Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Integrated high-performance error correction for continuous-variable quantum key distribution
Chuang Zhou, Yang Li, Li Ma +12 more·Jul 23, 2024
An integrated error-correction scheme with high throughput, low frame errors rate (FER) and high reconciliation efficiency under low signal to noise ratio (SNR) is one of the major bottlenecks to realize high-performance and low-cost continuous varia...
Quantum Computing for Phonon Scattering Effects on Thermal Conductivity
Xiangjun Tan·Jul 22, 2024
Recent investigations have demonstrated that multi-phonon scattering processes substantially influence the thermal conductivity of materials, posing significant computational challenges for classical simulations as the complexity of phonon modes esca...
Breadth-first graph traversal union-find decoder
M. C. Lobl, Susan X. Chen, Stefano Paesani +1 more·Jul 22, 2024
Fast decoding algorithms are decisive for real-time quantum error correction and for analyzing properties of error correction codes. Here, we develop variants of the union-find decoder that simplify its implementation and provide potential decoding s...
Sparks of Quantum Advantage and Rapid Retraining in Machine Learning
William Troy·Jul 22, 2024
The advent of quantum computing holds the potential to revolutionize various fields by solving complex problems more efficiently than classical computers. Despite this promise, practical quantum advantage is hindered by current hardware limitations, ...
Spin Qubits with Scalable milli-kelvin CMOS Control
Samuel K. Bartee, W. Gilbert, Kun Zuo +14 more·Jul 21, 2024
A key virtue of spin qubits is their sub-micron footprint, enabling a single silicon chip to host the millions of qubits required to execute useful quantum algorithms with error correction. With each physical qubit needing multiple control lines howe...
An Efficient Quantum Euclidean Similarity Algorithm for Worldwide Localization
A. Shokry, Moustafa Youssef·Jul 19, 2024
Fingerprinting techniques are widely used for localization because of their accuracy, especially in the presence of wireless channel noise. However, the fingerprinting techniques require significant storage and running time, which is a concern when i...
VeriQR: A Robustness Verification Tool for quantum Machine Learning Models
Yanling Lin, J. Guan, Wang Fang +2 more·Jul 18, 2024
Adversarial noise attacks present a significant threat to quantum machine learning (QML) models, similar to their classical counterparts. This is especially true in the current Noisy Intermediate-Scale Quantum era, where noise is unavoidable. Therefo...
SHARC-VQE: Simplified Hamiltonian approach with refinement and correction enabled variational quantum eigensolver for molecular simulation.
Harshdeep Singh, Sonjoy Majumder, Sabyashachi Mishra·Jul 17, 2024
Quantum computing is finding increasingly more applications in quantum chemistry, particularly to simulate electronic structure and molecular properties of simple systems. The transformation of a molecular Hamiltonian from the fermionic space to the ...
CUAOA: A Novel CUDA-Accelerated Simulation Framework for the QAOA
Jonas Stein, Jonas Blenninger, David Bucher +4 more·Jul 17, 2024
The Quantum Approximate Optimization Algorithm (QAOA) is a prominent quantum algorithm designed to find approximate solutions to combinatorial optimization problems, which are challenging for classical computers. In the current era, where quantum har...
Microscopic parametrizations for gate set tomography under coloured noise
P. Vinas, A. Bermudez·Jul 16, 2024
Gate set tomography (GST) allows for a self-consistent characterization of noisy quantum information processors (QIPs). The standard approach treats QIPs as black boxes only constrained by the laws of physics, attaining full generality at a considera...
Far from Perfect: Quantum Error Correction with (Hyperinvariant) Evenbly Codes
M. Steinberg, Junyu Fan, Robert J. Harris +3 more·Jul 16, 2024
We introduce a new class of qubit codes that we call Evenbly codes, building on a previous proposal of hyperinvariant tensor networks. Its tensor network description consists of local, non-perfect tensors describing CSS codes interspersed with Hadama...
Pseudorandom density matrices
Nikhil Bansal, Wai-Keong Mok, Kishor Bharti +2 more·Jul 16, 2024
Pseudorandom states (PRSs) are state ensembles that cannot be efficiently distinguished from Haar-random states. However, the definition of PRSs has been limited to pure states and lacks robustness against noise. In this work, we introduce pseudorand...
Quantum control of an oscillator with a Kerr-cat qubit
Andy Z Ding, Benjamin L. Brock, A. Eickbusch +10 more·Jul 15, 2024
Bosonic codes offer a hardware-efficient strategy for quantum error correction by redundantly encoding quantum information in the large Hilbert space of a harmonic oscillator. However, experimental realizations of these codes are often limited by anc...
OnionVQE optimization strategy for ground state preparation on NISQ devices
Katerina Gratsea, Johannes Selisko, Maximilian Amsler +3 more·Jul 15, 2024
The variational quantum eigensolver (VQE) is one of the most promising and widely used algorithms for exploiting the capabilities of current Noisy Intermediate-Scale Quantum (NISQ) devices. However, VQE algorithms suffer from a plethora of issues, su...
Quantum data centres: a simulation-based comparative noise analysis
K. Campbell, M. Razavi, Ahmed Lawey·Jul 15, 2024
Quantum data centres (QDCs) could overcome the scalability challenges of modern quantum computers. Single-processor monolithic quantum computers are affected by increased cross talk and difficulty of implementing gates when the number of qubits is in...
Benchmarking Quantum Gates and Circuits
Vinay Tripathi, Daria Kowsari, Kumar Saurav +3 more·Jul 13, 2024
Accurate noise characterization in quantum gates and circuits is vital for the development of reliable quantum simulations for chemically relevant systems and fault-tolerant quantum computing. This paper reviews a variety of key benchmarking techniqu...
Practicality of a quantum adiabatic algorithm for chemistry applications
Etienne Granet, K. Ghanem, Henrik Dreyer·Jul 13, 2024
Despite its simplicity and strong theoretical guarantees, adiabatic state preparation has received considerably less interest than variational approaches for the preparation of low-energy electronic structure states. Two major reasons for this are th...
Finding quantum codes via Riemannian optimization
Miguel Casanova, Kentaro Ohki, Francesco Ticozzi·Jul 11, 2024
We propose a novel optimization scheme designed to find optimally correctable subspace codes for a known quantum noise channel. To each candidate subspace code we first associate a universal recovery map, as if the code was perfectly correctable, and...
XYZ Ruby Code: Making a Case for a Three-Colored Graphical Calculus for Quantum Error Correction in Spacetime
J. M. D. L. Fuente, Josias Old, Alex Townsend-Teague +3 more·Jul 11, 2024
Analyzing and developing new quantum error-correcting (QEC) schemes is one of the most prominent tasks in quantum computing research. In such efforts, introducing time dynamics explicitly in both analysis and design of error-correcting protocols cons...
Scalable, high-fidelity all-electronic control of trapped-ion qubits
C. Loschnauer, J. M. Toba, A. C. Hughes +10 more·Jul 10, 2024
The central challenge of quantum computing is implementing high-fidelity quantum gates at scale. However, many existing approaches to qubit control suffer from a scale-performance trade-off, impeding progress towards the creation of useful devices. H...