Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Monogamy of Entanglement Bounds and Improved Approximation Algorithms for Qudit Hamiltonians
Zackary Jorquera, Alexandra Kolla, Steven Kordonowy +2 more·Oct 21, 2024
We prove new monogamy of entanglement bounds for two-local qudit Hamiltonians of rank-one projectors without one-local terms. In particular, we certify the maximum energy in terms of the maximum matching of the underlying interaction graph via low-de...
Maximally entangled gluons for any $x$
Yoshitaka Hatta, Jake Montgomery·Oct 21, 2024
Individual quarks and gluons at small-$x$ inside an unpolarized hadron can be regarded as Bell states in which qubits in the spin and orbital angular momentum spaces are maximally entangled. Using the machinery of quantum information science, we gene...
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...
Semiconductor Circuits for Quantum Computing with Electronic Wave Packets
David Pomaranski, Ryo Ito, N. Tu +7 more·Oct 21, 2024
Standard approaches to quantum computing require significant overhead to correct for errors. The hardware size for conventional quantum processors in solids often increases linearly with the number of physical qubits, such as for transmon qubits in s...
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...
Sample Optimal and Memory Efficient Quantum State Tomography
Yanglin Hu, Enrique Cervero-Mart'in, Elias Theil +2 more·Oct 21, 2024
Quantum state tomography is the fundamental physical task of learning a complete classical description of an unknown state of a quantum system given coherent access to many identical samples of it. The complexity of this task is commonly characterise...
Projective Quantum Eigensolver with Generalized Operators
D. Mondal, Chayan Patra, Dipa Halder +1 more·Oct 21, 2024
Determination of molecular energetics and properties is one of the core challenges in the near-term quantum computing. To this end, hybrid quantum-classical algorithms are preferred for Noisy Intermediate Scale Quantum (NISQ) architectures. The Proje...
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. ...
Quantum Algorithms for Non-smooth Non-convex Optimization
Chengchang Liu, Chaowen Guan, Jianhao He +1 more·Oct 21, 2024
This paper considers the problem for finding the $(\delta,\epsilon)$-Goldstein stationary point of Lipschitz continuous objective, which is a rich function class to cover a great number of important applications. We construct a zeroth-order quantum e...
Runtime Reduction in Linear Quantum Charge-Coupled Devices using the Parity Flow Formalism
F. Dom'inguez, M. Fellner, Berend Klaver +3 more·Oct 21, 2024
Using the Parity Flow formalism, we show that physical SWAP gates can be eliminated in linear hardware architectures, without increasing the total number of two-qubit operations. This has a significant impact on the execution time of quantum circuits...
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...
Quantum Convolutional Neural Network: A Hybrid Quantum-Classical Approach for Iris Dataset Classification
S. Yousuf, Iqbal Tomal, Abdullah Al Shafin +2 more·Oct 21, 2024
This paper presents a hybrid quantum-classical machine learning model for classification tasks, integrating a 4-qubit quantum circuit with a classical neural network. The quantum circuit is designed to encode the features of the Iris dataset using an...
Quantum Computing for Partition Function Estimation of a Markov Random Field in a Radar Anomaly Detection Problem
Timothe Presles, Cyrille Enderli, Gilles Burel +1 more·Oct 21, 2024
In probability theory, the partition function is a factor used to reduce any probability function to a density function with total probability of one. Among other statistical models used to represent joint distribution, Markov random fields (MRF) can...
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...
Cryogenic Control and Readout Integrated Circuits for Solid-State Quantum Computing
Lingxiao Lei, Heng Huang, Pingxing Chen +1 more·Oct 21, 2024
In the pursuit of quantum computing, solid-state quantum systems, particularly superconducting ones, have made remarkable advancements over the past two decades. However, achieving fault-tolerant quantum computing for next-generation applications nec...
Industry-compatible silicon spin-qubit unit cells exceeding 99% fidelity
P. Steinacker, N. Dumoulin Stuyck, W. H. Lim +26 more·Oct 21, 2024
Among the many types of qubit presently being investigated for a future quantum computer, silicon spin qubits with millions of qubits on a single chip are uniquely positioned to enable quantum computing. However, it has not been clear whether the out...
A Quantum Optimization Algorithm for Optimal Electric Vehicle Charging Station Placement for Intercity Trips
Tina Radvand, Alireza Talebpour·Oct 21, 2024
Electric vehicles (EVs) play a significant role in enhancing the sustainability of transportation systems. However, their widespread adoption is hindered by inadequate public charging infrastructure, particularly to support long-distance travel. Iden...
Near-Optimal Quantum Algorithm for Finding the Longest Common Substring between Run-Length Encoded Strings
Tzu-Ching Lee, Han-Hsuan Lin·Oct 21, 2024
We give a near-optimal quantum algorithm for the longest common substring (LCS) problem between two run-length encoded (RLE) strings, with the assumption that the prefix-sums of the run-lengths are given. Our algorithm costs $\tilde{\mathcal{O}}(n^{2...
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...
Does quantum lattice sieving require quantum RAM?
Beomgeun Cho, Minki Hhan, Taehyun Kim +2 more·Oct 21, 2024
In this paper, we study the requirement for quantum random access memory (QRAM) in quantum lattice sieving, a fundamental algorithm for lattice-based cryptanalysis. First, we obtain a lower bound on the cost of quantum lattice sieving with a bounded ...