Papers
Live trends in quantum computing research, updated daily from arXiv.
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Non-radiative energy transfer between boron vacancies in hexagonal boron nitride and other 2D materials
Fraunié Jules, Mikhail M. Glazov, Sébastien Roux +13 more·Dec 3, 2025
Boron vacancies ($V_B^-$) in hexagonal boron nitride (hBN) have emerged as a promising platform for two-dimensional quantum sensors capable of operating at atomic-scale proximity. However, the mechanisms responsible for photoluminescence quenching in...
Image Theory for the Single Bounce Quantum Gravimeter
Joachim Guyomard, Serge Reynaud, Pierre Cladé·Dec 3, 2025
We develop an image theory for the recently proposed single-bounce quantum gravimeter. Free fall and quantum bounce of a matter wave-packet are described through decompositions over a basis of continuous energies. This leads to a much clearer interpr...
Thermodynamics of an Open $\mathcal{PT-}$Symmetric Quantum System
Baibhab Bose, Devvrat Tiwari, Subhashish Banerjee·Dec 3, 2025
For a subclass of a general $\mathcal{PT}-$symmetric Hamiltonian obeying anti-commutation relation with its conjugate, a Hermitian basis is found that spans the bi-orthonormal energy eigenvectors. Using the modified projectors constructed from these ...
Phase-space open-systems dynamics of second-order nonlinear interactions with pulsed quantum light
Emanuel Hubenschmid, Victor Rueskov Christiansen·Dec 3, 2025
The theoretical description of broadband, multimode quantum pulses undergoing a second-order $χ^{(2)}$-nonlinear interaction can be quite intricate, due to the large dimensionality of the underlying phase space. However, in many cases only a few broa...
Rethinking Collapse: Coupling Quantum States to Classical Bits with quasi-probabilities
Dagomir Kaszlikowski, Pawel Kurzynski·Dec 3, 2025
We propose a formulation of quantum measurement within a modified framework of frames, in which a quantum system - a single qubit - is directly coupled to a classical measurement bit. The qubit is represented as a positive probability distribution ov...
Towards Quantum Stochastic Optimization for Energy Systems under Uncertainty: Joint Chance Constraints with Quantum Annealing
David Ribes, Tatiana Gonzalez Grandon·Dec 3, 2025
Uncertainty is fundamental in modern power systems, where renewable generation and fluctuating demand make stochastic optimization indispensable. The chance constrained unit commitment problem (UCP) captures this uncertainty but rapidly becomes compu...
Experimental Quantum Electronic Voting
Nicolas Laurent-Puig, Matilde Baroni, Federico Centrone +1 more·Dec 3, 2025
Quantum information protocols offer significant advantages in properties such as security, anonymity, and privacy for communication and computing tasks. An application where guaranteeing the highest possible security and privacy is critical for democ...
Polylogarithmic-Depth Quantum Algorithm for Simulating the Extended Hubbard Model on a Two-Dimensional Lattice Using the Fast Multipole Method
Yu Wang, Martina Nibbi, Maxine Luo +4 more·Dec 3, 2025
The extended Hubbard model on a two-dimensional lattice captures key physical phenomena, but is challenging to simulate due to the presence of long-range interactions. In this work, we present an efficient quantum algorithm for simulating the time ev...
Laser-induced modulation of conductance in graphene with magnetic barriers
Rachid El Aitouni, Miloud Mekkaoui, Pablo Díaz +2 more·Dec 3, 2025
We study how electrons move across a graphene sheet when it encounters two magnetic barriers with a region in between that is continuously driven by laser light. Rather than acting as a static obstacle, this illuminated middle section becomes a Floqu...
Modelling the Impact of Device Imperfections on Electron Shuttling in SiMOS devices
Jack J. Turner, Christian W. Binder, Guido Burkard +1 more·Dec 3, 2025
Extensive theoretical and experimental work has established high-fidelity electron shuttling in Si/SiGe systems, whereas demonstrations in Si/SiO2 (SiMOS) remain at an early stage. To help address this, we perform full 3D simulations of conveyor-belt...
