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200 篇论文

We reduce measurement errors in a quantum computer using machine learning techniques. We exploit a simple yet versatile neural network to classify multi-qubit quantum states, which is trained using experimental data. This flexible approach…

Building a fault-tolerant quantum computer will require vast numbers of physical qubits. For qubit technologies based on solid state electronic devices, integrating millions of qubits in a single processor will require device fabrication to…

Perfect state transfer (PST) through a spin chain can be theoretically obtained via predesigned PST couplings. However, the corresponding experiment on IBM quantum computers demonstrates low transmission success probability (SP) due to…

量子物理 · 物理学 2025-08-27 Zong-Yuan Ge , Lian-Ao Wu , Zhao-Ming Wang

Establishing low-error and fast detection methods for qubit readout is crucial for efficient quantum error correction. Here, we test neural networks to classify a collection of single-shot spin detection events, which are the readout signal…

The estimation of multi-qubit observables is a key task in quantum information science. The standard approach is to decompose a multi-qubit observable into a weighted sum of Pauli strings. The observable can then be estimated from…

量子物理 · 物理学 2023-09-01 L. A. Markovich , J. Borregaard

Quantum sensors may provide extremely high sensitivity and precision to extract key information in a quantum or classical physical system. A fundamental question is whether a quantum sensor is capable of uniquely inferring unknown…

量子物理 · 物理学 2022-01-19 Qi Yu , Yuanlong Wang , Daoyi Dong , Ian R. Petersen

Pulsed readout of Direct Current (DC) SUperconducting Quantum Interference Device (SQUID) is crucial for experiments which need to be performed at millikelvin temperatures, such as the readout of superconducting and electron spin based…

量子物理 · 物理学 2022-04-20 Josiah Cochran , C. S. Guzman , Eric Stiers , Irinel Chiorescu

Spanning over two decades, the study of qubits in semiconductors for quantum computing has yielded significant breakthroughs. However, the development of large-scale semiconductor quantum circuits is still limited by challenges in…

Measurement for qubits plays a key role in quantum computation. Current methods for classifying states of single qubit in a superconducting multi-qubit system produce fidelities lower than expected due to the existence of crosstalk,…

量子物理 · 物理学 2021-09-08 Zi-Feng Chen , Qi Zhou , Peng Duan , Wei-Cheng Kong , Hai-Feng Zhang , Guo-Ping Guo

In collider physics experiments, particle identification (PID), i. e. the identification of the charged particle species in the detector is usually one of the most crucial tools in data analysis. In the past decade, machine learning…

高能物理 - 实验 · 物理学 2024-08-27 Zhipeng Yao , Xingtao Huang , Teng Li , Weidong Li , Tao Lin , Jiaheng Zou

Stabilizer operations are at the heart of quantum error correction and are typically implemented in software-controlled entangling gates and measurements of groups of qubits. Alternatively, qubits can be designed so that the Hamiltonian…

量子物理 · 物理学 2023-10-19 K. Dodge , Y. Liu , A. R. Klots , B. Cole , A. Shearrow , M. Senatore , S. Zhu , L. B. Ioffe , R. McDermott , B. L. T. Plourde

Pauli exclusion principle can lead to a supression of transport through double quantum dots, even if both quantum dots are connected by a resonant driving ac field. In this work, we study how this effect, known as spin blockade, can be…

介观与纳米尺度物理 · 物理学 2015-06-25 R. Sánchez , G. Platero , R. Aguado , E. Cota

There is growing interest in bismuth-doped silicon (Si:Bi) as an alternative to the well-studied proposals for silicon based quantum information processing (QIP) using phosphorus-doped silicon (Si:P). We focus here on the implications of…

量子物理 · 物理学 2012-07-05 M. H. Mohammady , G. W. Morley , A. Nazir , T. S. Monteiro

Deep learning has emerged as an effective solution for addressing the challenges of short-term voltage stability assessment (STVSA) in power systems. However, existing deep learning-based STVSA approaches face limitations in adapting to…

机器学习 · 计算机科学 2023-09-21 Yang Li , Shitu Zhang , Yuanzheng Li , Jiting Cao , Shuyue Jia

The nature of the atomic defects on the hydrogen passivated Si (100) surface is analyzed using deep learning and scanning tunneling microscopy (STM). A robust deep learning framework capable of identifying atomic species, defects, in the…

材料科学 · 物理学 2020-02-19 Maxim Ziatdinov , Udi Fuchs , James H. G. Owen , John N. Randall , Sergei V. Kalinin

We interpret a recent pioneering experiment [Zgirski M. et al., Phys. Rev. Lett., 106 (2011) 257003] on quasiparticle manipulation in a superconducting break junction in terms of spin blockade drawing analogy with spin qubits. We propose a…

介观与纳米尺度物理 · 物理学 2012-12-14 Ciprian Padurariu , Yuli V. Nazarov

A new type of blockade effect - spin-orbit blockade (SOB) - is found in the conduction of a quantum dot (QD) made of a material with spin-orbit interaction. The blockade arises from spin-filtering effect in a quantum point contact (QPC),…

介观与纳米尺度物理 · 物理学 2012-04-25 Sunwoo Kim , Yoshiaki Hashimoto , Yasuhiro Iye , Shingo Katsumoto

Transient stability assessment is an integral part of dynamic security assessment of power systems. Traditional methods of transient stability assessment, such as time domain simulation approach and direct methods, are appropriate for…

系统与控制 · 电气工程与系统科学 2021-11-23 Umair Shahzad

We investigate quantum dots in semiconductor PbTe nanowire devices. Due to the accessibility of ambipolar transport in PbTe, quantum dots can be occupied both with electrons and holes. Owing to a very large dielectric constant in PbTe of…

介观与纳米尺度物理 · 物理学 2022-10-12 M. Gomanko , E. J. de Jong , Y. Jiang , S. G. Schellingerhout , E. P. A. M. Bakkers , S. M. Frolov

This paper introduces SmartBSP, an advanced self-supervised learning framework for real-time path planning and obstacle avoidance in autonomous robotics navigating through complex environments. The proposed system integrates Proximal Policy…

机器人学 · 计算机科学 2025-09-03 Shahab Shokouhi , Oguzhan Oruc , May-Win Thein