Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Implementing transferable annealing protocols for combinatorial optimization on neutral-atom quantum processors: A case study on smart charging of electric vehicles
L. Leclerc, Constantin Dalyac, Pascale Bendotti +3 more·Nov 25, 2024
In the quantum optimization paradigm, variational quantum algorithms face challenges with hardware-specific and instance-dependent parameter tuning, which can lead to computational inefficiencies. The promising potential of parameter transferability ...
Understanding the Scalability of Circuit Cutting Techniques for Practical Quantum Applications
Songqinghao Yang, Prakash Murali·Nov 25, 2024
Circuit cutting allows quantum circuits larger than the available hardware to be executed. Cutting techniques split circuits into smaller subcircuits, run them on the hardware, and recombine results through classical post-processing. Circuit cutting ...
Variational quantum subspace construction via symmetry-preserving cost functions
H. A. Akande, A. Perrin, Bruno Senjean +1 more·Nov 25, 2024
Determining low-energy eigenstates in electronic many-body quantum systems is a key challenge in computational chemistry and condensed-matter physics. Hybrid quantum-classical approaches, such as the Variational Quantum Eigensolver and Quantum Subspa...
Protomon: A Multimode Qubit in the Fluxonium Molecule
Shashwat Kumar, X. You, Xanthe Croot +7 more·Nov 25, 2024
Qubits that are intrinsically insensitive to depolarization and dephasing errors promise to significantly reduce the overhead of fault-tolerant quantum computing. At their optimal operating points, the logical states of these qubits exhibit both expo...
Boundaries for quantum advantage with single photons and loop-based time-bin interferometers
Samo Nov'ak, David D. Roberts, Alexander Makarovskiy +2 more·Nov 25, 2024
Loop-based boson samplers interfere photons in the time degree of freedom using a sequence of delay lines. Since they require few hardware components while also allowing for long-range entanglement, they are strong candidates for demonstrating quantu...
QUBO Refinement: Achieving Superior Precision through Iterative Quantum Formulation with Limited Qubits
Hyunju Lee, Kyungtaek Jun·Nov 25, 2024
In the era of quantum computing, the emergence of quantum computers and subsequent advancements have led to the development of various quantum algorithms capable of solving linear equations and eigenvalues, surpassing the pace of classical computers....
Distributing Quantum Computations, Shot-wise
Giuseppe Bisicchia, Giuseppe Clemente, J. García-Alonso +3 more·Nov 25, 2024
NISQ (Noisy Intermediate-Scale Quantum) era constraints, high sensitivity to noise and limited qubit count, impose significant barriers on the usability of QPUs (Quantum Process Units) capabilities. To overcome these challenges, researchers are explo...
Soft information decoding with superconducting qubits
Maurice D. Hanisch, Bence Het'enyi, James R. Wootton·Nov 25, 2024
Quantum error correction promises a viable path to fault-tolerant computations, enabling exponential error suppression when the device's error rates remain below the protocol's threshold. This threshold, however, strongly depends on the classical met...
Factoring integers via Schnorr's algorithm assisted with VQE
Luis S'anchez Cano, Gin'es Carrascal de las Heras, Guillermo Botella Juan +1 more·Nov 25, 2024
Current asymmetric cryptography is based on the principle that while classical computers can efficiently multiply large integers, the inverse operation, factorization, is significantly more complex. For sufficiently large integers, this factorization...
Krylov complexity in the Schrödinger field theory
Peng-Zhang He, Hai-Qing Zhang·Nov 25, 2024
We investigate the Krylov complexity of Schrödinger field theories, focusing on both bosonic and fermionic systems within the grand canonical ensemble which includes a chemical potential. Krylov complexity measures operator growth in quantum systems ...
A Dequantized Algorithm for the Guided Local Hamiltonian Problem
Yukun Zhang, Yusen Wu, Xiao Yuan·Nov 25, 2024
The local Hamiltonian (LH) problem, the quantum analog of the classical constraint satisfaction problem, is a cornerstone of quantum computation and complexity theory. It is known to be QMA-complete, indicating that it is challenging even for quantum...
Limitations of tensor-network approaches for optimization and sampling: A comparison to quantum and classical Ising machines
A. M. Dziubyna, Tomasz Śmierzchalski, Bartłomiej Gardas +2 more·Nov 25, 2024
Optimization problems pose challenges across various fields. In recent years, quantum annealers have emerged as a promising platform for tackling such challenges. To provide a new perspective, we develop a heuristic tensor network (TN) based algorith...
A Differentially Private Quantum Neural Network for Probabilistic Optimal Power Flow
Yuji Cao, Yue Chen, Yan Xu·Nov 25, 2024
The stochastic nature of renewable energy and load demand requires efficient and accurate solutions for probabilistic optimal power flow (OPF). Quantum neural networks (QNNs), which combine quantum computing and machine learning, offer computational ...
A Review of Design Concerns in Superconducting Quantum Circuits
Eli M. Levenson-Falk, S. Shanto·Nov 25, 2024
In this short review we describe the process of designing a superconducting circuit device for quantum information applications. We discuss the factors that must be considered to implement a desired effective Hamiltonian on a device. We describe th...
Subsystem Decompositions of Quantum Evolutions and Transformations between Causal Perspectives.
Julian Wechs, O. Oreshkov·Nov 25, 2024
One can theoretically conceive of processes in which quantum operations are composed cyclically in a way that is incompatible with a well-defined causal order. Some of these processes can be realized within standard quantum temporal evolutions on sys...
Enhancing Quantum Diffusion Models with Pairwise Bell State Entanglement
Shivalee Shah, M. Vatsa·Nov 24, 2024
This paper introduces a novel quantum diffusion model designed for Noisy Intermediate-Scale Quantum (NISQ) devices. Unlike previous methods, this model efficiently processes higher-dimensional images with complex pixel structures, even on qubit-limit...
ShaNQar: Simulator of Network Quantique
Anand Choudhary, A. Wasan·Nov 24, 2024
The nature-inspired field of quantum communication has witnessed exciting developments over the past few years with countries all over the world working hard to scale their experimental quantum networks to larger sizes and increased coverage. Evident...
Reformulating regression test suite optimization using quantum annealing - an empirical study
Antonio Trovato, Manuel De Stefano, Fabiano Pecorelli +2 more·Nov 24, 2024
Maintaining software quality is crucial in the dynamic landscape of software development. Regression testing ensures that software works as expected after changes are implemented. However, re-executing all test cases for every modification is often i...
Classifying Logical Gates in Quantum Codes via Cohomology Operations and Symmetry
Po-Shen Hsin, Ryohei Kobayashi, Guanyu Zhu·Nov 24, 2024
We systematically construct and classify fault-tolerant logical gates implemented by constant-depth circuits for quantum codes using cohomology operations and symmetry. These logical gates are obtained from unitary operators given by symmetry-protect...
An unconditional distribution learning advantage with shallow quantum circuits
N. Pirnay, S. Jerbi, Jean-Pierre Seifert +1 more·Nov 23, 2024
One of the core challenges of research in quantum computing is concerned with the question whether quantum advantages can be found for near-term quantum circuits that have implications for practical applications. Motivated by this mindset, in this wo...