Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Beam search decoder for quantum LDPC codes
Min Ye, Dave Wecker, Nicolas Delfosse·Dec 8, 2025
We propose a decoder for quantum low density parity check (LDPC) codes based on a beam search heuristic guided by belief propagation (BP). Our beam search decoder applies to all quantum LDPC codes and achieves different speed-accuracy tradeoffs by tu...
Suppressing Fast Dipolar Noise in Solid-State Spin Qubits
Jaime García Oliván, Ainitze Biteri-Uribarren, Oliver T. Whaites +1 more·Dec 7, 2025
Spin qubit coherence is a fundamental resource for the realization of quantum technologies. For solid-state platforms, spin decoherence is dominated by the magneto-active environment in the lattice, limiting their applicability. While standard dynami...
Non-Orthogonal Multiple Access-Based Continuous-Variable Quantum Key Distribution: Secret Key Rate Analysis and Power Allocation
Zhichao Dong, Xiaolin Zhou, Huang Peng +3 more·Dec 7, 2025
We address the multi-user quantum key distribution (QKD) problem under malicious quantum attacks, which is critical for realizing a large-scale quantum Internet. This paper maximizes the sum secret key rate (SKR) of a novel uplink non-orthogonal mult...
Non-Orthogonal Multiple-Access for Coherent-State Optical Quantum Communications Under Lossy Photon Channels
Zhichao Dong, Xiaolin Zhou, Yongkang Chen +3 more·Dec 7, 2025
Coherent states have been increasingly considered in optical quantum communications (OQCs). With the inherent non-orthogonality of coherent states, non-orthogonal multiple-access (NOMA) naturally lends itself to the implementation of multi-user OQC. ...
Mitigating Barren plateaus in quantum denoising diffusion probabilistic models
Haipeng Cao, Kaining Zhang, Dacheng Tao +1 more·Dec 7, 2025
Quantum generative models leverage quantum superposition and entanglement to enhance learning efficiency for both classical and quantum data. The quantum denoising diffusion probabilistic model (QuDDPM), inspired by its classical counterpart, has bee...
Fault-Tolerant Information Processing with Quantum Weak Measurement
Qi Song, Hongjing Li, Chengxi Yu +4 more·Dec 7, 2025
Noise is an important factor that influences the reliability of information acquisition, transmission, processing, and storage. In order to suppress the inevitable noise effects, a fault-tolerant information processing approach via quantum weak measu...
Solving larger Travelling Salesman Problem networks with a penalty-free Variational Quantum Algorithm
Daniel Goldsmith, Xing Liang, Dimitrios Makris +1 more·Dec 6, 2025
The Travelling Salesman Problem (TSP) is a well-known NP-Hard combinatorial optimisation problem, with industrial use cases such as last-mile delivery. Although TSP has been studied extensively on quantum computers, it is rare to find quantum solutio...
Nonreciprocal photon blockade in a spinning microwave magnomechanical system through kerr-magnon and optical parametric amplifier
S. K. Singh, Mohamed Amazioug, Jia-Xin Peng +3 more·Dec 6, 2025
Unconventional quantum antibunching, arising from quantum interference effects, represents a notable form of quantum correlation that has attracted significant attention for its ability to generate high-quality single-quantum sources. In this work, w...
Hybrid qubit-oscillator module with motional states of two trapped interacting atoms
Jaeyong Hwang, Tianrui Xu, Sean R. Muleady +5 more·Dec 6, 2025
We propose the use of motional states of two interacting atoms trapped in a potential stroboscopically engineered by an optical tweezer as a means to implement a qubit-oscillator system, in analogy to those implemented in circuit quantum electrodynam...
Quantum Interior Point Methods: A Review of Developments and An Optimally Scaling Framework
Mohammadhossein Mohammadisiahroudi, Zeguan Wu, Pouya Sampourmahani +2 more·Dec 6, 2025
The growing demand for solving large-scale, data-intensive linear and conic optimization problems, particularly in applications such as artificial intelligence and machine learning, has highlighted the limitations of classical interior point methods ...
