Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Exploring lattice supersymmetry with variational quantum deflation
D. Schaich, C. Culver·Oct 11, 2024
Lattice studies of spontaneous supersymmetry breaking suffer from a sign problem that in principle can be evaded through novel methods enabled by quantum computing. Focusing on lower-dimensional lattice systems with more modest resource requirements,...
Analog simulation of noisy quantum circuits
Etienne Granet, Kévin Hémery, Henrik Dreyer·Oct 11, 2024
It is well known that simulating quantum circuits with low but nonzero hardware noise is more difficult than without noise. It requires either to perform density matrix simulations (coming with a space overhead) or to sample over “quantum trajectorie...
QCircuitBench: A Large-Scale Dataset for Benchmarking Quantum Algorithm Design
Rui Yang, Ziruo Wang, Yuntian Gu +3 more·Oct 10, 2024
Quantum computing is an emerging field recognized for the significant speedup it offers over classical computing through quantum algorithms. However, designing and implementing quantum algorithms pose challenges due to the complex nature of quantum m...
Simulating the Fermi-Hubbard model with long-range hopping on a quantum computer
Tatiana A. Bespalova, Karlo Deli'c, G. Pupillo +2 more·Oct 10, 2024
We investigate the performance and accuracy of digital quantum algorithms for the study of static and dynamic properties of the fermionic Hubbard model at half-filling with next-nearest neighbour hopping terms. We provide quantum circuits to perform ...
Galois Symmetries in the Classification and Quantification of Quantum Entanglement
Bilal Benzimoun, A. Sajia·Oct 10, 2024
Quantum entanglement, a cornerstone of quantum mechanics, remains challenging to classify, particularly in multipartite systems. Here, we present a new interpretation of entanglement classification by revealing a profound connection to Galois groups,...
Thresholds for Postselected Quantum Error Correction from Statistical Mechanics.
Lucas H. English, Dominic J. Williamson, Stephen D. Bartlett·Oct 10, 2024
We identify regimes where postselection can be used scalably in quantum error correction (QEC) to improve performance. We use statistical mechanical models to analytically quantify the performance and thresholds of postselected QEC, with a focus on t...
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...