Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Entanglement asymmetry for higher and noninvertible symmetries
Francesco Benini, Pasquale Calabrese, Michele Fossati +2 more·Sep 19, 2025
Entanglement asymmetry is an observable in quantum systems, constructed using quantum-information methods, suited to detecting symmetry breaking in states -- possibly out of equilibrium -- relative to a subsystem. In this paper we define the asymmetr...
Exploring confinement transitions in $\mathbb{Z}_2$ lattice gauge theories with dipolar atoms beyond one dimension
Matjaž Kebrič, Lin Su, Alexander Douglas +6 more·Sep 19, 2025
Confinement of particles into bound states is a phenomenon spanning from high-energy to condensed matter physics, which can be studied in the framework of lattice gauge theories (LGTs). Achieving a comprehensive understanding of confinement continues...
Classical and quantum theory of magnonic and magnetoelastic nonlinear dynamics in continuum geometries
Marco Brühlmann, Yunyoung Hwang, Jorge Puebla +1 more·Sep 19, 2025
We provide a theory of spin and acoustic wave coupled nonlinear dynamics in continuum systems. Combining the Landau-Lifshitz-Gilbert equations with the magnetoelastic Hamiltonian, we derive classical equations of motion for the magnetization and acou...
Quantum Generative Adversarial Autoencoders: Learning latent representations for quantum data generation
Naipunnya Raj, Rajiv Sangle, Avinash Singh +1 more·Sep 19, 2025
In this work, we introduce the Quantum Generative Adversarial Autoencoder (QGAA), a quantum model for generation of quantum data. The QGAA consists of two components: (a) Quantum Autoencoder (QAE) to compress quantum states, and (b) Quantum Generativ...
Sequential analysis in a continuous spin-noise quantum sensor
Elisabet Roda-Salichs, Giulio Gasbarri, Antoni Alou +5 more·Sep 19, 2025
Many control and detection applications require real-time analysis of signals from sensors, in order to quickly and accurately act upon events revealed by the sensors. Such signal analysis benefits from statistical models of signal and sensor behavio...
Analyzing and improving a classical Betti number estimation algorithm
Julien Sorci·Sep 19, 2025
Recently, a classical algorithm for estimating the normalized Betti number of an arbitrary simplicial complex was proposed. Motivated by a quantum algorithm with a similar Monte Carlo structure and improved sample complexity, we give a more in-depth ...
Frequency shifts due to relativistic effects and retardation in continuous variable quantum key distribution
Emanuel Schlake, Jan P. Hackstein, Roy Barzel +3 more·Sep 19, 2025
Space-based quantum communication naturally involves satellites and ground stations exchanging optical signals at high altitudes and large relative velocities. Starting from general relativistic considerations, we systematically separate the frequenc...
A State-Specific Iterative Decoupling Scheme Based on Perturbation Theory for Low-Energy Electronic States
Oussama Bindech, Saad yalouz, Vincent Robert·Sep 19, 2025
In this work, we introduce a selective and scalable extension of the multi-step Rayleigh-Schrodinger and Brillouin-Wigner perturbative scheme (see arXiv:2408.16505), designed to efficiently access the low-energy spectrum of molecular systems. The met...
Effects of time dependence in the second order coherence of pulsed light
Joscelyn van der Veen, Daniel James·Sep 19, 2025
For light in a single temporal mode, the time dependence is associated entirely with the deterministic pulse shape rather than the quantum state. This means the second order coherence of light can no longer be understood as the temporal distribution ...
Theory of Multi-photon Processes for Applications in Quantum Control
Longxiang Huang, Jacquelin Luneau, Johannes Schirk +5 more·Sep 19, 2025
We present a general theoretical framework for evaluating multi-photon processes in periodically driven quantum systems, which have been identified as a versatile tool for engineering and controlling nontrivial interactions in various quantum technol...
