Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Characterization of Generalized Coherent States through Intensity-Field Correlations
Ignacio Salinas Valdivieso, Victor Gondret, Gerd Hartmann S. +3 more·Dec 17, 2025
Non-Gaussian quantum states of light are essential resources for quantum information processing and precision metrology. Among them, generalized coherent states (GCS), which naturally arise from the evolution of a coherent state with a nonlinear medi...
Optimization Techniques in Quantum Information
Benjamin Desef·Dec 17, 2025
This thesis focuses on the intersection of mathematical and computational optimization and quantum information. Main contributions are open-source software code: A hybrid approach mixing "traditional" nonconvex and convex methods can make difficult p...
Implementation of the Quantum Fourier Transform on a molecular qudit with full refocusing and state tomography
Marcos Rubín-Osanz, Laura Bersani, Simone Chicco +7 more·Dec 17, 2025
Molecular spin qudits based on lanthanide complexes offer a promising platform for quantum technologies, combining chemical tunability with multi-level encoding. However, experimental demonstrations of their envisaged capabilities remain scarce, posi...
Quadratic power enhancement in extended Dicke quantum battery
Harsh Sharma, Himadri Shekhar Dhar·Dec 17, 2025
We demonstrate a quadratic enhancement of power in a battery consisting of $N$ two-level systems or spins interacting with two photonic cavity modes, where one of the modes is in the dispersive regime. In contrast to Dicke batteries, the power enhanc...
First-principles simulation of spin diffusion in static solids using dynamic mean-field theory
Timo Gräßer, Götz S. Uhrig, Matthias Ernst·Dec 17, 2025
The dynamics of disordered nuclear spin ensembles are the subject of nuclear magnetic resonance studies. Due to the through-space long-range dipolar interaction generically many spins are involved in the time evolution, so that exact brute force calc...
Photonics-Enhanced Graph Convolutional Networks
Yuan Wang, Oleksandr Kyriienko·Dec 17, 2025
Photonics can offer a hardware-native route for machine learning (ML). However, efficient deployment of photonics-enhanced ML requires hybrid workflows that integrate optical processing with conventional CPU/GPU based neural network architectures. He...
Anomalous Dynamical Scaling at Topological Quantum Criticality
Menghua Deng, Sheng Yang, Chen Sun +2 more·Dec 17, 2025
We study the nonequilibrium driven dynamics at topologically nontrivial quantum critical points (QCPs), and find that topological edge modes at criticality give rise to anomalous dynamical scaling behavior. By analyzing the driven dynamics of bulk an...
Decoherence dynamics across sub-Planckian to arbitrary scales using kitten states
Naeem Akhtar, Jia-Xin Peng, Tan Hailin +2 more·Dec 17, 2025
Environmental decoherence occurs when a quantum system interacts with its surroundings, progressively reducing quantum interference and coherence, complicating the preservation of critical quantum properties over time, especially during experimental ...
Lower Bounding the Secret Key Capacity of Bosonic Gaussian Channels via Optimal Gaussian Measurements
Giuseppe Ortolano, Stefano Pirandola, Leonardo Banchi·Dec 17, 2025
We find the maximum rate achievable in the private communication over a bosonic quantum channel with a fully Gaussian protocol based on optimal single-mode Gaussian measurements. This rate establishes a lower bound on the secret rate capacity of the ...
QuantGraph: A Receding-Horizon Quantum Graph Solver
Pranav Vaidhyanathan, Aristotelis Papatheodorou, David R. M. Arvidsson-Shukur +3 more·Dec 17, 2025
Dynamic programming is a cornerstone of graph-based optimization. While effective, it scales unfavorably with problem size. In this work, we present QuantGraph, a two-stage quantum-enhanced framework that casts local and global graph-optimization pro...
Energy Inference of Black-Box Quantum Computers Using Quantum Speed Limit
Nobumasa Ishida, Yoshihiko Hasegawa·Dec 17, 2025
Cloud-based quantum computers do not provide users with access to hardware-level information such as the underlying Hamiltonians, which obstructs the characterization of their physical properties. We propose a method to infer the energy scales of gat...
Quadratic Stability of Entropy Minimizers under Block-Separable Convex Constraints
Hassan Nasreddine·Dec 17, 2025
We investigate entropy minimization problems for quantum states subject to convex block-separable constraints. Our principal result is a quantitative stability theorem: under a natural confining (fixed-support) hypothesis, if a state has entropy with...
Benchmarking Atomic Ionization Driven by Strong Quantum Light
Yi-Jia Mao, En-Rui Zhou, Yang Li +2 more·Dec 17, 2025
The recently available high-intensity quantum light pulses provide novel tools for controlling light-matter interactions. However, the rigor of the theoretical frameworks currently used to describe the interaction of strong quantum light with atoms a...
The inverse parametric problem
Michele Cortinovis, Fabio Lingua, David B. Haviland·Dec 17, 2025
We present a method to calculate the frequency components of a pump waveform driving a parametric oscillator, which realizes a desired frequency mixing or scattering between modes. The method is validated by numerical analysis and we study its sensit...
Characterizing Fisher information of quantum measurement
Rakesh Saini, Jukka Kiukas, Daniel Burgarth +1 more·Dec 17, 2025
Informationally complete measurements form the foundation of universal quantum state reconstruction, while quantum parameter estimation is based on the local structure of the manifold of quantum states. Here we establish a general link between these ...
A short history of Quantum Illumination
Marco Genovese, Ivano Ruo-Berchera·Dec 17, 2025
Quantum illumination represents one of the most interesting examples of quantum technologies. On the one hand, it can find significant applications; on the other hand, it is one of the few quantum protocols robust against noise and losses. Here we pr...
Hamiltonian and double-bracket flow formulations of quantum measurements
Aarón Villanueva, Luis Pedro García-Pintos·Dec 17, 2025
We introduce a framework that unifies quantum measurement dynamics, Hamiltonian dynamics, and double-bracket gradient flows. We do so by providing explicit expressions for stochastic Hamiltonians that produce state dynamics identical to those that ha...
Quditto: Emulating and Orchestrating Distributed QKD Network Deployments
Blanca Lopez, Angela Diaz-Bricio, Javier Perez +2 more·Dec 17, 2025
Quantum Key Distribution (QKD) offers information-theoretic security by leveraging quantum mechanics, yet the cost and complexity of dedicated hardware and fiber infrastructure have so far limited large-scale deployment and experimentation. In this p...
Spontaneous wave function collapse from non-local gravitational self-energy
Kimet Jusufi, Douglas Singleton, Francisco S. N. Lobo·Dec 17, 2025
We incorporate non-local gravitational self-energy, motivated by string-inspired T-duality, into the Schrödinger-Newton equation. In this framework spacetime has an intrinsic non-locality, rendering the standard linear superposition principle only an...
Consecutive-gap ratio distribution for crossover ensembles
Gerson C. Duarte-Filho, Julian Siegl, John Schliemann +1 more·Dec 17, 2025
The study of spectrum statistics, such as the consecutive-gap ratio distribution, has revealed many interesting properties of many-body complex systems. Here we propose a two-parameter surmise expression for such distribution to describe the crossove...