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相关概念视频

Superconductor01:24

Superconductor

2.0K
A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...
2.0K
Types Of Superconductors01:28

Types Of Superconductors

1.8K
A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
1.8K
Ampere-Maxwell's Law: Problem-Solving01:17

Ampere-Maxwell's Law: Problem-Solving

1.3K
A parallel-plate capacitor with capacitance C, whose plates have area A and separation distance d, is connected to a resistor R and a battery of voltage V. The current starts to flow at t = 0. What is the displacement current between the capacitor plates at time t? From the properties of the capacitor, what is the corresponding real current?
To solve the problem, we can use the equations from the analysis of an RC circuit and Maxwell's version of Ampère's law.
For the first part of the...
1.3K
Adiabatic Processes for an Ideal Gas01:18

Adiabatic Processes for an Ideal Gas

4.3K
When an ideal gas is compressed adiabatically, that is, without adding heat, work is done on it, and its temperature increases. In an adiabatic expansion, the gas does work, and its temperature drops. Adiabatic compressions actually occur in the cylinders of a car, where the compressions of the gas-air mixture take place so quickly that there is no time for the mixture to exchange heat with its environment. Nevertheless, because work is done on the mixture during the compression, its...
4.3K
The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

61.3K
Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
61.3K
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

1.7K
In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
1.7K

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Updated: Mar 19, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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用超导电路进行数字化电量子计算

R Barends1, A Shabani2, L Lamata3

  • 1Google Inc., Santa Barbara, California 93117, USA.

Nature
|June 10, 2016
PubMed
概括
此摘要是机器生成的。

研究人员在超导系统上开发了数字化电量子计算. 这种混合方法结合了亚亚和数字量子计算的优势来解决复杂的物理和化学问题.

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科学领域:

  • 量子计算
  • 固态物理
  • 计算化学

背景情况:

  • 量子计算提供了一般的解决方案, 但面临着诸如噪声和连接等硬件限制.
  • 数字量子计算提供灵活性和错误纠正,但使用特定问题的算法.

研究的目的:

  • 结合阿迪亚巴特和数字量子计算的优势.
  • 实现一种叫做数字化量子计算的混合方法.
  • 在超导系统上展示它的功能.

主要方法:

  • 在超导平台上实现数字化量子计算.
  • 使用了多达9个量子位和1000个量子逻辑门.
  • 在数字化进化过程中进行断层探测并分析错误缩放.

主要成果:

  • 通过数字方法成功模拟了阿迪亚巴特算法.
  • 解决了一个维的伊辛问题和复杂相互作用的哈密尔顿式.
  • 在固态系统中展示了数字化量子计算的可行性.

结论:

  • 数字化形量子计算弥合了一般适用性和硬件限制之间的差距.
  • 这种方法可以合成长距离的相关性,并解决复杂的计算问题.
  • 整合与容错承诺一个可扩展的,通用量子算法.