Papers
Live trends in quantum computing research, updated daily from arXiv.
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Practical Quantum Advantage on Partially Fault-Tolerant Quantum Computer
Riki Toshio, Yutaro Akahoshi, J. Fujisaki +3 more·Aug 27, 2024
Achieving quantum speedups in practical tasks remains challenging for current noisy intermediate-scale quantum (NISQ) devices. These devices always encounter significant obstacles such as inevitable physical errors and the limited scalability of curr...
Compilation of Trotter-Based Time Evolution for Partially Fault-Tolerant Quantum Computing Architecture
Yutaro Akahoshi, Riki Toshio, J. Fujisaki +3 more·Aug 27, 2024
Achieving practical quantum speedup with limited resources is a crucial challenge in both academic and industrial communities. To address this, a partially fault-tolerant quantum computing architecture called ``space-time efficient analog rotation qu...
RESCQ: Realtime Scheduling for Continuous Angle Quantum Error Correction Architectures
Sayam Sethi, J. Baker·Aug 27, 2024
In order to realize large scale quantum error correction (QEC), resource states, such as |T〉, must be prepared which is expensive in both space and time. In order to circumvent this problem, alternatives have been proposed, such as the production of ...
Probing the Page transition via approximate quantum error correction
Haocheng Zhong·Aug 27, 2024
In recent years, there is a huge progress in understanding the black hole information problem, and the key is that the black hole entropy of radiation should be calculated by the island formula, which describes the Page curve to ensure the unitarity ...
Automated Synthesis of Quantum Algorithms via Classical Numerical Techniques
Yuxin Huang, Benjamin E. Grossman‐Ponemon, David Hyde·Aug 27, 2024
We apply numerical optimization and linear algebra algorithms for classical computers to the problem of automatically synthesizing algorithms for quantum computers. Using our framework, we apply several common techniques from these classical domains ...
Quantum multi-row iteration algorithm for linear systems with non-square coefficient matrices
Weitao Lin, Guojing Tian, Xiaoming Sun·Aug 27, 2024
In the field of quantum linear system algorithms, quantum computing has realized exponential computational advantages over classical computing. However, the focus has been on square coefficient matrices, with few quantum algorithms addressing non-squ...
Artificially intelligent Maxwell’s demon for optimal control of open quantum systems
P. A. Erdman, Robert Czupryniak, Bibek Bhandari +4 more·Aug 27, 2024
Feedback control of open quantum systems is of fundamental importance for practical applications in various contexts, ranging from quantum computation to quantum error correction and quantum metrology. Its use in the context of thermodynamics further...
Small graph perturbations, QAOA, and the MaxCut problem
Leonardo Lavagna, Simone Piperno, Andrea Ceschini +1 more·Aug 27, 2024
We investigate the Maximum Cut (MaxCut) problem on different graph classes with the quantum approximate optimization algorithm (QAOA) using symmetries. In particular, heuristics on the relationship between graph symmetries and the approximation ratio...
Comprehensive explanation of ZZ coupling in superconducting qubits
Simon Pettersson Fors, Jorge Fern'andez-Pend'as, A. F. Kockum·Aug 27, 2024
A major challenge for scaling up superconducting quantum computers is unwanted couplings between qubits, which lead to always-on ZZ couplings that impact gate fidelities by shifting energy levels conditional on qubit states. To tackle this challenge,...
Toward Mixed Analog-Digital Quantum Signal Processing: Quantum AD/DA Conversion and the Fourier Transform
Yuan Liu, John M. Martyn, Jasmine Sinanan-Singh +3 more·Aug 27, 2024
Signal processing stands as a pillar of classical computation and modern information technology, applicable to both analog and digital signals. Recently, advancements in quantum information science have suggested that quantum signal processing (QSP) ...
Continuous Optimization for Decoding Errors
Shashank Srivastava·Aug 26, 2024
Error-correcting codes are one of the most fundamental objects in pseudorandomness, with applications in communication, complexity theory, and beyond. Codes are useful because of their ability to support decoding, which is the task of recovering a co...
Theoretical framework for quantum associative memories
Adrià Labay-Mora, Eliana Fiorelli, R. Zambrini +1 more·Aug 26, 2024
Associative memory (AM) refers to the ability to relate a memory with an input and targets the restoration of corrupted patterns. It has been intensively studied in classical physical systems, as in neural networks where an attractor dynamics settles...
An encoding of argumentation problems using quadratic unconstrained binary optimization
Marco Baioletti, Francesco Santini·Aug 26, 2024
In this paper, we develop a way to encode several NP-Complete problems in Abstract Argumentation to Quadratic Unconstrained Binary Optimization (QUBO) problems. In this form, a solution for a QUBO problem involves minimizing a quadratic function over...
Towards Equivalence Checking of Classical Circuits Using Quantum Computing
Nils Quetschlich, Tobias Forster, Adrian Osterwind +2 more·Aug 26, 2024
Quantum computers and quantum algorithms have made great strides in the last few years and promise improvements over classical computing for specific tasks. Although the current hardware is not yet ready to make real impacts at the time of writing, t...
Non-iterative disentangled unitary coupled-cluster based on lie-algebraic structure
Mohammad Haidar, Olivier Adjoua, Siwar Badreddine +2 more·Aug 26, 2024
Due to their non-iterative nature, fixed unitary coupled cluster (UCC) ansätze are attractive for performing quantum chemistry variational quantum eigensolver (VQE) computations as they avoid pre-circuit measurements on a quantum computer. However, a...
Measuring Chern–Simons level k by braiding SU(2)k\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$SU(2)_k$$\end{documen
A. Belov, A. Morozov·Aug 26, 2024
Chern–Simons theory in application to the quantum computing is actively developing at the present. However, most discussed are the questions of using materials with known parameters and building corresponding quantum gates and algorithms. In this pap...
Recipe for local simulation of strongly correlated fermionic matter on quantum computers: The two-dimensional Fermi-Hubbard model
Arash Jafarizadeh, F. Pollmann, A. Gammon-Smith·Aug 26, 2024
The simulation of quantum many-body systems, relevant for quantum chemistry and condensed matter physics, is one of the most promising applications of near-term quantum computers before fault-tolerance. However, since the vast majority of quantum com...
Using a high-fidelity numerical model to infer the shape of a few-hole Ge quantum dot
Mitchell Brickson, N. Jacobson, Andrew J. Miller +9 more·Aug 26, 2024
The magnetic properties of hole quantum dots in Ge are sensitive to their shape due to the interplay between strong spin-orbit coupling and confinement. We show that the split-off band, surrounding SiGe layers, and hole-hole interactions have a stron...
Bosonic quantum error correction with neutral atoms in optical dipole traps
Leon H. Bohnmann, David F. Locher, Johannes Zeiher +1 more·Aug 26, 2024
Bosonic quantum error correction codes encode logical qubits in the Hilbert space of one or multiple harmonic oscillators. A prominent class of bosonic codes is that of Gottesman-Kitaev-Preskill (GKP) codes of which implementations have been demonstr...
Circumventing traps in analog quantum machine learning algorithms through co-design
Rodrigo Araiza Bravo, Jorge Garcia Ponce, Hong-Ye Hu +1 more·Aug 26, 2024
Quantum machine learning algorithms promise to deliver near-term, applicable quantum computation on noisy, intermediate-scale systems. While most of these algorithms leverage quantum circuits for generic applications, a recent set of proposals, calle...