Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Long-ranged gates in quantum computation architectures with limited connectivity
Wolfgang Dür·Jul 11, 2025
We propose a quantum computation architecture based on geometries with nearest-neighbor interactions, including e.g. planar structures. We show how to efficiently split the role of qubits into data and entanglement-generation qubits. Multipartite ent...
Variational subspace methods and application to improving variational Monte Carlo dynamics
Adrien Kahn, Luca Gravina, Filippo Vicentini·Jul 11, 2025
We present a formalism that allows for the direct manipulation and optimization of subspaces, circumventing the need to optimize individual states when using subspace methods. Using the determinant state mapping, we can naturally extend notions such ...
Arbitrary high-fidelity binomial codes from multiphoton spin-boson interactions
Pradip Laha, Peter van Loock·Jul 11, 2025
Encoding a qubit in the continuous degrees of freedom of a quantum system, such as bosonic modes, is a powerful alternative to modern quantum error correction (QEC). Among the most prominent bosonic QEC codes, binomial codes provide protection agains...
Continuous-time parametrization of neural quantum states for quantum dynamics
Dingzu Wang, Wenxuan Zhang, Xiansong Xu +1 more·Jul 11, 2025
Neural quantum states are a promising framework for simulating many-body quantum dynamics, as they can represent states with volume-law entanglement. As time evolves, the neural network parameters are typically optimized at discrete time steps to app...
Complexity of mixed Schatten norms of quantum maps
Jan Kochanowski, Omar Fawzi, Cambyse Rouzé·Jul 11, 2025
We study the complexity of computing the mixed Schatten $\|Φ\|_{q\to p}$ norms of linear maps $Φ$ between matrix spaces. When $Φ$ is completely positive, we show that $\| Φ\|_{q \to p}$ can be computed efficiently when $q \geq p$. The regime $q \geq ...
Photonic processor benchmarking for variational quantum process tomography
Vladlen Galetsky, Paul Kohl, Janis Nötzel·Jul 11, 2025
We present a quantum-analogous experimental demonstration of variational quantum process tomography using an optical processor. This approach leverages classical one-hot encoding and unitary decomposition to perform the variational quantum algorithm ...
Literature Review of the Effect of Quantum Computing on Cryptocurrencies using Blockchain Technology
Adi Mutha, Jitendra Sandu·Jul 11, 2025
With the advent of quantum computing, cryptocurrencies that rely on blockchain technology face mounting cryptographic vulnerabilities. This paper presents a comprehensive literature review evaluating how quantum algorithms—specifically Shor’s and Gro...
Simulated non-Markovian Noise Resilience of Silicon-Based Spin Qubits with Surface Code Error Correction
Oscar Gravier, T. Ayral, Benoit Vermersch +2 more·Jul 11, 2025
We investigate the resilience of silicon-based spin qubits against non-Markovian noise within the framework of quantum error correction. We consider a realistic non-Markovian noise model that affects both the Larmor frequency and exchange energy of q...
Enhancing Decoding Performance using Efficient Error Learning
Pavithran Iyer, Aditya Jain, Stephen D. Bartlett +1 more·Jul 11, 2025
Lowering the resource overhead needed to achieve fault-tolerant quantum computation is crucial to building scalable quantum computers. We show that adapting conventional maximum likelihood (ML) decoders to a small subset of efficiently learnable phys...
Towards Solving Large QUBO Problems Using Quantum Algorithms: Improving the LogQ Scheme
Yagnik Chatterjee, J'er'emie Messud·Jul 11, 2025
The LogQ algorithm encodes Quadratic Unconstrained Binary Optimization (QUBO) problems with exponentially fewer qubits than the Quantum Approximate Optimization Algorithm (QAOA). The advantages of conventional LogQ are accompanied by a challenge rela...
Quantum Algorithm for Protein Structure Prediction Using the Face-Centered Cubic Lattice
Ruihao Li, Hakan Doga, Bryan Raubenolt +16 more·Jul 11, 2025
In this work, we present the first implementation of the face-centered cubic (FCC) lattice model for protein structure prediction with a quantum algorithm. Our motivation to encode the FCC lattice stems from our observation that the FCC lattice is mo...
Entangled Threats: A Unified Kill Chain Model for Quantum Machine Learning Security
Pascal Debus, Maximilian Wendlinger, Kilian Tscharke +7 more·Jul 11, 2025
Quantum Machine Learning (QML) systems inherit vulnerabilities from classical machine learning while introducing new attack surfaces rooted in the physical and algorithmic layers of quantum computing. Despite a growing body of research on individual ...
Robust Chiral Edge Dynamics of a Kitaev Honeycomb on a Trapped Ion Processor
Ammar Ali, Joe Gibbs, Keerthi Kumaran +6 more·Jul 11, 2025
Kitaev's honeycomb model is a paradigmatic exactly solvable system hosting a quantum spin liquid with non-Abelian anyons and topologically protected edge modes, offering a platform for fault-tolerant quantum computation. However, real candidate Kitae...
Routing Quantum Control of Causal Order
Maarten Grothus, A. Abbott, Augustin Vanrietvelde +1 more·Jul 11, 2025
In recent years, various frameworks have been proposed for the study of quantum processes with indefinite causal order. In particular, quantum circuits with quantum control of causal order (QC-QCs) form a broad class of physical supermaps obtained fr...
Approximate quantum circuit compilation for proton-transfer kinetics on quantum processors
Arseny Kovyrshin, Dilhan Manawadu, Edoardo Altamura +15 more·Jul 11, 2025
Proton transfer reactions are central to chemical and biological systems, where quantum effects—such as tunneling, delocalization, and zero-point motion—critically influence reaction kinetics. Classical methods that capture these phenomena scale poor...
Breaking a 5-Bit Elliptic Curve Key using a 133-Qubit Quantum Computer
Steve Tippeconnic·Jul 11, 2025
This experiment breaks a 5-bit elliptic curve cryptographic key using a Shor-style quantum attack. Executed on IBM's 133-qubit ibm_torino with Qiskit Runtime 2.0, a 15-qubit circuit, comprised of 10 logical qubits and 5 ancilla, interferes over an or...
On the Impact of Classical and Quantum Communication Networks Upon Modular Quantum Computing Architecture System Performance
Pau Escofet, Abhijit Das, Sahar Ben Rached +15 more·Jul 11, 2025
Modular architectures are a promising approach to scaling quantum computers beyond the limits of monolithic designs. However, non-local communications between different quantum processors might significantly impact overall system performance. In this...
Advances in Machine Learning: Where Can Quantum Techniques Help?
Samarth Kashyap, R. Ramakrishnan, Kumari Jyoti +1 more·Jul 11, 2025
Quantum Machine Learning (QML) represents a promising frontier at the intersection of quantum computing and artificial intelligence, aiming to leverage quantum computational advantages to enhance data-driven tasks. This review explores the potential ...
Quantum Algorithms for Projection-Free Sparse Convex Optimization
Jianhao He, J. C. Lui·Jul 11, 2025
This paper considers the projection-free sparse convex optimization problem for the vector domain and the matrix domain, which covers a large number of important applications in machine learning and data science. For the vector domain $\mathcal{D} \s...
Quantum register based on double quantum dots in semiconductor nanowires
V. Vyurkov, Leonid Fedichkin, I. Semenikhin +3 more·Jul 11, 2025
An implementation of a universal solid-state quantum register based on electron space states in field-defined double quantum dots (DQD possesses one electron in two adjacent tunnel bound dots) in an ultrathin semiconductor nanowire is discussed. To s...