the n-gluon maximally helicity violating (MHV) tree-level scattering amplitude. We revisit a newly proposed method for unitarisation of non-unitary operations and present how this implementation can be use...
Fast charge noise sensing using a spectator valley state in a singlet-triplet qubit
David W. Kanaar, Yasuo Oda, M. Gyure +1 more·Jul 18, 2025
Semiconductor spin qubits are a promising platform for quantum computing but remain vulnerable to charge noise. Accurate, in situ measurement of charge noise could enable closed-loop control and improve qubit performance. Here, we propose a method fo...
Quantum Internet in a Nutshell -- Advancing Quantum Communication with Ion Traps
J. Hilder, Sascha Heußen, A. Ginter +4 more·Jul 18, 2025
Quantum Internet in a Nutshell (QI-Nutshell) connects the fields of quantum communication and quantum computing by emulating quantum communication protocols on currently available ion-trap quantum computers. We demonstrate emulations of QKD protocols...
Phase shadow: A noise-tolerant path to global quantum property estimation
Qingyue Zhang, Dayue Qin, Zhou You +3 more·Jul 17, 2025
Measuring global quantum properties-such as the fidelity to complex multipartite states-is both an essential and experimentally challenging task. Classical shadow estimation offers favorable sample complexity, but typically relies on many-qubit circu...
Scalable suppression of heating errors in large trapped-ion quantum processors
Zixuan Huo, Yangchao Shen, Xiao Yuan +1 more·Jul 17, 2025
Trapped-ion processors are leading candidates for scalable quantum computation. However, motional heating remains a key obstacle to fault-tolerant operation, especially when system size increases. Heating error is particularly challenging to suppress...
Technical Review on RF-Amplifiers for Quantum Computer Circuits: New Architectures of Josephson Parametric Amplifier
Ahmad Salmanogli, Hesam Zandi, Mahdi Esmaeili +2 more·Jul 17, 2025
Josephson Parametric Amplifiers (JPAs) are key components in quantum information processing due to their ability to amplify weak quantum signals with near-quantum-limited noise performance. This is essential for applications such as qubit readout, qu...
Scalable dissipative quantum error correction for qubit codes
Ivan Rojkov, Elias Zapusek, Florentin Reiter·Jul 16, 2025
Dissipative quantum error correction (QEC) autonomously protects quantum information using engineered dissipation and offers a promising alternative to error correction via measurement and feedback. However, scalability remains a challenge, as correc...
BenchRL-QAS: Benchmarking reinforcement learning algorithms for quantum architecture search
Azhar Ikhtiarudin, Aditi Das, Param Thakkar +1 more·Jul 16, 2025
We present BenchRL-QAS, a unified benchmarking framework for reinforcement learning (RL) in quantum architecture search (QAS) across a spectrum of variational quantum algorithm tasks on 2- to 8-qubit systems. Our study systematically evaluates 9 diff...
On approximate quantum error correction for symmetric noise
Gereon Koßmann, Julius A. Zeiss, Omar Fawzi +1 more·Jul 16, 2025
We revisit the extendability-based semi-definite programming hierarchy introduced by Berta et al. [Mathematical Programming, 1 - 49 (2021)], which provides converging outer bounds on the optimal fidelity of approximate quantum error correction (AQEC)...
Jenga-Krotov algorithm: Efficient compilation of multiqubit gates for exchange-only qubits
Jiahao Wu, Guanjie He, Wenyuan Zhuo +2 more·Jul 16, 2025
Exchange-only (EO) qubits, implemented in triple-quantum-dot systems, offer a compelling platform for scalable semiconductor-based quantum computing by enabling universal control through purely exchange interactions. While high-fidelity single- and t...
Probing Hadron Scattering in Lattice Gauge Theories on Qudit Quantum Computers
Rohan Joshi, Jan C. Louw, M. Meth +5 more·Jul 16, 2025
An overarching goal in the flourishing field of quantum simulation for high-energy physics is the first-principles study of the microscopic dynamics of scattering processes on a quantum computer. Currently, this is hampered by small system sizes and ...
Efficient Qudit Circuit for Quench Dynamics of $2+1$D Quantum Link Electrodynamics
Rohan Joshi, M. Meth, Jan C. Louw +4 more·Jul 16, 2025
A major challenge in the burgeoning field of quantum simulation for high-energy physics is the realization of scalable $2+1$D lattice gauge theories on state-of-the-art quantum hardware, which is an essential step towards the overarching goal of prob...
Unfolded distillation: very low-cost magic state preparation for biased-noise qubits
Diego Ruiz, Jérémie Guillaud, Christophe Vuillot +1 more·Jul 16, 2025
Magic state distillation enables universal fault-tolerant quantum computation by implementing non-Clifford gates via the preparation of high-fidelity magic states. However, it comes at the cost of substantial logical-level overhead in both space and ...
Enhancing the Clique Local Decoder to Correct Length-2 Space Errors in the Surface Code
Zikang Jia, S. Veerapaneni, Gokul Subramanian Ravi·Jul 15, 2025
The growing demand for fault-tolerant quantum computing drives the need for efficient, scalable Quantum Error Correction (QEC) strategies. Conventional decoders designed for worst-case error scenarios incur significant overhead, prompting the develop...
Towards a Utility-Scale Quantum Edge Detection for Real-World Medical Image Data
Emmanuel Billias, Nikos Chrisochoides·Jul 15, 2025
We present a two-level decomposition strategy to enhance the quality and performance of Quantum Hadamard Edge Detection (QHED) for practical image analysis on Noisy Intermediate-Scale Quantum (NISQ) devices. A Data-Level Decomposition partitions an i...
High-throughput bidirectional electro-optic transduction assessed with a practical quantum capacity
M. D. Urmey, S. Dickson, K. Adachi +7 more·Jul 14, 2025
A microwave-optical transducer of sufficiently low noise and high signal transfer rate would allow entanglement to be distributed between superconducting quantum processors reliably within the lifetimes of their quantum memories. To clarify the multi...