Integrated Telecom Wavelength Heralded Single-Photon Source based on GHz gated detectors
Maria Ana Pereira, Mingsong Wu, Arslan Sajid Raja +5 more·Sep 19, 2025
We introduce a simple and flexible concept for a heralded -- spectrally pure -- single photon source. The scheme uses a probabilistic photon pair source pumped with a CW laser, whereby a rapid gating InGaAs/InP single photon avalanche diode provides ...
Exact Relation Between Wehrl-Rényi Entropy and Many-Body Entanglement
Pengfei Zhang, Chen Xu, Peng Zhang·Sep 19, 2025
Quantum entanglement is key to understanding correlations and emergent phenomena in quantum many-body systems. For $N$ qubits (distinguishable spin-$1/2$ particles) in a pure quantum state, many-body entanglement can be characterized by the purity of...
AI Methods for Permutation Circuit Synthesis Across Generic Topologies
Victor Villar, Juan Cruz-Benito, Ismael Faro +1 more·Sep 19, 2025
This paper investigates artificial intelligence (AI) methodologies for the synthesis and transpilation of permutation circuits across generic topologies. Our approach uses Reinforcement Learning (RL) techniques to achieve near-optimal synthesis of pe...
Scalable Quantum Reinforcement Learning on NISQ Devices with Dynamic-Circuit Qubit Reuse and Grover Optimization
Thet Htar Su, Shaswot Shresthamali, Masaaki Kondo·Sep 19, 2025
A scalable and resource-efficient quantum reinforcement learning framework is presented that eliminates the linear qubit-scaling barrier in multi-step quantum Markov decision processes (QMDPs). The proposed framework integrates a QMDP formulation, dy...
Quantum Enhanced Anomaly Detection for ADS-B Data using Hybrid Deep Learning
Rani Naaman, Felipe Gohring de Magalhaes, Jean-Yves Ouattara +1 more·Sep 19, 2025
The emerging field of Quantum Machine Learning (QML) has shown promising advantages in accelerating processing speed and effectively handling the high dimensionality associated with complex datasets. Quantum Computing (QC) enables more efficient data...
Giant shot noise in superconductor/ferromagnet junctions with orbital-symmetry-controlled spin-orbit coupling
César González-Ruano, Chenghao Shen, Pablo Tuero +5 more·Sep 19, 2025
By measuring the shot noise, a consequence of charge quantization, in superconductor/insulator/ferromagnet (V/MgO/Fe) junctions, we discover a giant increase, orders of magnitude larger than expected. The origin of this giant noise is a peculiar real...
Unveiling Entanglement's Metrological Power: Empirical Modeling of Optimal States in Quantum Metrics
Volkan Erol·Sep 19, 2025
Using extensive numerical analysis of 20,000 randomly generated two-qubit states, we provide a quantitative analysis of the connection between entanglement measures and Maximized Quantum Fisher Information (MQFI). Our systematic study shows strong em...
Single-Round Deterministic Quantum Anonymous Veto Using Bell States
Ravi Sangwan, Harishankar Mishra, Henry Sukumar +1 more·Sep 19, 2025
Quantum Anonymous Veto (QAV) protocols enable secure and anonymous decision-making by allowing participants to detect the presence of a veto without revealing individual choices. While existing QAV schemes offer strong theoretical guarantees, they fa...
Quantum Metric Spaces: Replacing Fuzzy Metrics with the Hilbert Space Structure of Quantum States
Nicola Fabiano·Sep 19, 2025
Fuzzy metric spaces, grounded in t-norms and membership functions, have been widely proposed to model uncertainty in machine learning, decision systems, and artificial intelligence. Yet these frameworks treat uncertainty as an external layer of impre...
On the Hamiltonian used in Polaritonic Chemistry
Marit R. Fiechter, Mark Kamper Svendsen·Sep 19, 2025
Experiments have shown that strong coupling between molecular excitations and a mode of a Fabry--Pérot cavity can significantly alter molecular properties, such as reaction rates and equilibrium constants. However, in spite of the large body of theor...