Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Computing Green's functions and improving ground state energy estimation on quantum computers with Liouvillian recursion
Jérôme Leblanc, Olivier Nahman-Lévesque, Julien Forget +3 more·Mar 5, 2026
We present a quantum-classical hybrid implementation of the Liouvillian recursion method to compute many-body Green's functions using a quantum computer. From an approximate ground state preparation circuit, this algorithm produces the local ($r=r'$)...
Simplified circuit-level decoding using Knill error correction
Ewan Murphy, Subhayan Sahu, Michael Vasmer·Mar 5, 2026
Quantum error correction will likely be essential for building a large-scale quantum computer, but it comes with significant requirements at the level of classical control software. In particular, a quantum error-correcting code must be supplemented ...
Robust and optimal control of open quantum systems
Zi-Jie Chen, Hongwei Huang, Lida Sun +9 more·Mar 5, 2026
Recent advancements in quantum technologies have highlighted the importance of mitigating system imperfections, including parameter uncertainties and decoherence effects, to improve the performance of experimental platforms. However, most of the prev...
Design and Analysis of an Improved Constrained Hypercube Mixer in Quantum Approximate Optimization Algorithm
Arkadiusz Wołk, Karol Capała, Katarzyna Rycerz·Mar 5, 2026
The Quantum Approximate Optimization Algorithm (QAOA) is expected to offer advantages over classical approaches when solving combinatorial optimization problems in the Noisy Intermediate-Scale Quantum (NISQ) era. In its standard formulation, however,...
Security bounds for unidimensional discrete-modulated CV-QKD: a Gaussian extremality approach
John A. Mora Rodríguez, Maron F. Anka, Leonardo J. Pereira +2 more·Mar 5, 2026
Unidimensional (1D) Gaussian-modulated continuous-variable quantum key distribution protocols have been proposed as a way to simplify implementation and reduce costs through single-quadrature modulation, requiring only one modulator while maintaining...
Constant-Depth Quantum Imaginary Time Evolution Using Dynamic Fan-out Circuits
Albert Lund, Erika Magnusson, Werner Dobrautz +1 more·Mar 5, 2026
Dynamic quantum circuits combine mid-circuit measurement with classical feed-forward, enabling circuit constructions with reduced entangling-gate depth. Here, we investigate their use in Quantum Imaginary Time Evolution (QITE), where circuit depth an...
Classical shadows for non-iid quantum sources
Leonardo Zambrano·Mar 5, 2026
Classical shadow tomography has emerged as a powerful framework for predicting properties of quantum many-body systems with favorable sample complexity. Standard theoretical guarantees, however, rely on the assumption that experimental rounds are ind...
Rethinking Reproducibility in the Classical (HPC)-Quantum Era: Toward Workflow-Centered Science
Anna Vrtiak, Duuk Baten, Ariana Torres-Knoop·Mar 5, 2026
Scientific knowledge increasingly depends on complex computational processes where both hardware and software layers can influence research outcomes. As computational complexity grows, classical-quantum integration provides a lens for examining how t...
Demonstrating Noise-adapted Quantum Error Correction With Break-Even Performance
Vismay Joshi, Anubhab Rudra, Sourav Dutta +2 more·Mar 4, 2026
The promise of quantum computing is closer to reality today than ever before, thanks to rapid progress in the development of quantum hardware. Even as qubit lifetimes and gate fidelities continue to improve, realizing robust, fault-tolerant quantum c...
Feedback-Induced Advantage in Quantum Clockworks
Jakob Miller, Paul Erker·Mar 4, 2026
Atomic frequency standards have achieved steadily increasing precision over the past seventy years, enabled in part by feedback mechanisms that stabilise their output. In parallel, the timekeeping capabilities of quantum systems have been explored wi...
Linear-Time Encodable and Decodable Quantum Error-Correcting Codes
Adam Wills, Ting-Chun Lin, Rachel Yun Zhang +1 more·Mar 4, 2026
Recent years have seen rapid development in the subject of quantum coding theory, with breakthroughs on many exciting classes of codes, including quantum LDPC codes, quantum locally testable codes, and quantum codes with interesting transversal gates...
Examination of classical simulations for Heisenberg-Langevin equations for spin-1/2
Scott D. Linz, Jochen Gemmer·Mar 4, 2026
A system of spins coupled to a bath is a traditional setup in open quantum systems. Through Heisenberg's equation, the spin dynamics can be modeled by a set of first-order differential equations. Interpreting the terms as colored noise and non-Markov...
Towards Predictive Quantum Algorithmic Performance: Modeling Time-Correlated Noise at Scale
Amit Jamadagni, Gregory Quiroz, Eugene Dumitrescu·Mar 4, 2026
Combining tensor network techniques with quantum autoregressive moving average models, we quantify the effects of time-correlated noise on quantum algorithms and predict their performance at scale. As a paradigmatic test case, we examine the quantum ...
Quantum error mitigation by hierarchy-informed sampling: chiral dynamics in the Schwinger model
Theo Saporiti, Oleg Kaikov, Vasily Sazonov +1 more·Mar 4, 2026
Quantum simulations on current NISQ hardware are limited by its noisy nature, making efficient quantum error mitigation methods highly demanded. In this paper we introduce a novel mitigation scheme, applicable to arbitrary quantum simulations of time...
Direct derivation of the modified Langevin noise formalism from the canonical quantization of macroscopic electromagnetism
Alessandro Ciattoni·Mar 4, 2026
The modified Langevin noise formalism (MLNF) models the interaction of the quantized electromagnetic field with an arbitrary lossy magneto-dielectric object placed in vacuum using three types of non-interacting bosonic polaritons: scattering, electri...
Constructing Arbitrary Coherent Rearrangements in Optical Lattices
Alexander Roth, Liyang Qiu, Timon Hilker +2 more·Mar 4, 2026
Coherent control of motional degrees of freedom of ultracold atoms in optical lattices offers a promising route towards programmable quantum dynamics with massive particles. We propose and analyze a scheme for implementing coherent rearrangement of u...
OptiQKD: A Machine Learning-Optimized Framework for Real-Time Parameter Tuning in Quantum Key Distribution
Noureldin Mohamed, Jawaher Kaldari, Saif Al-Kuwari·Mar 4, 2026
Despite the robust security guarantees of Quantum Key Distribution (QKD), its practical deployment is significantly challenged by the dynamic nature of quantum channels and the complexity of real-time parameter optimization. In this paper, we propose...
Resource State Distillation via Stabilizer Channels
Christopher Popp, Tobias C. Sutter, Beatrix C. Hiesmayr·Mar 4, 2026
Quantum technologies rely on high-quality resource states, such as maximally entangled or private states, which are indispensable for quantum communication and cryptography. In practice, however, these states are inevitably degraded by noise. Distill...
Towards Practical Quantum Federated Learning: Enhancing Efficiency and Noise Tolerance
Suzukaze Kamei, Hideaki Kawaguchi, Takahiko Satoh·Mar 4, 2026
Federated Learning (FL) enables privacy-preserving distributed model training, yet remains vulnerable to gradient inversion and model leakage attacks. Quantum communication has been proposed to provide information-theoretic security for parameter agg...
Enhancing Variational Quantum Eigensolvers for SU(2) Lattice Gauge Theory via Systematic State Preparation
Klaus Liegener, Dominik Mattern, Alexander Korobov +7 more·Mar 4, 2026
Computing the vacuum and energy spectrum in non-Abelian, interacting lattice gauge theories remains an open challenge, in part because approximating the continuum limit requires large lattices and huge Hilbert spaces. To address this difficulty with ...