Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Enhanced Fault-tolerance in Photonic Quantum Computing: Comparing the Honeycomb Floquet Code and the Surface Code in Tailored Architecture
Théo Dessertaine, Boris Bourdoncle, Aurélie Denys +5 more·Oct 9, 2024
Fault-tolerant quantum computing is crucial for realizing large-scale quantum computation, and the interplay between hardware architecture and quantum error-correcting codes is a key consideration. We present a comparative study of two quantum error-...
Variational approach to photonic quantum circuits via the parameter shift rule
Francesco Hoch, G. Rodari, Taira Giordani +9 more·Oct 9, 2024
In the era of noisy intermediate-scale quantum computers, variational quantum algorithms are promising approaches for solving optimization tasks by training parameterized quantum circuits with the aid of classical routines informed by quantum measure...
A practical applicable quantum–classical hybrid ant colony algorithm for the NISQ era
Qian Qiu, Liang Zhang, Mohan Wu +4 more·Oct 8, 2024
Quantum ant colony optimization (QACO) has drew much attention since it combines the advantages of quantum computing and ant colony optimization (ACO) algorithm overcoming some limitations of the traditional ACO algorithm. However, due to the hardwar...
Error mitigation and circuit division for early fault-tolerant quantum phase estimation
Alicja Dutkiewicz, S. Polla, Maximilian Scheurer +3 more·Oct 7, 2024
As fully fault-tolerant quantum computers capable of solving useful problems remain a distant goal, we anticipate an era of"early fault tolerance"where limited error correction is available. We propose a framework for designing early fault-tolerant a...
Limited Parallelization in Gate Operations Leads to Higher Space Overhead and Lower Noise Threshold
Sai Sanjay Narayanan, Smita Bagewadi, Avhishek Chatterjee·Oct 5, 2024
In a modern error corrected quantum memory or circuit, parallelization of gate operations is severely restricted due to issues like cross-talk. Hence, there are enough idle qubits not undergoing gate operations either during the computation phase or ...
Quantum Monte Carlo Integration for Simulation-Based Optimisation
Jingjing Cui, Philippe J.S. de Brouwer, Steven Herbert +7 more·Oct 4, 2024
We investigate the feasibility of integrating quantum algorithms as subroutines of simulation-based optimisation problems with relevance to and potential applications in mathematical finance. To this end, we conduct a thorough analysis of all systema...
Efficient self-consistent learning of gate set Pauli noise
Senrui Chen, Zhihan Zhang, Liang Jiang +1 more·Oct 4, 2024
Understanding quantum noise is an essential step towards building practical quantum information processing systems. Pauli noise is a useful model that has been widely applied in quantum benchmarking, error mitigation, and error correction. Despite in...
Variational Graphical Quantum Error Correction Codes
Yuguo Shao, Yong-chang Li, Fuchuan Wei +5 more·Oct 3, 2024
Quantum error correction is essential for achieving fault-tolerant quantum computation. However, most typical quantum error-correcting codes are designed for generic noise models, which may fail to accurately capture the intricate noise characteristi...
Photonic parameter-shift rule: Enabling gradient computation for photonic quantum computers
A. Pappalardo, P. Emeriau, Giovanni de Felice +5 more·Oct 3, 2024
We present a method for gradient computation in quantum algorithms implemented on linear optical quantum computing platforms. While parameter-shift rules have become a staple in qubit gate-based quantum computing for calculating gradients, their dire...
Competing automorphisms and disordered Floquet codes
Cory T. Aitchison, Benjamin B'eri·Oct 3, 2024
Topological order is a promising basis for quantum error correction, a key milestone towards large-scale quantum computing. Floquet codes provide a dynamical scheme for this while also exhibiting Floquet-enriched topological order where anyons period...
Simple Construction of Qudit Floquet Codes on a Family of Lattices
Andrew Tanggara, Mile Gu, Kishor Bharti·Oct 2, 2024
Dynamical quantum error-correcting codes (QECC) offer wider possibilities in how one can protect logical quantum information from noise and perform fault-tolerant quantum computation compared to static QECCs. A family of dynamical QECCs called the ``...
MaxSAT decoders for arbitrary CSS codes
Mohammadreza Noormandipour, Tobias Haug·Oct 2, 2024
Quantum error correction (QEC) is essential for operating quantum computers in the presence of noise. Here, we accurately decode arbitrary Calderbank-Shor-Steane (CSS) codes via the maximum satisfiability (MaxSAT) problem. We show how to map quantum ...
QKD as a Quantum Machine Learning task
T. Decker, M. Gallezot, S. Kerstan +3 more·Oct 2, 2024
We propose considering Quantum Key Distribution (QKD) protocols as a use case for Quantum Machine Learning (QML) algorithms. We define and investigate the QML task of optimizing eavesdropping attacks on the quantum circuit implementation of the BB84 ...
Beating the Optimal Verification of Entangled States via Collective Strategies
Ye-Chao Liu, Jiangwei Shang·Oct 1, 2024
In the realm of quantum information processing, the efficient characterization of entangled states poses an overwhelming challenge, rendering the traditional methods including quantum tomography unfeasible and impractical. To tackle this problem, we ...
Noise Transfer Approach to GKP Quantum Circuits
T. C. Ralph, M. Winnel, S. Swain +1 more·Oct 1, 2024
The choice between the Schrödinger and Heisenberg pictures can significantly impact the computational resources needed to solve a problem, even though they are equivalent formulations of quantum mechanics. Here, we present a method for analysing Boso...
The quantum trajectory sensing problem and its solution
Zachary E. Chin, Isaac L. Chuang·Oct 1, 2024
The quantum trajectory sensing problem seeks quantum sensor states which enable the trajectories of incident particles to be distinguished using a single measurement. For an $n$-qubit sensor state to unambiguously discriminate a set of trajectories w...
Smallest quantum codes for amplitude damping noise
Sourav Dutta, Aditya Jain, Prabha Mandayam·Sep 30, 2024
We describe the smallest quantum error correcting (QEC) code to correct for amplitude-damping (AD) noise, namely, a 3-qubit code that corrects all the single-qubit damping errors. We generalize this construction to a family of codes that correct AD n...
Experimental Online Quantum Dots Charge Autotuning Using Neural Networks
Victor Yon, Bastien Galaup, C. Rohrbacher +11 more·Sep 30, 2024
Spin-based semiconductor qubits hold promise for scalable quantum computing, yet they require reliable autonomous calibration procedures. This study presents an experimental demonstration of online single-dot charge autotuning using a convolutional n...
Fault-Tolerant Belief Propagation for Practical Quantum Memory
Kao-Yueh Kuo, Ching-Yi Lai·Sep 27, 2024
A fault-tolerant approach to reliable quantum memory is essential for scalable quantum computing, as physical qubits are susceptible to noise. Quantum error correction (QEC) must be continuously performed to prolong the memory lifetime. In QEC, error...
Optimal Quantum Purity Amplification
Zhaoyi Li, Honghao Fu, Takuya Isogawa +2 more·Sep 26, 2024
Quantum purity amplification (QPA) provides a novel approach to counteracting the pervasive noise that degrades quantum states. We present the optimal QPA protocol for general quantum systems and global noise, resolving a two-decade open problem. Und...