Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
27,980
This Month
1,396
Today
0
Research Volume
13,222 papers in 12 months (+3% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Spectroscopy of Quantum Phase Slips: Visualizing Complex Real-Time Instantons
Foster Thompson, Daniel K. J. Boneß, Mark Dykman +1 more·Dec 30, 2025
Parametrically driven oscillators can emerge as a basis for the next generation of qubits. Classically, these systems exhibit two stable oscillatory states with opposite phases. Upon quantization, these states turn into a pair of closely spaced Floqu...
Necessary and sufficient conditions for entropy vector realizability by holographic simple tree graph models
Veronika E. Hubeny, Massimiliano Rota·Dec 30, 2025
We prove that the ``chordality condition'', which was established in arXiv:2412.18018 as a necessary condition for an entropy vector to be realizable by a holographic simple tree graph model, is also sufficient. The proof is constructive, demonstrati...
The Wigner-Ville Transform as an Information Theoretic Tool in Radio-frequency Signal Analysis
Erik Lentz, Emily Ellwein, Bill Kay +2 more·Dec 30, 2025
This paper presents novel interpretations to the field of classical signal processing of the Wigner-Ville transform as an information measurement tool. The transform's utility in detecting and localizing information-laden signals amidst noisy and clu...
Three-Axis Spin Squeezed States Associated with Excited-State Quantum Phase Transitions
Chon-Fai Kam·Dec 30, 2025
Spin squeezing in collective atomic ensembles enables quantum-enhanced metrology by reducing noise below the standard quantum limit through nonlinear interactions. Extending the one-axis and two-axis twisting paradigms of Kitagawa and Ueda, we introd...
A Boundary Condition Perspective on Circuit QED Dispersive Readout
Mustafa Bakr·Dec 30, 2025
Boundary conditions in confined geometries and measurement interactions in quantum mechanics share a common structural role: both select a preferred basis by determining which states are compatible with the imposed constraint. This paper develops thi...
Quantum phase synchronisation enhanced via Coulomb interaction in an optomechanical system
E. K. Berinyuy, P. Djorwé, J. -X. Peng +5 more·Dec 30, 2025
In this work, we investigate the dynamics of quantum synchronization in a four-mode optomechanical system, focusing on the influence of the Coulomb interaction between two mechanical resonators. We analyze the effect of the Coulomb coupling on three ...
Sub-Ensemble Correlations as a Covariance Geometry
Zuoxian Wang, Yuhao Zhang, Gaopu Hou +6 more·Dec 30, 2025
Conventional practice of spatially resolved detection in diffusion-coupled thermal atomic vapors implicitly treat localized responses as mutually independent. However, in this study, it is shown that observable correlations are governed by the intrin...
Incorporating multi-qubit exchange coupling effects between transmon qubits in Maxwell-Schrödinger numerical methods
Ghazi Khan, Thomas E. Roth·Dec 30, 2025
Superconducting qubits have emerged as a leading platform for realizing quantum computers. Accurate modeling of these devices is essential for predicting performance, improving design, and optimizing control. Many modeling approaches currently rely o...
Uncertainty inequalities in a non-Hermitian scenario: the problem of the metric
Yanet Alvarez, Mariela Portesi, Romina Ramirez +1 more·Dec 30, 2025
We investigate uncertainty relations for quantum observables evolving under non-Hermitian Hamiltonians, with particular emphasis on the role of metric operators. By constructing appropriate metrics in each dynamical regime, namely the unbroken-symmet...
Detection of quantum entanglement across the event horizon
Patryk Michalski, Andrzej Dragan·Dec 30, 2025
We investigate the problem of distinguishing between separable and entangled states of two quantum wave packets, one of which falls into a black hole. Intuitively, one might expect the two scenarios to be indistinguishable, since the information carr...
A Quantum-Inspired Algorithm for Graph Isomorphism
Innes L. Maxwell, Stefan N. van den Hoven, Jelmer J. Renema·Dec 30, 2025
The Noisy Intermediate-Scale Quantum (NISQ) era of technology in which we currently find ourselves is defined by non-universality, susceptibility to errors and noise, and a search for useful applications. While demonstrations of practical quantum adv...
Dissipation-Stabilized Quantum Revivals in a Non-Hermitian Lattice Gauge Theory
Yevgeny Bar Lev, Jad C. Halimeh, Achilleas Lazarides·Dec 30, 2025
With the advent of quantum simulation experiments of lattice gauge theories (LGTs), an open question is the effect of non-Hermiticity on their rich physics. The well-known PXP model, a U$(1)$ LGT with a two-level electric field in one spatial dimensi...
Harnessing subspace controllability: Dynamical generation of Dicke states in Heisenberg-coupled qubit arrays with a single local control
Vladimir M. Stojanovic, Tommaso Calarco, Andrea Muratori·Dec 30, 2025
We explore the feasibility of realizing Dicke states in qubit arrays with always-on isotropic Heisenberg coupling between adjacent qubits, assuming a single Zeeman-type control acting in the $z$ direction on an actuator qubit. The Lie-algebraic crite...
Machine Learning-Aided Optimal Control of a Qubit Subjected to External Noise
Riccardo Cantone, Shreyasi Mukherjee, Luigi Giannelli +2 more·Dec 30, 2025
We apply a machine-learning-enhanced greybox framework to a quantum optimal control protocol for open quantum systems. Combining a whitebox physical model with a neural-network blackbox trained on synthetic data, the method captures non-Markovian noi...
Les Houches Lecture Notes on Tensor Networks
Bram Vancraeynest-De Cuiper, Weronika Wiesiolek, Frank Verstraete·Dec 30, 2025
Tensor networks provide a powerful new framework for classifying and simulating correlated and topological phases of quantum matter. Their central premise is that strongly correlated matter can only be understood by studying the underlying entangleme...
Diagonal Unitary Covariant Superchannels
Dariusz Chruściński, Vivek Pandey, Sohail·Dec 30, 2025
We present a complete characterization of diagonal unitary covariant (DU-covariant) superchannels, i.e. higher-order transformations transforming quantum channels into themselves. Necessary and sufficient conditions for complete positivity and trace ...
Increased-Efficiency Multiple-Decoding-Attempts Error Correction for Continuous-Variable Quantum Key Distribution
Lukas Eisemann, Ömer Bayraktar, Stefan Richter +3 more·Dec 30, 2025
In continuous-variable quantum key distribution (CV-QKD), the performance of the information reconciliation (IR) step is critical for the achievable secret key rate (SKR) and transmission distance. We show how to improve on the recently introduced im...
Assembling a Bose-Hubbard superfluid from tweezer-controlled single atoms
William J. Eckner, Theodor Lukin Yelin, Alec Cao +4 more·Dec 30, 2025
Quantum simulation relies on the preparation and control of low-entropy many-body systems to reveal the behavior of classically intractable models. The development of new approaches for realizing such systems therefore represents a frontier in quantu...
Benasque Lectures on Gaussian Bosonic Systems and Analogue Gravity
Anthony J. Brady·Dec 30, 2025
These notes are adapted from six lectures that I delivered at Analogue Gravity in Benasque 2023. They present the unified Gaussian (phase-space) framework to describe linear bosonic quantum systems, the standard tool in quantum optics and continuous-...
Relativistic Lindblad description of the electron's radiative dynamics
Andre G. Campos, Karen Z. Hatsagortsyan, Christoph H. Keitel·Dec 30, 2025
An effective model for describing the relativistic quantum dynamics of a radiating electron is developed via a relativistic generalization of the Lindblad master equation. By incorporating both radiation reaction and vacuum fluctuations into the Dira...