Deep-Space Optical Communication Receiver Based on Single Photon Coherent Beam Combination
Antoni Mikos-Nuszkiewicz, Karol Łukanowski, Konrad Banaszek +1 more·Dec 5, 2025
We introduce an alternative receiver architecture for deep-space optical communication, in which a single large aperture is replaced by an array of smaller ones with outputs combined coherently, employing phase stabilization based on photon counting ...
Lattice field theory for superconducting circuits
Joshua Lin, Max Hays, Stephen Sorokanich +3 more·Dec 5, 2025
Large superconducting quantum circuits have a number of important applications in quantum computing. Accurately predicting the performance of these devices from first principles is challenging, as it requires solving the many-body Schrödinger equatio...
Measurement-based Initial Point Smoothing and Control Approach to Quantum Memory Systems
Igor G. Vladimirov, Ian R. Petersen, Guodong Shi·Dec 5, 2025
This paper is concerned with a quantum memory system for storing quantum information in the form of its initial dynamic variables in the presence of environmental noise. In order to compensate for the deviation from the initial conditions, the classi...
Mechanically mediated optical-microwave quantum state transfer by feedback
Max P. Foreman, Jesse J. Slim, Warwick P. Bowen·Dec 5, 2025
State transfer between light and microwaves is a key challenge in quantum networks. Promising transducers use a mechanical intermediary that couples to both fields via radiation pressure. Such electro-optomechanical devices have achieved high efficie...
Shadow Tomography Against Adversaries
Maryam Aliakbarpour, Vladimir Braverman, Nai-Hui Chia +4 more·Dec 5, 2025
We study single-copy shadow tomography in the adversarial robust setting, where the goal is to learn the expectation values of $M$ observables $O_1, \ldots, O_M$ with $\varepsilon$ accuracy, but $γ$-fraction of the outcomes can be arbitrarily corrupt...
Resolving Abrikosov vortex entry in superconducting nano-string resonators via displacement-noise spectroscopy in cavity-optomechanics
T. Luschmann, T. Parvini, Lukas Niekamp +3 more·Dec 5, 2025
Abrikosov vortices in type-II superconductors critically influence current flow and coherence, thereby imposing fundamental limits on superconducting quantum technologies. Quantum circuits employ superconducting elements at micro- and mesoscopic scal...
Non-equilibrium quantum field theory of the free-electron laser in Keldysh formalism
Loris Di Cairano·Dec 4, 2025
We develop a non-equilibrium quantum field theory of the free-electron laser based on the Preparata model, using the real-time Keldysh formalism. Starting from a microscopic Lagrangian for a relativistic electron beam coupled to a single radiation mo...
Real-time optimal quantum control for atomic magnetometers with decoherence
Julia Amoros-Binefa·Dec 4, 2025
Quantum entanglement, in the form of spin squeezing, is known to improve the sensitivity of atomic sensors to static or slowly varying fields. Sensing transient events presents a distinct challenge, requires different analysis tools, and has not been...
Hybrid Quantum-Classical Autoencoders for Unsupervised Network Intrusion Detection
Mohammad Arif Rasyidi, Omar Alhussein, Sami Muhaidat +1 more·Dec 4, 2025
Unsupervised anomaly-based intrusion detection requires models that can generalize to attack patterns not observed during training. This work presents the first large-scale evaluation of hybrid quantum-classical (HQC) autoencoders for this task. We c...
High Fidelity Qubit Control in a Natural Si-MOS Quantum Dot using a 300 mm Silicon on Insulator Wafer
Xander Peetroons, Xunyao Luo, Tsung-Yeh Yang +26 more·Dec 4, 2025
We demonstrate high-fidelity single qubit control in a natural Si-MOS quantum dot fabricated in an industrial 300 mm wafer process on a silicon on insulator (SOI) wafer using electron spin resonance. A relatively high optimal Rabi frequency of 5 MHz ...