Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Interplay of Unidirectional Quantum Strings in Kagome Rydberg Atom Array
Wei Xu, Xue-Feng Zhang·Oct 28, 2024
Leveraging the rapid development of quantum simulators, the intriguing phenomena of quantum string are observed across various quantum simulation platforms. However, the complex interplay between the quantum strings cannot be well analyzed due to the...
A variational quantum algorithm for the Poisson equation based on the banded Toeplitz systems
Xiao-qi Liu, Yue-Di Qu, Ming Li +1 more·Oct 28, 2024
To solve the Poisson equation it is usually possible to discretize it into solving the corresponding linear system Ax = b. Variational quantum algorithms (VQAs) for the discretized Poisson equation have been studied before. We present a VQA based on ...
Simulating NMR Spectra with a Quantum Computer
Joaqu'in Ossorio-Castillo, Alexandre Rodr'iguez-Coello·Oct 28, 2024
The procedure for simulating the nuclear magnetic resonance spectrum linked to the spin system of a molecule for a certain nucleus entails diagonalizing the associated Hamiltonian matrix. As the dimensions of said matrix grow exponentially with respe...
General, efficient, and robust Hamiltonian engineering
Pascal Baßler, Markus Heinrich, Martin Kliesch·Oct 25, 2024
Implementing the time evolution under a desired target Hamiltonian is critical for various applications in quantum science. Due to the exponential increase in the number of parameters with system size and experimental imperfections, this task can be ...
Thermal cycling: Evidence for a generalized tunneling model and a tool to distinguish noise sources in quantum circuits
Yigal Reiss, Moshe Schechter·Oct 25, 2024
Structural two level systems (TLSs) ubiquitous in amorphous solids are dramatically sensitive to thermal cycling to about $20$K and then back to low temperature, a process upon which the excitation energy of most TLSs is significantly changed. Using ...
Designing a Nearly Optimal Quantum Algorithm for Linear Differential Equations via Lindbladians.
Zhong-Xia Shang, N. Guo, Dong An +1 more·Oct 25, 2024
Solving linear ordinary differential equations (ODEs) is one of the most promising applications for quantum computers to demonstrate exponential advantages. The challenge of designing a quantum ODE algorithm is how to embed nonunitary dynamics into i...
Error convergence of quantum linear system solvers
M. Ginzburg, U. Marzolino·Oct 24, 2024
We analyze the performance of the Harrow-Hassidim-Lloyd algorithm (HHL algorithm) for solving linear problems and of a variant of this algorithm (HHL variant) commonly encountered in literature. This variant relieves the algorithm of preparing an ent...
Characterizing Conical Intersections of Nucleobases on Quantum Computers.
Yuchen Wang, Cameron Cianci, Irma Avdic +7 more·Oct 24, 2024
Hybrid quantum-classical computing algorithms offer significant potential for accelerating the calculation of the electronic structure of strongly correlated molecules. In this work, we present the first quantum simulation of conical intersections (C...
Iteratively decoded magic state distillation
Kwok Ho Wan·Oct 23, 2024
We present numerical simulation results for the 7-to-1 and 15-to-1 state distillation circuits, constructed using transversal CNOTs acting on multiple surface code patches. The distillation circuits are decoded iteratively using the method outlined i...
Dynamic Spectrum Access for Ambient Backscatter Communication-assisted D2D Systems with Quantum Reinforcement Learning
Nguyen Van Huynh, Bolun Zhang, Dinh-Hieu Tran +5 more·Oct 23, 2024
Spectrum access is an essential problem in device-to-device (D2D) communications. However, with the recent growth in the number of mobile devices, the wireless spectrum is becoming scarce, resulting in low spectral efficiency for D2D communications. ...
Fast classical simulation of qubit-qudit hybrid systems
Haemanth Velmurugan, Arnav Das, Turbasu Chatterjee +3 more·Oct 23, 2024
Simulating quantum circuits is a computationally intensive task that relies heavily on tensor products and matrix multiplications, which can be inefficient. Recent advancements, eliminate the need for tensor products and matrix multiplications, offer...
TE-PAI: exact time evolution by sampling random circuits
Chusei Kiumi, Bálint Koczor·Oct 22, 2024
Simulating time evolution under quantum Hamiltonians is one of the most natural applications of quantum computers. We introduce TE-PAI, which simulates time evolution exactly by sampling random quantum circuits for the purpose of estimating observabl...
Integer Factorization via Tensor Network Schnorr's Sieving
Marco Tesoro, Ilaria Siloi, Daniel Jaschke +2 more·Oct 21, 2024
Classical public-key cryptography standards rely on the Rivest-Shamir-Adleman (RSA) encryption protocol. The security of this protocol is based on the exponential computational complexity of the most efficient classical algorithms for factoring large...
Hybrid Quantum-HPC Solutions for Max-Cut: Bridging Classical and Quantum Algorithms
Ishan Patwardhan, Akhil Akkapelli·Oct 21, 2024
This research explores the integration of the Quantum Approximate Optimization Algorithm (QAOA) into Hybrid Quantum-HPC systems for solving the Max-Cut problem, comparing its performance with classical algorithms like brute-force search and greedy he...
GFlowNets for Hamiltonian decomposition in groups of compatible operators
Isaac L. Huidobro-Meezs, Jun Dai, Guillaume Rabusseau +1 more·Oct 21, 2024
Quantum computing presents a promising alternative for the direct simulation of quantum systems with the potential to explore chemical problems beyond the capabilities of classical methods. However, current quantum algorithms are constrained by hardw...
IGMaxHS - An Incremental MaxSAT Solver with Support for XOR Clauses
Ole Lübke·Oct 21, 2024
Recently, a novel, MaxSAT-based method for error correction in quantum computing has been proposed that requires both incremental MaxSAT solving capabilities and support for XOR constraints, but no dedicated MaxSAT solver fulfilling these criteria ex...
Integration of Cobalt Ferromagnetic Control Gates for Electrical and Magnetic Manipulation of Semiconductor Quantum Dots
F. Bersano, M. Aldeghi, N. Martinolli +6 more·Oct 21, 2024
The rise of electron spin qubit architectures for quantum computing processors has led to a strong interest in designing and integrating ferromagnets to induce stray magnetic fields for electron dipole spin resonance (EDSR). The integration of nanoma...
Quantifying the advantages of applying quantum approximate algorithms to portfolio optimisation
Haomu Yuan, Christopher K. Long, H. Lepage +1 more·Oct 21, 2024
We present a quantum algorithm for portfolio optimisation. Specifically, We present an end-to-end quantum approximate optimisation algorithm to solve the discrete global minimum variance portfolio model. This model finds a portfolio of risky assets w...
Trace-Distance based End-to-End Entanglement Fidelity with Information Preservation in Quantum Networks
Pankaj Kumar, Binayak Kar, Shan-Hsiang Shen·Oct 21, 2024
Quantum networks hold the potential to revolutionize a variety of fields by surpassing the capabilities of their classical counterparts. Many of these applications necessitate the sharing of high-fidelity entangled pairs among communicating parties. ...
A Hybrid Quantum Solver for the Lorenz System
S. F. Hafshejani, D. Gaur, Arundhati Dasgupta +3 more·Oct 20, 2024
We develop a hybrid classical–quantum method for solving the Lorenz system. We use the forward Euler method to discretize the system in time, transforming it into a system of equations. This set of equations is solved by using the Variational Quantum...