Density of states of quantum systems from free probability theory: a brief overview
Keun-Young Kim, Kuntal Pal·Dec 3, 2025
We provide a brief overview of approaches for calculating the density of states of quantum systems and random matrix Hamiltonians using the tools of free probability theory. For a given Hamiltonian of a quantum system or a generic random matrix Hamil...
Solution of the Electric Field Integral Equation Using a Hybrid Quantum-Classical Scheme: Investigation of Accuracy and Efficiency
Rui Chen, Teng-Yang Ma, Meng-Han Dou +1 more·Dec 3, 2025
Conventional classical solvers are commonly used for solving matrix equation systems resulting from the discretization of SIEs in computational electromagnetics (CEM). However, the memory requirement would become a bottleneck for classical computing ...
Quantum Algorithm for Searching for the Longest Segment and the Largest Empty Rectangle
Kamil Khadiev, Vladislav Remidovskii, Timur Bikmullin +1 more·Dec 3, 2025
In the paper, we consider the problem of searching for the Largest empty rectangle in a 2D map, and the one-dimensional version of the problem is the problem of searching for the largest empty segment. We present a quantum algorithm for the Largest E...
Quantum Simulations of Opinion Dynamics
Xingyu Guo, Xiaoyang Wang, Lingxiao Wang·Dec 3, 2025
Consensus formation is a central problem in collective behavior. In this work, we develop quantum models of opinion dynamics that can be exactly solved and implemented on current quantum hardware. By exploiting quantum superposition, measurement-indu...
Metrological Sensitivity beyond Gaussian Limits with Cubic Phase States
Jiajie Guo, Shuheng Liu, Boxuan Jing +2 more·Dec 3, 2025
Cubic phase states provide the essential non-Gaussian resource for continuous-variable quantum computing. We show that they also offer significant potential for quantum metrology, surpassing the phase-sensing sensitivity of all Gaussian states at equ...
An end-to-end quantum algorithm for nonlinear fluid dynamics with bounded quantum advantage
David Jennings, Kamil Korzekwa, Matteo Lostaglio +3 more·Dec 3, 2025
Computational fluid dynamics (CFD) is a cornerstone of classical scientific computing, and there is growing interest in whether quantum computers can accelerate such simulations. To date, the existing proposals for fault-tolerant quantum algorithms f...
Widefield Quantum Sensor for Vector Magnetic Field Imaging of Micromagnetic Structures
Orlando D. Cunha, Filipe Camarneiro, João P. Silva +4 more·Dec 3, 2025
Many spintronic, magnetic-memory, and neuromorphic devices rely on spatially varying magnetic fields. Quantitatively imaging these fields with full vector information over extended areas remains a major challenge. Existing probes either offer nanosca...
Quantum Max Cut for complete tripartite graphs
Tea Štrekelj·Dec 3, 2025
The Quantum Max-$d$-Cut ($d$-QMC) problem is a special instance of a $2$-local Hamiltonian problem, representing the quantum analog of the classical Max-$d$-Cut problem. The $d$-QMC problem seeks the largest eigenvalue of a Hamiltonian defined on a g...
Non-Gaussian Dissipative Quantum Thermometry Beyond Gaussian Bounds
Pritam Chattopadhyay·Dec 3, 2025
The fundamental metrological limits of temperature sensing in open quantum systems remain largely unresolved, particularly regarding the role of non-Gaussian quantum resources. In this letter, we establish analytic bounds on the quantum Fisher inform...
Geometrical structure of the Wigner flow information quantifiers and hyperbolic stability in the phase-space framework
Alex E. Bernardini·Dec 3, 2025
Quantifiers of stationarity, classicality, purity and vorticity are derived from phase-space differential geometrical structures within the Weyl-Wigner framework, after which they are related to the hyperbolic stability of classical and quantum-modif...