Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Modularity Maximization and Community Detection in Complex Networks Through Recursive and Hierarchical Annealing in the DWAVE Advantage Quantum Processing Units
Joan Falc'o-Roget, Kacper Jurek, Barbara Wojtarowicz +2 more·Oct 10, 2024
Quantum adiabatic optimization has long been expected to outperform classical methods in solving NP-type problems. While this has been proven in certain experiments, its main applications still reside in academic problems where the size of the system...
Quantum optical neural networks with programmable nonlinearities
E. Chernykh, M. Saygin, G. Struchalin +2 more·Oct 10, 2024
Parametrized quantum circuits are essential components of variational quantum algorithms. Until now, optical implementations of these circuits have relied solely on adjustable linear optical units. In this study, we demonstrate that using programmabl...
D-Wave’s Nonlinear-Program Hybrid Solver: Description and Performance Analysis
E. Osaba, Pablo Miranda-Rodríguez·Oct 10, 2024
The development of advanced quantum-classical algorithms is among the most prominent strategies in quantum computing. Numerous hybrid solvers have been introduced recently. Many of these methods are created ad hoc to address specific use cases. Howev...
Securing HHL Quantum Algorithm against Quantum Computer Attacks
Yizhuo Tan, Hrvoje Kukina, Jakub Szefer·Oct 10, 2024
The advent of shared, cloud-based quantum computers introduces critical security vulnerabilities. This work identifies and demonstrates two novel attacks against the important HHL algorithm. The two attacks are the Improper Initialization Attack (IIA...
Non-binary artificial neuron with phase variation implemented on a quantum computer
Jhordan Silveira de Borba, Jonas Maziero·Oct 10, 2024
The first artificial quantum neuron models followed a similar path to classic models and they work only with discrete values. Here we introduce an algorithm that generalizes the binary model manipulating the phase of complex numbers. We propose, test...
Quantum simulation of single-server Markovian queues: A dynamic amplification approach
Michal Koren, Or Peretz·Oct 10, 2024
Quantum computing is revolutionizing various fields, including operations research and queueing theory. This study presents a quantum method for simulating single-server Markovian (M/M/1) queues, making quantum computing more accessible to researcher...
Characterizing quantum codes via the coefficients in Knill-Laflamme conditions
Mengxin Du, Chao Zhang, Y. Poon +1 more·Oct 10, 2024
Quantum error correction (QEC) is essential for protecting quantum information against noise, yet understanding the structure of the Knill-Laflamme (KL) coefficients λij\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepacka...
The Space Just Above One Clean Qubit
Dale Jacobs, Saeed Mehraban·Oct 10, 2024
Consider the model of computation where we start with two halves of a $2n$-qubit maximally entangled state. We get to apply a universal quantum computation on one half, measure both halves at the end, and perform classical postprocessing. This model,...
Inequality constraints in variational quantum circuits with qudits
Alberto Bottarelli, Sebastian Schmitt, Philipp Hauke·Oct 10, 2024
Quantum optimization is emerging as a prominent candidate for exploiting the capabilities of near-term quantum devices. Many application-relevant optimization tasks require the inclusion of inequality constraints, usually handled by enlarging the Hil...
Enhanced Fault-tolerance in Photonic Quantum Computing: Comparing the Honeycomb Floquet Code and the Surface Code in Tailored Architecture
Théo Dessertaine, Boris Bourdoncle, Aurélie Denys +5 more·Oct 9, 2024
Fault-tolerant quantum computing is crucial for realizing large-scale quantum computation, and the interplay between hardware architecture and quantum error-correcting codes is a key consideration. We present a comparative study of two quantum error-...
On the Computational Power of QAC0 with Barely Superlinear Ancillae
Anurag Anshu, Yangjing Dong, Fengning Ou +1 more·Oct 9, 2024
$\mathrm{QAC}^0$ is the family of constant-depth polynomial-size quantum circuits consisting of arbitrary single qubit unitaries and multi-qubit Toffoli gates. It was introduced by Moore [arXiv: 9903046] as a quantum counterpart of $\mathrm{AC}^0$, a...
Shortcuts to adiabatic non-Abelian braiding on silicon photonic chips
Wange Song, Xuanyu Liu, Jiacheng Sun +6 more·Oct 9, 2024
Non-Abelian braiding describes the exchange behavior of anyons, useful for encoding qubits for quantum computing. Recently, this concept has been realized in classical photonic and acoustic systems. However, these implementations are constrained by a...
Application of large language models to quantum state simulation
Shuangxiang Zhou, Ronghang Chen, Zheng An +2 more·Oct 9, 2024
Quantum computers leverage the unique advantages of quantum mechanics to achieve acceleration over classical computers for certain problems. Currently, various quantum simulators provide powerful tools for researchers, but simulating quantum evolutio...
Bootstrapping the stationary state of bosonic open quantum systems
Gustave Robichon, A. Tilloy·Oct 9, 2024
We propose a method to compute expectation values of observables in the stationary state of a (Markovian) bosonic open quantum system. Using a hierarchy of semi-definite relaxations, we obtain finer and finer upper and lower bounds to any expectation...
Universal transversal gates
Pragati Gupta, Andrea Morello, Barry C. Sanders·Oct 9, 2024
A long-standing challenge in quantum error correction is the infeasibility of universal transversal gates, as shown by the Eastin-Knill theorem. We obtain a necessary and sufficient condition for a quantum code to have universal transversal gates and...
The State of Factoring on Quantum Computers
F. Lechermann·Oct 9, 2024
We report on the current state of factoring integers on both digital and analog quantum computers. For digital quantum computers, we study the effect of errors for which one can formally prove that Shor's factoring algorithm fails. For analog quantum...
Role of Coherence for Quantum Computational Advantage.
Hugo Thomas, P. Emeriau, R. Mezher +3 more·Oct 9, 2024
Quantifying the resources available to a quantum computer appears to be necessary to separate quantum from classical computation. Among them, entanglement, nonstabilizerness, and coherence are arguably of great significance. We introduce "path cohere...
ONDA: A High-Level Quantum Programming Language with Sequential Execution and Conditional Branching
F. Gregorio·Oct 9, 2024
This paper introduces ONDA, a quantum programming language designed to significantly simplify quantum programming by providing multiple abstraction layers similar to those found in classical computing. Unlike traditional quantum programming languages...
Effects of dissipation in reservoir computing using spin qubit array
Shion Mifune, T. Kanao, T. Tanamoto·Oct 9, 2024
Reservoir computing (RC) is one of the hottest topics as a promising application for many physical devices because their device characteristics can be directly used in computing sequences. Quantum RC is also a promising candidate for the application ...
Toward hybrid quantum simulations with qubits and qumodes on trapped-ion platforms
Jack Y. Araz, Matt Grau, Jake Montgomery +1 more·Oct 9, 2024
We explore the feasibility of gate-based hybrid quantum computing using both discrete (qubit) and continuous (qumode) variables on trapped-ion platforms. Trapped-ion systems have demonstrated record one- and two-qubit gate fidelities and long qubit c...