Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
27,228
This Month
780
Today
0
Research Volume
12,689 papers in 12 months (-11% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
AI Agents for Variational Quantum Circuit Design
Marco Knipfer, Alexander Roman, Konstantin T. Matchev +2 more·Feb 22, 2026
Variational quantum circuits (VQCs) constitute a central building block of near-term quantum machine learning (QML), yet the principled design of expressive and trainable architectures remains a major open challenge. The VQC design space grows combin...
Some effective operators for graphene monolayer superlattices, from variational perturbation theory
Louis Garrigue·Feb 22, 2026
Our goal is to provide precise effective operators for monolayer graphene at Fermi energy. We consider the microscopic potential created by a lattice, and add a macroscopic potential with the same periodicity but varying at a scale $\varepsilon^{-1} ...
Co-Propagation of Quantum Time Synchronization and Optical Frequency Transfer over a 122 km Hollow-Core Fiber
Huibo Hong, Xiao Xiang, Runai Quan +15 more·Feb 22, 2026
The co-propagation of quantum and classical signals through shared optical fibers is crucial for scalable quantum networks. However, this coexistence is fundamentally limited by spontaneous Raman scattering (SpRS) from the bright classical light, whi...
The hyperfine interaction as a probe of the microscopic structure of the atomic nucleus
Denis Janković, Jean-Gabriel Hartmann, Johann Bartel +3 more·Feb 20, 2026
The study of highly charged electronic and muonic hydrogen-like ions, provides an intriguing way to probe the internal structure of their atomic nuclei. In this work, we use nuclear structure calculations to accurately calculate the hyperfine splitti...
Observation of Robust and Coherent Non-Abelian Hadron Dynamics on Noisy Quantum Processors
Fran Ilčić, Ritajit Majumdar, Emil Mathew +3 more·Feb 20, 2026
The real-time evolution of strongly interacting matter remains a frontier of fundamental physics, as classical simulations are hampered by exponential Hilbert space growth and rapid, unmanageable growth of quantum entanglement. This study reports the...
Digital Quantum Simulation of the Holstein-Primakoff Transformation on Noisy Qubits
Kelvin Yip, Alessandro Monteros, Sahel Ashhab +1 more·Feb 19, 2026
Quantum simulation of many-body systems offers a powerful approach to exploring collective quantum dynamics beyond classical computational reach. Although spin and fermionic models have been extensively simulated on digital quantum computers, the sim...
Exact quantum decision diagrams with scaling guarantees for Clifford+$T$ circuits and beyond
Arend-Jan Quist, Tim Coopmans, Alfons Laarman·Feb 19, 2026
A decision diagram (DD) is a graph-like data structure for homomorphic compression of Boolean and pseudo-Boolean functions. Over the past decades, decision diagrams have been successfully applied to verification, linear algebra, stochastic reasoning,...
Phase-sensitive representation of Majorana stabilizer states
Tomislav Begušić, Garnet Kin-Lic Chan·Feb 19, 2026
Stabilizer states hold a special place in quantum information science due to their connection with quantum error correction and quantum circuit simulation. In the context of classical simulations of many-body physics, they are an example of states th...
Efficiency of classical simulations of a noisy Grover algorithm
Raphaël Menu, Johannes Schachenmayer·Feb 19, 2026
We analyze the modification of entanglement dynamics in the Grover algorithm when the qubits are subjected to single-qubit amplitude-damping or phase-flip noise. We compare quantum trajectories with full density-matrix simulations, analyzing the dyna...
Single-Photon Motion in a Two-Dimensional Plane: Confinement and Boundary Escape
Hui-hui Miao·Feb 19, 2026
This paper investigates the motion of a single photon in a two-dimensional plane under closed and open boundary conditions. We employ two methods to construct the Hilbert space: Method A, based on the standard second-quantization formalism, and Metho...
