Papers
Live trends in quantum computing research, updated daily from arXiv.
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Wichmann-Kroll vacuum polarization density in a finite Gaussian basis set
Ryan Benazzouk, Maen Salman, Trond Saue·Dec 18, 2025
This work further develops the calculation of QED effects in a finite Gaussian basis. We focus on the non-linear $α(Zα)^{n\ge 3}$ contribution to the vacuum polarization density, computing the energy shift of 1s$_{1/2}$ states of hydrogen-like ions. ...
Landscape Analysis of Excited States Calculation over Quantum Computers
Hengzhun Chen, Yingzhou Li, Bichen Lu +1 more·Dec 18, 2025
The variational quantum eigensolver (VQE) is one of the most promising algorithms for low-lying eigenstates calculation on Noisy Intermediate-Scale Quantum (NISQ) computers. Specifically, VQE has achieved great success for ground state calculations o...
Replica Keldysh field theory of quantum-jump processes: General formalism and application to imbalanced and inefficient fermion counting
Felix Kloiber-Tollinger, Lukas M. Sieberer·Dec 18, 2025
Measurement-induced phase transitions have largely been explored for projective or continuous measurements of Hermitian observables, assuming perfect detection without information loss. Yet such transitions also arise in more general settings, includ...
Rationally-extended radial harmonic oscillator in a position-dependent mass background
Christiane Quesne·Dec 18, 2025
We show that the radial harmonic oscillator problem in the position-dependent mass background of the type $m(α;r) = (1+αr^2)^{-2}$, $α>0$, can be solved by using a point canonical transformation mapping the corresponding Schrödinger equation onto tha...
Classical and quantum electromagnetic momentum in anisotropic optical waveguides
Denis Kopylov, Manfred Hammer·Dec 18, 2025
The guided modes supported by dielectric channel waveguides act as individual carriers of momentum. We show this by proving that the modes satisfy an orthogonality condition which relates to the momentum of the optical electromagnetic field, with a l...
Quantum-Inspired Ising Machines for Quantum Chemistry Calculations
Mahmood Hasani, Hadis Salasi, Negar Ashari Astani·Dec 18, 2025
Four decades after Richard Feynman's famous remark, we have reached a stage at which nature can be simulated quantum mechanically. Quantum simulation is among the most promising applications of quantum computing. However, like many quantum algorithms...
Photoacoustic model for laser-induced acoustic desorption of nanoparticles
Matthew Edmonds, James Bateman·Dec 18, 2025
Laser-induced acoustic desorption (LIAD) enables loading nanoparticles into optical traps under vacuum for levitated optomechanics experiments. Current LIAD systems rely on empirical optimization using available laboratory lasers rather than systemat...
Coined Quantum Walks on Complex Networks for Quantum Computers
Rei Sato·Dec 18, 2025
We propose a quantum circuit design for implementing coined quantum walks on complex networks. In complex networks, the coin and shift operators depend on the varying degrees of the nodes, which makes circuit construction more challenging than for re...
Instantaneous velocity during quantum tunnelling
Xiao-Wen Shang, Jian-Peng Dou, Feng Lu +3 more·Dec 18, 2025
Quantum tunnelling, a hallmark phenomenon of quantum mechanics, allows particles to pass through the classically forbidden region. It underpins fundamental processes ranging from nuclear fusion and photosynthesis to the operation of superconducting q...
Feedback Cooling and Thermometry of a Single Trapped Ion Using a Knife Edge
Hans Dang, Sebastian Luff, Martin Fischer +2 more·Dec 18, 2025
We report on the first feedback cooling of a single trapped ion below the Doppler limit of $\hbarΓ/2 k_\mathrm{B}$. The motion of a single ion is monitored in real-time and cooled up to 9-times below the Doppler cooling temperature by applying electr...
Notes on Crowther and the "Interpretation" of Quantum Mechanics (arXiv:2512.14315)
Mikołaj Sienicki, Krzysztof Sienicki·Dec 18, 2025
We read Karen Crowther's \emph{Another 100 Years of Quantum Interpretation?} with two practical goals. First, we spell out what she means by interpretation'': an attempt to provide understanding (not just predictions), which may be representationalis...
Entropy of Schwinger pair production in time-dependent Sauter pulse electric field
Zhi-Hang Yao, Hong-Hao Fan, Lie-Juan Li +2 more·Dec 18, 2025
We investigate entropy of electron-positron pair production in time-dependent Sauter pulse electric field. Both cases of pair longitudinal momentum only and full momentum consideration are examined. We further examine three types of entropy, one is t...
Prefix Sums via Kronecker Products
Aleksandros Sobczyk, Anastasios Zouzias·Dec 18, 2025
In this work, we revisit prefix sums through the lens of linear algebra. We describe an identity that decomposes triangular all-ones matrices as a sum of two Kronecker products, and apply it to design recursive prefix sum algorithms and circuits. Not...
Neutrino Propagation in Quantum Field Theory at Short and Long Baselines
Vadim A. Naumov, Dmitry S. Shkirmanov·Dec 18, 2025
In a quantum field approach to neutrino oscillations, the neutrino is treated as a propagator, while the external initial and final particle states are described by covariant wave packets. For the asymptotic behavior on short and long macroscopic bas...
QSMOTE-PGM/kPGM: QSMOTE Based PGM and kPGM for Imbalanced Dataset Classification
Bikash K. Behera, Giuseppe Sergioli, Robert Giuntini·Dec 18, 2025
Quantum-inspired machine learning (QiML) leverages mathematical frameworks from quantum theory to enhance classical algorithms, with particular emphasis on inner product structures in high-dimensional feature spaces. Among the prominent approaches, t...
Quantum Readiness in Latin American High Schools: Curriculum Compatibility and Enabling Conditions
Adriana Celeste Alvarado Leon, Osmar Denilson Herrera Cueva, Rosario Mercedes Morales Orvezo +2 more·Dec 18, 2025
The accelerating global development of quantum technologies strengthens the case for introducing quantum computing concepts before university. Yet in Latin America, there is no consolidated, region wide integration of quantum computing into secondary...
Self-testing GHZ state via a Hardy-type paradox
Smritikana Patra, Soumyajit Pal, Ranendu Adhikary·Dec 18, 2025
Self-testing is a correlation-based framework that enables the certification of both the underlying quantum state and the implemented measurements without imposing any assumptions on the internal structure of the devices. In this work, we introduce a...
Amplifying Decoherence-Free Many-Body Interactions with Giant Atoms Coupled to Parametric Waveguide
Xin Wang, Zhao-Min Gao·Dec 18, 2025
Parametric amplification offers a powerful means to enhance quantum interactions through field squeezing, yet it typically introduces additional noise which accelerates quantum decoherence, a major obstacle for scalable quantum information processing...
High-Performance Near-Infrared Quantum Emission from Color Centers in hBN
Sean Doan, Sahil D. Patel, Yilin Chen +9 more·Dec 18, 2025
Color centers hosted in hexagonal boron nitride have emerged as a highly promising platform for single-photon emission and spin-photon technologies relevant to quantum communication and quantum networking. As a wide-bandgap van der Waals material, hB...
Observation of flat-band skin effect
Xulong Wang, Dongyi Wang, Congwei Lu +4 more·Dec 18, 2025
Symmetry-protected ideal flat bands in one-dimensional (1D) Hermitian lattices are populated by compact localized states (CLS) - a special class of localization with wavefunctions confined within a small region. In this work, we discover that the non...