Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Scalable Robust Quantum Control for Semiconductor Spin Qubits with Always-on Couplings
Yong-Ju Hai, Shihang Zhang, Hao-Yu Guan +3 more·Mar 17, 2025
We demonstrate a robust quantum control framework that enables high-fidelity gate operations in semiconductor spin qubit systems with always-on couplings. Always-on interactions between qubits pose a fundamental challenge for quantum processors by in...
Virtual purification complements quantum error correction in quantum metrology
Hyukgun Kwon, Changhun Oh, Youngrong Lim +3 more·Mar 16, 2025
Quantum resources enable one to achieve quantum-enhanced estimation sensitivity beyond its classical counterpart. Many studies mainly focus on reducing statistical error, under the assumption that one can always set an unbiased estimator. However, se...
Strongly anharmonic flux-tunable transmon based on InAs-Al 2D heterostructure
Shukai Liu, Arunav Bordoloi, Jacob Issokson +4 more·Mar 15, 2025
The gatemon qubits, made of transparent superconducting-semiconducting Josephson junctions, typically have even weaker anharmonicity than the opaque AlOx-junction transmons. However, flux-frustrated gatemons can acquire a much stronger anharmonicity,...
Quantum Simulations of Chemical Reactions: Achieving Accuracy with NISQ Devices
Maitreyee Sarkar, Lisa Roy, Akash Gutal +2 more·Mar 15, 2025
Quantum computing is viewed as a promising technology because of its potential for polynomial growth in complexity, in contrast to the exponential growth observed in its classical counterparts. In the current Noisy Intermediate-Scale Quantum (NISQ) e...
Designing quantum error correction codes for practical spin qudit systems
Sumin Lim, A. Ardavan·Mar 15, 2025
The implementation of practical error correction protocols is essential for deployment of quantum information technologies. Ways of exploiting high-spin nuclei, which have multi-level quantum resources, have attracted interest in this context because...
Quantum physics informed neural networks for multi-variable partial differential equations
Giorgio Panichi, Sebastiano Corli, Enrico Prati·Mar 15, 2025
Quantum Physics-Informed Neural Networks (QPINNs) integrate quantum computing and machine learning to impose physical biases on the output of a quantum neural network, aiming to either solve or discover differential equations. The approach has recent...
Near-Term Fermionic Simulation with Subspace Noise Tailored Quantum Error Mitigation
Miha Papič, Manuel G. Algaba, Emiliano Godinez-Ramirez +4 more·Mar 14, 2025
Quantum error mitigation (QEM) has emerged as a powerful tool for the extraction of useful quantum information from quantum devices. Here, we introduce the Subspace Noise Tailoring (SNT) algorithm, which efficiently combines the cheap cost of Symmetr...
Quantum ensemble learning with a programmable superconducting processor
Jiachen Chen, Yao-Juan Wu, Zhen Yang +30 more·Mar 14, 2025
Quantum machine learning is among the most exciting potential applications of quantum computing. However, the vulnerability of quantum information to environmental noises and the consequent high cost for realizing fault tolerance has impeded the quan...
High-Efficiency, Low-Loss Floquet-mode Traveling Wave Parametric Amplifier
Jennifer Wang, Kaidong Peng, Jeffrey M. Knecht +12 more·Mar 14, 2025
Advancing fault-tolerant quantum computing and fundamental science necessitates quantum-limited amplifiers with near-ideal quantum efficiency and multiplexing capability. However, existing solutions typically achieve one at the expense of the other. ...
Hamiltonian Reordering for Shallower Trotterization Circuits
Cédric Ho Thanh·Mar 14, 2025
Quantum simulation is a popular application of quantum computing, but its practical realization is hindered by the technical limitations of current devices. In this work, we focus on preprocessing Hamiltonians before Trotterization to generate shallo...
Fault-tolerant logical state construction based on cavity-QED network
R. Asaoka, Yasunari Suzuki, Yuuki Tokunaga·Mar 14, 2025
Exploring an efficient and scalable architecture of fault-tolerant quantum computing (FTQC) is vital for demonstrating useful quantum computing. Here, we propose and evaluate a scalable and practical architecture with a cavity-quantum-electrodynamics...
Noise-strength-adapted approximate quantum codes inspired by machine learning
Shuwei Liu, Shiyu Zhou, Zi-Wen Liu +1 more·Mar 14, 2025
We demonstrate that machine learning provides a powerful tool for discovering new approximate quantum error-correcting (AQEC) codes beyond conventional algebraic frameworks. Building upon direct observations through hybrid quantum-classical learning,...
Distilled remote entanglement between superconducting qubits across optical channels
Nicolas Dirnegger, Moein Malekakhlagh, Vikesh Siddhu +5 more·Mar 13, 2025
A promising quantum computing architecture comprises modules of superconducting quantum processors linked via optical channels using quantum transducers. As quantum transducer hardware improves, a need has arisen to understand the quantitative relati...
Approximation Methods for Simulation and Equivalence Checking of Noisy Quantum Circuits
Mingyu Huang, Ji Guan, Wang Fang +1 more·Mar 13, 2025
In the current NISQ (Noisy Intermediate-Scale Quantum) era, simulating and verifying noisy quantum circuits is crucial but faces challenges such as quantum state explosion and complex noise representations, constraining simulation and equivalence che...
A useful metric for the NISQ era: Qubit error probability and its role in zero noise extrapolation
Nahual Sobrino, Unai Aseginolaza, J. Jornet-Somoza +1 more·Mar 13, 2025
Accurate assessment and management of errors is indispensable for extracting useful results from noisy intermediate-scale quantum devices. In this work, we propose the qubit error probability (QEP), a device specific metric that combines relaxation, ...
Quantum Error Detection For Early Term Fault-Tolerant Quantum Algorithms
Tom Ginsberg, Vyom Patel·Mar 13, 2025
Quantum error detection (QED) offers a promising pathway to fault tolerance in near-term quantum devices by balancing error suppression with minimal resource overhead. However, its practical utility hinges on optimizing design parameters-such as synd...
Coherence of a hole spin flopping-mode qubit in a circuit quantum electrodynamics environment
L'eo Noirot, C. X. Yu, J. C. Abadillo-Uriel +5 more·Mar 13, 2025
The entanglement of microwave photons and spin qubits in silicon represents a pivotal step forward for quantum information processing utilizing semiconductor quantum dots. Such hybrid spin circuit quantum electrodynamics (cQED) has been achieved by g...
Performance of the spin qubit shuttling architecture for a surface code implementation
Berat Yenilen, Arnau Sala, H. Bluhm +2 more·Mar 13, 2025
Qubit shuttling promises to advance some quantum computing platforms to the qubit register sizes needed for effective quantum error correction (QEC), but also introduces additional errors whose impact must be evaluated. The established method to inve...
Ability of entanglement and purity to help to detect systematic experimental errors
Julia Freund, Francesco Basso Basset, Tobias M. Krieger +12 more·Mar 12, 2025
Measurements are central in all quantitative sciences, and a fundamental challenge is to make observations without systematic measurement errors. This holds in particular for quantum information processing, where other error sources, such as noise an...
Composably Secure Delegated Quantum Computation with Weak Coherent Pulses
Maxime Garnier, Dominik Leichtle, Luka Music +1 more·Mar 11, 2025
A client can delegate a quantum computation to a powerful remote server while ensuring the privacy and the integrity of its computation via Secure Delegated Quantum Computation (SDQC). Thanks to recent results making them noise-robust and resource-ef...