Fault-tolerant preparation of arbitrary logical states in the cat code
Zi-Jie Chen, Weizhou Cai, Liang-Xu Xie +5 more·Feb 19, 2026
Preparing high-fidelity logical states is a central challenge in fault-tolerant quantum computing, yet existing approaches struggle to balance control complexity against resource overhead. Here, we present a complete framework for the fault-tolerant ...
Superiority of Krylov shadow tomography in estimating quantum Fisher information: From bounds to exactness
Yuan-Hao Wang, Da-Jian Zhang·Feb 19, 2026
Estimating the quantum Fisher information (QFI) is a crucial yet challenging task with widespread applications across quantum science and technologies. The recently proposed Krylov shadow tomography (KST) opens a new avenue for this task by introduci...
Detecting nonequilibrium phase transitions via continuous monitoring of space-time trajectories and autoencoder-based clustering
Erik Fitzner, Francesco Carnazza, Federico Carollo +1 more·Feb 19, 2026
The characterization of collective behavior and nonequilibrium phase transitions in quantum systems is typically rooted in the analysis of suitable system observables, so-called order parameters. These observables might not be known a priori, but the...
Mesoscopic Spin Coherence in a Disordered Dark Electron Spin Ensemble
Taewoong Yoon, Sangwon Oh, Junghyun Lee +1 more·Feb 19, 2026
Harnessing dipolar spin environments as controllable quantum resources is a central challenge in solid-state quantum technologies. Here, we report the observation of a coherent mesoscopic spin state in a disordered ensemble of substitutional nitrogen...
Quantum-Channel Matrix Optimization for Holevo Bound Enhancement
Hong Niu, Chau Yuen, Alexei Ashikhmin +1 more·Feb 19, 2026
Quantum communication holds the potential to revolutionize information transmission by enabling secure data exchange that exceeds the limits of classical systems. One of the key performance metrics in quantum information theory, namely the Holevo bou...
Neural Network Discovery of Paired Wigner Crystals in Artificial Graphene
Conor Smith, Yubo Yang, Zhou-Quan Wan +3 more·Feb 18, 2026
Moiré systems have emerged as an exciting tunable platform for engineering and probing quantum matter. A large number of exotic states have been observed, stimulating intense efforts in experiment, theory, and simulation. Utilizing a neural-network-b...
Finite-Temperature Dynamical Phase Diagram of the $2+1$D Quantum Ising Model
Lucas Katschke, Roland C. Farrell, Umberto Borla +2 more·Feb 18, 2026
Mapping finite-temperature dynamical phase diagrams of quantum many-body models is a necessary step towards establishing a framework of far-from-equilibrium quantum many-body universality. However, this is quite difficult due, in part, to the severe ...
Beyond the Classical Ceiling: Multi-Layer Fully-Connected Variational Quantum Circuits
Howard Su, Chen-Yu Liu, Samuel Yen-Chi Chen +2 more·Feb 18, 2026
Standard Variational Quantum Circuits (VQCs) struggle to scale to high-dimensional data due to the ``curse of dimensionality,'' which manifests as exponential simulation costs ($\mathcal{O}(2^d)$) and untrainable Barren Plateaus. Existing solutions o...
Quantitative study of Silicon Waveguides for the Generation of Quantum Correlated Photon Pairs Bridging Mid-Infrared and Telecom Bands
Abhishek Kumar Pandey, Deepak Jain, Catherine Baskiotis·Feb 18, 2026
Sources of quantum correlated photons pairs bridging the 3um-4um Mid-infrared (MIR) band and Telecom/Near-Infrared/Visible band are of high importance for quantum technologies. Spontaneous Parametric Down Conversion is generally used for realizing su...
Lie-Algebraic Analysis of Generators: Approximation-Error Bounds and Barren-Plateau Heuristics
Hiroshi Ohno·Feb 17, 2026
Lie algebras provide a useful framework for theoretical analysis in quantum machine learning, particularly in hybrid quantum-classical learning. From the viewpoint of function approximation, expectation values of parameterized quantum circuits can be...