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相关概念视频

Reaction Quotient02:35

Reaction Quotient

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The status of a reversible reaction is conveniently assessed by evaluating its reaction quotient (Q). For a reversible reaction described by m A + n B ⇌ x C + y D, the reaction quotient is derived directly from the stoichiometry of the balanced equation as
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The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

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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.
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The Pauli Exclusion Principle03:06

The Pauli Exclusion Principle

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The arrangement of electrons in the orbitals of an atom is called its electron configuration. We describe an electron configuration with a symbol that contains three pieces of information:
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Free Energy Changes for Nonstandard States03:25

Free Energy Changes for Nonstandard States

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The free energy change for a process taking place with reactants and products present under nonstandard conditions (pressures other than 1 bar; concentrations other than 1 M) is related to the standard free energy change according to this equation:
 
where R is the gas constant (8.314 J/K·mol), T is the absolute temperature in kelvin, and Q is the reaction quotient. This equation may be used to predict the spontaneity of a process under any given set of conditions.
Reaction Quotient...
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Introduction to Chemical Reactions01:23

Introduction to Chemical Reactions

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All chemical reactions begin with a reactant, the general term for one or more substances entering the reaction. Sodium and chloride ions, for example, are the reactants in the production of table salt. One or more substances produced by a chemical reaction are called the product. Chemical reactions follow the law of conservation of mass, which means that matter cannot be created nor destroyed in a chemical reaction. The components of the reactants—the number of atoms and the...
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The de Broglie Wavelength02:32

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In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
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Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
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量子计算机上的化学反应模拟器通过第一个量子化 (II) - 基本处理:实施

Hideo Takahashi1, Tatsuya Tomaru2, Toshiyuki Hirano3

  • 1Department of Mechanical Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

Journal of chemical theory and computation
|October 25, 2024
PubMed
概括

研究人员开发了crsQ,这是一种用于化学模拟的量子电路发生器. 该工具使化学反应的量子计算成为可能,为量子化学模拟提供了一种新的方法.

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科学领域:

  • 量子计算是一种量子计算.
  • 计算化学的计算化学
  • 量子模拟的量子模拟

背景情况:

  • 量子计算为复杂的化学模拟提供了潜力.
  • 现有的量子电路实现用于化学模拟是有限的.
  • 基于网格的第一个量子化方法显示出化学模拟的前景.

研究的目的:

  • 为了介绍crsQ,一种用于化学反应模拟的新型量子电路发生器.
  • 为了实现量子电路上的波函数的反对称和时间演变.
  • 使用算术门实现哈密尔顿式的潜在能量项.

主要方法:

  • 开发了crsQ,一个量子电路发生器.
  • 实现了反对称化和木-托特尔分解,用于时间演变.
  • 使用了算术门 (加数,乘数等). 对于哈密尔顿的潜在能量的术语.
  • 为大规模电路设计临时量子比特分配和抽象语法树框架.

主要成果:

  • crsQ为化学模拟器生成量子电路.
  • 量子比特的数量是O ((η log η),其中η是电子的数量.
  • 所有电路组件都通过单元测试进行了验证.
  • 开发了新的框架,以促进大规模的量子电路生成.

结论:

  • crsQ提供了一个基于网格的第一个量子化化学模拟器的已发布实现.
  • 开发的框架有助于创建复杂的大规模量子电路.
  • 这项工作推进了量子计算在化学模拟中的应用.