Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Continuous-time quantum walk-based ansätze on neutral atom hardware
Edric Matwiejew, Jonathan Wurtz, Jing Chen +3 more·Aug 30, 2025
Continuous-time quantum walks offer provable speedups for certain computational problems, yet translating these advantages to near-term hardware remains challenging. We present the first experimental demonstration of variational ansätze based on cont...
Solving Conic Programs over Sparse Graphs using a Variational Quantum Approach: The Case of the Optimal Power Flow
Thinh Viet Le, Mark M. Wilde, Vassilis Kekatos·Aug 30, 2025
Conic programs arise broadly in physics, quantum information, machine learning, and engineering, many of which are defined over sparse graphs. Although such problems can be solved in polynomial time using classical interior-point solvers, the computa...
Improving Hardware Requirements for Fault-Tolerant Quantum Computing by Optimizing Error Budget Distributions
Tobias Forster, Nils Quetschlich, Mathias Soeken +1 more·Aug 30, 2025
Despite significant progress in quantum computing in recent years, executing quantum circuits for practical problems remains challenging due to error-prone quantum hardware. Hence, quantum error correction becomes essential but induces significant ov...
Quantum Circuit Optimization for the Fault-Tolerance Era: Do We Have to Start from Scratch?
Tobias Forster, Nils Quetschlich, Robert Wille·Aug 30, 2025
Quantum computing has made significant advancements in the last years in both hardware and software. Unfortunately, the currently available Noisy Intermediate-Scale Quantum (NISQ) hardware is still heavily affected by noise. Many optimization techniq...
Schrödinger's Toolbox: Exploring the Quantum Rowhammer Attack
Devon Campbell·Aug 30, 2025
Residual cross-talk in superconducting qubit devices creates a security vulnerability for emerging quantum cloud services. We demonstrate a Clifford-only Quantum Rowhammer attack—using just $X$ and CNOT gates—that injects faults on IBM's 127-qubit Ea...
Single-Shot Decoding of Biased-Tailored Quantum LDPC Codes
Devon Campbell·Aug 30, 2025
Quantum processors often exhibit biased noise (dominant $Z$ errors) and noisy readout, both of which degrade reliability and reproducibility. This work unifies two complementary strategies: bias tailoring, which realigns stabilizers to the dominant e...
An exploration of the noise sensitivity of the Shor's algorithm
Fusheng Yang, Zhipeng Liang, Zhengzhong Yi +1 more·Aug 30, 2025
Quantum algorithms face significant challenges due to qubit susceptibility to environmental noise, and quantum error correction typically requires prohibitive resource overhead. This paper proposes that quantum algorithms may possess inherent noise r...
Quantum Arithmetic Algorithms: Implementation, Resource Estimation, and Comparison
D. Fedoriaka, B. Goldsmith, Yingrong Chen·Aug 30, 2025
As quantum computing technology advances, the need for optimized arithmetic circuits continues to grow. This paper presents the implementation and resource estimation of a library of quantum arithmetic algorithms, including addition, multiplication, ...
From Classical Data to Quantum Advantage – Quantum Policy Evaluation on Quantum Hardware
Daniel Hein, Simon Wiedemann, Markus Baumann +7 more·Aug 30, 2025
Quantum policy evaluation (QPE) is a reinforcement learning (RL) algorithm which is quadratically more efficient than an analogous classical Monte Carlo estimation. It makes use of a direct quantum mechanical realization of a finite Markov decision p...
Polynomial complexity of open quantum system problems
Chong Chen, Ren-bao Liu·Aug 30, 2025
Open quantum systems (OQS's) are ubiquitous in non-equilibrium quantum dynamics and in quantum science and technology. Solving the dynamics of an OQS in a quantum many-body bath has been considered a computationally hard problem because of the dimens...
Quantum Circuits for Quantum Convolutions: A Quantum Convolutional Autoencoder
J. Orduz, P. Rivas, E. Baker·Aug 30, 2025
Quantum machine learning deals with leveraging quantum theory with classic machine learning algorithms. Current research efforts study the advantages of using quantum mechanics or quantum information theory to accelerate learning time or convergence....
Higher-Order Portfolio Optimization with Quantum Approximate Optimization Algorithm
Valter Uotila, Julia Ripatti, Bo Zhao·Aug 30, 2025
Portfolio optimization is one of the most studied optimization problems at the intersection of quantum computing and finance. In this work, we develop the first quantum formulation for a portfolio optimization problem with higherorder moments, skewne...
A new characterization of the holographic entropy cone
Guglielmo Grimaldi, Matthew Headrick, Veronika E. Hubeny·Aug 29, 2025
Entanglement entropies computed using the holographic Ryu-Takayanagi formula are known to obey an infinite set of linear inequalities, which define the so-called RT entropy cone. The general structure of this cone, or equivalently the set of all vali...
A Hybrid Anyon-Otto thermal machine
Mohit Lal Bera, Joyce Kwan, Armando Pérez +6 more·Aug 29, 2025
We propose a four-stroke quantum thermal machine based on the 1D anyon Hubbard model, which is capable of extracting the excess energy arising from anyon exclusion statistics at low temperature into finite work. Defining a hybrid anyon-Otto (HAO) cyc...
Reference-Beam Attacks against Twin-Field Quantum Key Distribution using Optical Injection Locking
Sergio Juárez, Alessandro Marcomini, Mikhail Petrov +5 more·Aug 29, 2025
Twin-Field Quantum Key Distribution (TF-QKD) has become a leading protocol to bring quantum communications to the national scale. The protocol requires the establishment of a shared phase and frequency reference between distant parties, which is comm...
Diagrammatic Reasoning with Control as a Constructor, Applications to Quantum Circuits
Noé Delorme, Simon Perdrix·Aug 29, 2025
Control is a fundamental concept in quantum and reversible computational models. It enables the conditional application of a transformation to a system, depending on the state of another system. We introduce a general framework for diagrammatic reaso...
Block Encoding of Sparse Matrices via Coherent Permutation
Abhishek Setty·Aug 29, 2025
Block encoding of sparse matrices underpins powerful quantum algorithms such as quantum singular value transformation, Hamiltonian simulation, and quantum linear solvers, yet its efficient gate-level realization for general sparse matrices remains a ...
Testing quantum-like markers in neural dynamics
Partha Ghose, Dimitris Pinotsis·Aug 29, 2025
We propose two experiments for identifying quantum markers in neural data based on quantum variants of well-known equations for neural activity that describe electrical signal propagation on axonal arbors and dendrites. These include (i) testing if p...
Quantum enhanced ensemble GANs for anomaly detection in continuous biomanufacturing
Rajiv Kailasanathan, William R. Clements, Mohammad Reza Boskabadi +4 more·Aug 29, 2025
The development of continuous biomanufacturing processes requires robust and early anomaly detection, since even minor deviations can compromise yield and stability, leading to disruptions in scheduling, reduced weekly production, and diminished econ...
Quantum Physics using Weighted Model Counting
Dirck van den Ende, Joon Hyung Lee, Alfons Laarman +1 more·Aug 29, 2025
Weighted model counting (WMC) has proven effective at a range of tasks within computer science, physics, and beyond. However, existing approaches for using WMC in quantum physics only target specific problem instances, lacking a general framework for...