相关实验视频
Updated: Jun 19, 2026

14:58
Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
Published on: June 3, 2015
流:单个库珀对电路免费进行抵消
Vladimir E Manucharyan1, Jens Koch, Leonid I Glazman
1Departments of Physics and Applied Physics, Yale University, New Haven, CT 06520, USA.
概括
研究人员开发了一种对偏移电荷不敏感的新型超导人工原子,克服了量子电路的一个主要局限性. 这一突破使强大的量子信息处理和计量应用成为可能.
科学领域:
- 量子物理学的量子物理学
- 固态系统是固态系统.
- 计量学 计量学 计量学
背景情况:
- 使用道结的单个库珀对量子电路对量子信息和计量学具有前景.
- 抵消电荷,固态系统中的随机微观电荷,严重限制了这些电路的性能.
- 由于这些固有的电荷,现有的超导电路易受性能降低的影响.
研究的目的:
- 为了设计一种超导人造原子,对抵消电荷有免疫力.
- 为了保持单一Cooper-pair效应所必需的不和的能量水平结构.
- 为了实现可靠的量子信息处理和计量应用.
主要方法:
- 关闭一个小道连接点,用约瑟夫森运动感应力对一系列大容量道连接点的数组.
- 确保所有超导岛屿通过至少一个大型连接点连接在一起.
- 设计一个电路架构,以减轻流浪电荷的影响.
主要成果:
- 实现了一种新的超导人造原子.
- 人工原子对抵消电荷完全没有敏感性.
- 能量水平保留了单个库珀对效应的特征性无调结构.
结论:
- 开发的超导人造原子克服了量子电路中偏移电荷的限制.
- 这一创新为更稳定,更可靠的量子信息处理和计量学铺平了道路.
- 该设备为推进固态量子计算提供了一个有前途的平台.
相关概念视频
Equivalent Capacitance
Multiple capacitors can be connected in a circuit in series or parallel configuration. When the capacitor combination is connected to a battery, the potential drop across each capacitor and the magnitude of charge stored in the individual capacitor depends on the type of the connection. The capacitor combination is replaced by a single equivalent capacitor that stores the same amount of charge as the combination for a given potential difference.
The following strategies are adopted to calculate...
The following strategies are adopted to calculate...
Equivalent Capacitance
From the study of resistive circuits, it is understood that employing a series-parallel combination serves as an effective strategy for simplifying circuits. Capacitors can be arranged within a circuit in one of two ways: a series configuration or a parallel configuration. The way these capacitors are connected to a battery will influence both the potential drop across each individual capacitor and the size of the charge that each capacitor can store. This is determined by the specific type of...
Electric Field of Two Equal and Opposite Charges
Atoms generally contain the same number of positively and negatively charged particles, protons, and electrons. Hence, they are electrically neutral. However, the centers of the positive and negative charges do not always coincide. In such a scenario, the electric field of an atom may not be zero.
A separation of the positive and negative charges can lead to a weak, remnant effect of the positive and negative charges. The expectation is that the more the distance between the positive and...
A separation of the positive and negative charges can lead to a weak, remnant effect of the positive and negative charges. The expectation is that the more the distance between the positive and...
MOS Capacitor
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
Junction Potentials in Galvanic Cells
The Nernst equation, derived under the assumption of thermodynamic equilibrium, calculates the electromotive force (emf) as the sum of potential differences at phase boundaries in a reversible cell without a liquid junction. However, in irreversible cells such as the Daniell cell, an additional potential difference named the liquid-junction potential (EJ) arises across the interface of two electrolyte solutions due to different ion diffusion rates. This EJ represents the potential difference...
Biasing of FET
Biasing a Junction Field Effect Transistor (JFET) is crucial for setting operational parameters and ensuring efficient functioning in electronic circuits. JFETs are characterized by using a single carrier type in N-channel or P-channel configurations, where the channel is surrounded by PN junctions. These junctions are central to the device's ability to control current flow.
In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the gate...
In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the gate...

