关于量子处理器上的质子转移动力学的近似量子电路编译
Arseny Kovyrshin1,2, Dilhan Manawadu3, Edoardo Altamura3,4
1Predictive Science, Digital and Automation, Pharmaceutical Sciences, R&D, AstraZeneca Gothenburg, Pepparedsleden 1, Molndal SE-431 83, Sweden. arseny.kovyrshin@astrazeneca.com.
Physical chemistry chemical physics : PCCP
|January 14, 2026
概括
量子计算推进了质子转移研究. 新的方法表明浅层量子电路可以捕获关键质子行为,接近当前量子硬件的可行性.
科学领域:
- 量子化学 是一个量子化学.
- 计算化学计算化学
- 化学物理 化学物理
背景情况:
- 质子转移反应在化学和生物学中至关重要.
- 量子效应 (如道) 显著影响反应速率.
- 经典的计算方法在这些量子效应方面与大型系统作斗争.
研究的目的:
- 扩展和对质子转移反应的量子计算框架进行基准测试.
- 评估计算当前量子设备上的精确能量障碍的可行性.
- 为了研究使用核电子轨道 (NEO) 形式主义对质子的量子力学处理.
主要方法:
- 利用ADAPT-VQE算法与结的自然轨道近似来构建量子电路.
- 采用自适应的近似量子编译来优化电路深度和保真度.
- 用于 ibm_pittsburgh 量子装置的转接电路,并使用现实的噪声模型进行模拟.
主要成果:
- 计算了malonaldehyde的能量障碍和外定位的质子密度.
- 证明精制和压缩电路保留了基本的量子特征.
- 浅电路 (AQC-low) 质量复制了质子定位,接近当前的硬件限制.
- 更深的电路 (AQC-高) 实现了对参考屏障高度 (1.6 mHa误差) 的更高保真度.
结论:
- 量子计算为研究质子转移中的量子效应提供了一个可行的途径.
- 浅量子电路显示出近期硬件可行性的前景.
- 精确的质子量子力学处理是可以实现的,尽管对于精确的速率常数预测仍然存在挑战.
相关概念视频
02:45The Quantum-Mechanical Model of an Atom
56.5K
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.
56.5K
01:27π Electron Effects on Chemical Shift: Overview
1.6K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
1.6K
01:10Interpreting ¹H NMR Signal Splitting: The (n + 1) Rule
2.4K
In the AX proton spin system, proton A can sense the two spin states of a coupled proton X, resulting in a doublet NMR signal with two peaks of equal (1:1) intensity. When proton A is coupled to two equivalent protons (AX2 spin system), the spin states of each X can be aligned with or against the external field, creating three possible scenarios. This results in a 1:2:1 triplet signal, where the central peak corresponds to the chemical shift of A and is twice as large or intense as the...
2.4K
01:13¹H NMR: Complex Splitting
1.8K
A proton M that is coupled to a proton X results in doublet signals for M. However, NMR-active nuclei can be simultaneously coupled to more than one nonequivalent nucleus. When M is coupled to a second proton A, such as in styrene oxide, each peak in the doublet is split into another doublet.
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied...
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied...
1.8K
01:17Coupled Reactions
10.6K
Cellular processes such as building and breaking down complex molecules occur through stepwise chemical reactions. Some of these chemical reactions are spontaneous and release energy, whereas others require energy to proceed. Cells often couple the energy-releasing reaction with the energy-requiring one to carry out important cell functions.
Energy in adenosine triphosphate or ATP molecules is easily accessible to do work. ATP powers the majority of energy-requiring cellular reactions....
Energy in adenosine triphosphate or ATP molecules is easily accessible to do work. ATP powers the majority of energy-requiring cellular reactions....
10.6K
01:58Cooperative Allosteric Transitions
2.6K
2.6K