Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Fingerprints of cluster-based Haldane and bound-magnon states in a spin-1 Heisenberg diamond chain
Azam Zoshki, Hamid Arian Zad, Katarina Karlova +1 more·Oct 21, 2025
We investigate magnetic and thermodynamic properties of a spin-1 Heisenberg diamond chain in a magnetic field using a combination of analytical and numerical methods including the variational approach, exact diagonalization, density-matrix renormaliz...
KVASIR: A backscattering neutron spectrometer for hard condensed matter at ESS
Amalie F. Davidsen, Kristine M. L. Krighaar, Pascale P. Deen +1 more·Oct 21, 2025
We present the instrument concept for KVASIR, a backscattering indirect time-of-flight neutron spectrometer for the European Spallation Source (ESS). KVASIR will probe low lying excitations of single crystal hard condensed matter that many advanced t...
Coherence-induced deep thermalization transition in random permutation quantum dynamics
Chang Liu, Matteo Ippoliti, Wen Wei Ho·Oct 21, 2025
We report a phase transition in the projected ensemble - the collection of post-measurement wavefunctions of a local subsystem obtained by measuring its complement. The transition emerges in systems undergoing random permutation dynamics, a type of q...
Information geometry of nonmonotonic quantum natural gradient
Hideyuki Miyahara·Oct 21, 2025
Natural gradient is an advanced optimization method based on information geometry, where the Fisher metric plays a crucial role. Its quantum counterpart, known as quantum natural gradient (QNG), employs the symmetric logarithmic derivative (SLD) metr...
Burau representation, Squier's form, and non-Abelian anyons
Alexander Kolpakov·Oct 21, 2025
We introduce a frequency-tunable, two-dimensional non-Abelian control of operation order constructed from the reduced Burau representation of the braid group $B_3$, specialised at $t=e^{iω}$ and unitarized by Squier's Hermitian form. Coupled to two n...
Quantum Computing Approach to Atomic and Molecular Three-Body Systems
Mohammad Haidar, Hugo D. Nogueira, J. -Ph. Karr·Oct 20, 2025
We present high-precision quantum computing simulations of three-body atoms (He, H$^-$) and molecules (H$_2^+$, HD$^+$), the latter being studied beyond the Born-Oppenheimer approximation. The Non-Iterative Disentangled Unitary Coupled Cluster Variat...
Quantum Hamiltonian simulation of linearised Euler equations in complex geometries
Vladyslav Bohun, Andrij Kuzmak, Maciej Koch-Janusz·Oct 20, 2025
Quantum computing promises exponential improvements in solving large systems of partial differential equations (PDE), which forms a bottleneck in high-resolution computational fluid dynamics (CFD) simulations, in, among others, aerospace applications...
Experimental preparation of W states through many-body physics on a quantum simulator
Alberto Giuseppe Catalano, Ceren Dağ, Gianpaolo Torre +2 more·Oct 20, 2025
$W$ states are quantum correlated states possessing both bipartite and multipartite entanglement, which makes them useful for several quantum algorithms. We propose a protocol to generate these states by exploiting {\it topological ring frustration},...
Synthesizing an Optimal Spin Qubit Shuttling Bus Architecture for the Surface Code
Pau Escofet, Eduard Alarcón, Sergi Abadal +4 more·Oct 20, 2025
As quantum computers scale toward millions of physical qubits, it becomes essential to robustly encode individual logical qubits to ensure fault tolerance under realistic noise. A high-quality foundational encoding allows future compilation technique...
28 GHz Wireless Channel Characterization for a Quantum Computer Cryostat at 4 Kelvin
Ama Bandara, Viviana Centritto Arrojo, Heqi Deng +6 more·Oct 19, 2025
The scalability of quantum computing systems is constrained by the wiring complexity and thermal load introduced by dense wiring for control, readout and synchronization at cryogenic temperatures. To address this challenge, we explore the feasibility...
Dynamical control of quantum photon-photon interaction with phase change material
Chaojie Wang, Xutong Li, Xiuyi Ma +6 more·Oct 18, 2025
Quantum interference can produce a pivotal effective photon-photon interaction, enabling the exploration of various quantum information technologies that beyond the possibilities of classical physics. While such an effective interaction is fundamenta...
Adversarially Robust Quantum Transfer Learning
Amena Khatun, Muhammad Usman·Oct 18, 2025
Quantum machine learning (QML) has emerged as a promising area of research for enhancing the performance of classical machine learning systems by leveraging quantum computational principles. However, practical deployment of QML remains limited due to...
Globalizing the Carleman linear embedding method for nonlinear dynamics
Ivan Novikau, Ilon Joseph·Oct 17, 2025
The Carleman embedding method is a widely used technique for linearizing a system of nonlinear differential equations, but fails to converge in regions where there are multiple fixed points. We propose and test three different versions of a global pi...
Fragment, Entangle, and Consolidate: Strong Correlation through Bi-fold Quantum Circuits
Arpan Choudhury, Sonaldeep Halder, Rahul Maitra +1 more·Oct 17, 2025
An accurate description of strong correlation is quintessential for the exploration of emerging chemical phenomena. While near-term variational quantum algorithms provide a theoretically scalable framework for quantum chemical problems, the accurate ...
Benchmarking non-Clifford gates using only Pauli twirling group
Han Ye, Guoding Liu, Xiongfeng Ma·Oct 17, 2025
Quantum gate benchmarking is unavoidably influenced by state preparation and measurement errors. Randomized benchmarking addresses this challenge by employing group twirling to regularize the noise channel, then provides a characterization of quantum...
Singularity-free dynamical invariants-based quantum control
Ritik Sareen, Akram Youssry, Alberto Peruzzo·Oct 17, 2025
State preparation is a cornerstone of quantum technologies, underpinning applications in computation, communication, and sensing. Its importance becomes even more pronounced in non-Markovian open quantum systems, where environmental memory and model ...
Capturing Protein Free Energy Landscape using Efficient Quantum Encoding
Ashwini Kannan, Jaya Vasavi Pamidimukkala, Avinash Dakshinamoorthy +3 more·Oct 17, 2025
Protein folding is one of the age-old biological problems that refers to the mechanism of understanding and predicting how a protein's linear sequence of amino acids folds into its specific three dimensional structure.This structure is critical, as a...
Second-order discretization of Dyson series: iterative method, numerical analysis and applications in open quantum systems
Zhenning Cai, Yixiao Sun, Geshuo Wang·Oct 17, 2025
We propose a general strategy to discretize the Dyson series without applying direct numerical quadrature to high-dimensional integrals, and extend this framework to open quantum systems. The resulting discretization can also be interpreted as a Stra...
Trust Region Bayesian Optimization of Annealing Schedules on a Quantum Annealer
Seon-Geun Jeong, Mai Dinh Cong, Minh-Duong Nguyen +3 more·Oct 17, 2025
Quantum annealing (QA) is a practical model of adiabatic quantum computation, already realized on hardware and considered promising for combinatorial optimization. However, its performance is critically dependent on the annealing schedule due to hard...
Fundamental Limits to Cat-Code Qubits from Chaos-Assisted Tunneling
Lionel E. Martínez, Ignacio García-Mata, Diego A. Wisniacki·Oct 16, 2025
We show that chaos-assisted tunneling (CAT) imposes an intrinsic limit to the protection of Kerr-cat qubits. In the static effective description, tunneling between the quasidegenerate cat states can be exponentially suppressed, ensuring long lifetime...