Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
A Quantum Algorithm for the Finite Element Method
Ahmad M. Alkadri, Tyler D. Kharazi, K. Birgitta Whaley +1 more·Oct 20, 2025
The finite element method (FEM) is a cornerstone numerical technique for solving partial differential equations (PDEs). Here, we present $\textbf{Qu-FEM}$, a fault-tolerant era quantum algorithm for the finite element method. In contrast to other qua...
Application Scale Quantum Circuit Compilation with Controlled Error
Justin Kalloor, Lucas Kovalsky, Mathias Weiden +4 more·Oct 20, 2025
Compilation and optimization of quantum circuits are critical components in the execution of algorithms on quantum computers. These components must successfully balance two competing priorities: minimizing the number of expensive resources, such as t...
Hardware-efficient formulation of molecular cavity-QED Hamiltonians
Francesco Troisi, Simone Latini, Heiko Appel +3 more·Oct 20, 2025
Light-matter coupled Hamiltonians are central to cavity materials engineering and polaritonic chemistry, but are challenging to simulate with classical hardware due to the scaling of the Hilbert space with the number of quantum photon modes and matte...
Trapped-ion two-qubit gates with >99.99% fidelity without ground-state cooling
A. C. Hughes, R. Srinivas, C. M. Löschnauer +6 more·Oct 20, 2025
We introduce the 'smooth gate', an entangling method for trapped-ion qubits where residual spin-motion entanglement errors are adiabatically eliminated by ramping the gate detuning. We demonstrate electronically controlled two-qubit gates with an est...
Hybrid Cramér-Rao bound for Quantum Bayes-Point Estimation with Nuisance Parameters
Jianchao Zhang, Jun Suzuki·Oct 19, 2025
We develop a hybrid framework for quantum parameter estimation in the presence of nuisance parameters. In this Bayes-point scheme, the parameters of interest are treated as fixed non-random parameters while nuisance parameters are integrated out with...
Phase gadget compilation of quantum circuits using multiqubit gates
Jonathan Nemirovsky, Maya Chuchem, Lee Peleg +3 more·Oct 19, 2025
Quantum circuit synthesis and compilation are critical components in the quantum computing stack, both for contemporary quantum systems, where efficient use of limited resources is essential, as well as for large-scale fault-tolerant platforms, where...
Symmetric Reduction Techniques for Quantum Graph Colouring
Lord Sen, Shyamapada Mukherjee·Oct 19, 2025
This paper introduces an efficient quantum computing method for reducing special graphs in the context of the graph coloring problem. The special graphs considered include both symmetric and non-symmetric graphs where the axis passes through nodes on...
Exact Quantum Circuit Optimization is co-NQP-hard
Adam Husted Kjelstrøm, Andreas Pavlogiannis, Jaco van de Pol·Oct 18, 2025
As quantum computing resources remain scarce and error rates high, minimizing the resource consumption of quantum circuits is essential for achieving practical quantum advantage. Here we consider the natural problem of, given a circuit $C$, computing...
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...
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...
Quantum Voting Protocol for Centralized and Distributed Voting Based on Phase-Flip Counting
Ali Emre Aydin, Ammar Daskin·Oct 17, 2025
We introduce a quantum voting protocol that uses superposition and entanglement to enable secure, anonymous voting in both centralized and distributed settings. Votes are encoded via phase-flip operations on entangled candidate states, controlled by ...
Efficient encoding of the 2D toric code logical state using local Clifford gates
Ivan H. C. Shum·Oct 16, 2025
An algorithm which encodes the $L\times L$ 2D toric code logical state with a circuit of depth $2L+1$, using only local controlled-NOT($CX$) and Hadamard($H$) gates, is presented.
Offline Dedicated Quantum Attacks on Block Ciphers Constructions Based on Two Parallel Permutation-Based Pseudorandom Functions
Xiao-Fan Zhen, Zhen-Qiang Li, Jia-Cheng Fan +2 more·Oct 16, 2025
Quantum cryptanalysis is essential for evaluating the security of cryptographic systems against the threat of quantum computing. Recently, Shi {\it et al.} introduced a dedicated quantum attack on block cipher constructions based on XOR-type function...
Reduced constant-cost implementations of Clifford operations using global interactions
Jonathan Nemirovsky, Lee Peleg, Amit Ben Kish +1 more·Oct 15, 2025
We investigate quantum circuits built from arbitrary single-qubit operations combined with programmable all-to-all multiqubit entangling gates that are native to, among other systems, trapped-ion quantum computing platforms. We report a constant-cost...
Non-Clifford Fusion: T-Gate Optimization for Quantum Simulation
Yingheng Li, Xulong Tang, Paul Hovland +1 more·Oct 15, 2025
Hamiltonian simulation is a key quantum algorithm for modeling complex systems. To implement a Hamiltonian simulation, it is typically decomposed into a list of Pauli strings, each corresponds to an RZ rotation gate with many Clifford gates. These RZ...
Lattice surgery with Bell measurements: Modular fault-tolerant quantum computation at low entanglement cost
Trond Hjerpekjøn Haug, Timo Hillmann, Anton Frisk Kockum +1 more·Oct 15, 2025
Modular architectures are a promising approach to scaling quantum computers to fault tolerance. Small, low-noise quantum processors connected through relatively noisy quantum links are capable of fault-tolerant operation as long as the noise can be c...
Quantum Generative Modeling of Single-Cell transcriptomes: Capturing Gene-Gene and Cell-Cell Interactions
Selim Romero, Vignesh S. Kumar, Robert S. Chapkin +1 more·Oct 14, 2025
Single-cell RNA sequencing (scRNA-seq) data simulation is limited by classical methods that rely on linear correlations, failing to capture the intrinsic, nonlinear dependencies. No existing simulator jointly models gene-gene and cell-cell interactio...
Trajectory-Protected Quantum Computing
Barbara Šoda, Pierre-Antoine Graham, T. Rick Perche +1 more·Oct 14, 2025
We introduce a novel method that simultaneously isolates a quantum computer from decoherence and enables the controlled implementation of computational gates. We demonstrate a quantum computing model that utilizes a qubit's motion to protect it from ...
Probabilistic Links Between Quantum Classification of Patterns of Boolean Functions and Hamming Distance
Theodore Andronikos, Constantinos Bitsakos, Konstantinos Nikas +2 more·Oct 14, 2025
This article investigates the probabilistic relationship between quantum classification of Boolean functions and their Hamming distance. By integrating concepts from quantum computing, information theory, and combinatorics, we explore how Hamming dis...
Variational Quantum Eigensolver Models of Molecular Quantum Dot Cellular Automata
Nischal Binod Gautam, Enrique P. Blair·Oct 14, 2025
Molecular quantum-dot Cellular Automata (QCA) may provide low-power, high-speed computational hardware for processing classical information. Simulation and modeling play an important role in the design of QCA circuits because fully-coherent models of...