相关实验视频
Updated: May 21, 2025

07:46
Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
8.5K
在热力学极限中抑制非扰动性测量器误差,使用局部伪发电机.
Maarten Van Damme1, Julius Mildenberger2, Fabian Grusdt3,4
1Department of Physics and Astronomy, University of Ghent, Krijgslaan 281, 9000 Gent, Belgium.
概括
使用局部伪生成器的新尺寸保护方案有效地保护了格子尺寸理论的量子模拟,防止非扰动性错误. 这种方法在模拟量子模拟器和有限量子计算机中证明了稳定性,确保了测量器不变性.
科学领域:
- 量子信息科学 量子信息科学
- 凝聚物质物理学 凝聚物质物理学
- 高能物理 高能物理
背景情况:
- 晶格尺理论的量子模拟需要强大的尺寸对称性保护.
- 最近提出的一项方案是使用本地伪发电机进行测距保护.
- 之前的研究证实了它在有限模拟量子模拟器中对扰乱误差的有效性.
研究的目的:
- 调查局部伪生成器方案对模拟量子模拟器中非扰动性错误的有效性.
- 评估该方案在热力学极限和量子计算机上的离散时间演变中的性能.
主要方法:
- 统一矩阵产品状态 (MPS) 计算被用来研究模拟量子模拟器中的非扰动性错误.
- 量子电路模型计算被用来分析量子计算机上的测量器违规情况,使用Trotterized时间分离.
主要成果:
- 局部伪生成器方案成功地保护了格子尺度理论免受非扰动性错误,直到热力学极限中的所有可访问的进化时间.
- 在调整的尺度理论中观察到一种新兴的尺度对称性,它超越了分析预测.
- 在有限量子计算机上有效地抑制了标尺违规,证明了该方案对Trotterized系统的适用性.
结论:
- 局部伪生成器方案是强大的和可行的工具,用于强制执行量子模拟中的测量器不变性.
- 这些发现支持该方案在现代量子模拟器和杂的中等尺度量子设备中的实际应用.
相关概念视频
Thermodynamic Potentials
749
Thermodynamic potentials are state functions that are extremely useful in analyzing a thermodynamic system. They have dimensions of energy. The four important thermodynamic potentials are internal energy, enthalpy, Helmholtz free energy, and Gibbs free energy. These thermodynamic potentials can be expressed using two of the following variables: pressure, volume, temperature, and entropy. These two variables are expressed as the rate of change of the thermodynamic potential with respect to other...
749
Zeroth Law of Thermodynamics
4.6K
Experimentally, if object A is in equilibrium with object B, and object B is in equilibrium with object C, then object A is in equilibrium with object C. That statement of transitivity is called the "zeroth law of thermodynamics." For example, a cold metal block and a hot metal block are both placed on a metal plate at room temperature. Eventually, the cold block and the plate will be in thermal equilibrium. In addition, the hot block and the plate will be in thermal equilibrium.
4.6K
Statements of the Second Law of Thermodynamics
2.6K
The second law of thermodynamics can be stated in several different ways, and all of them can be shown to imply the others. The Clausius’ statement of the second law of thermodynamics is based on the irreversibility of spontaneous heat flow. It states that heat will not flow from the colder body to the hotter body unless some other process is involved. Additionally, as per the Kelvin’s statement, it is impossible to convert the heat from a single source into work without any other...
2.6K
Thermodynamic Systems
4.9K
A thermodynamic system is a set of objects whose thermodynamic properties are of interest. The system is considered to be embedded in its surroundings or the environment. The system and its environment can exchange heat and do work on each other through a boundary that separates them. However, the immediate surroundings of the system interact with it directly and therefore have a much stronger influence on its behavior and properties.
Consider an example of tea boiling in a kettle. The...
Consider an example of tea boiling in a kettle. The...
4.9K
Free Energy Changes for Nonstandard States
10.8K
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...
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...
10.8K
Second Law of Thermodynamics
56.6K
The Second Law of Thermodynamics states that entropy, or the amount of disorder in a system, increases each time energy is transferred or transformed. Each energy transfer results in a certain amount of energy that is lost—usually in the form of heat—that increases the disorder of the surroundings. This can also be demonstrated in a classic food web. Herbivores harvest chemical energy from plants and release heat and carbon dioxide into the environment. Carnivores harvest the...
56.6K

