在固态系统的开放量子动态中观察元稳定性
Jun-Xiang Zhang1,2, Yuan-De Jin3,4, Chu-Dan Qiu3,4
1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, China.
Nature communications
|November 6, 2025
概括
研究人员通过Ramsey干扰度测量实验观察了核旋转中的量子转移稳定性. 这一发现使得高保真度的自旋读数,并揭示了超长的自旋放松时间,推进了开放量子动力学研究.
科学领域:
- 量子物理学 量子物理学 是一种量子物理学.
- 没有平衡 动力学
- 量子信息科学 量子信息科学
背景情况:
- 超稳定性是古典物理学中已知的现象,系统在达到平衡之前存在长期状态.
- 量子转变稳定性在开放量子系统中理论上已经得到预测,但缺乏实验证据.
- 开放的量子系统涉及与环境的相互作用,导致复杂的动态.
研究的目的:
- 在离散时间的开放量子系统中实验观察和证明量子转移稳定性.
- 调查超稳态对于实际量子信息任务的潜力.
- 探索量子力学中超稳定性的潜在机制.
主要方法:
- 在钻石中的单个核旋转上利用了连续的拉姆齐干扰测量 (RIMs) 测量.
- 利用附近空 (NV) 电子中心的自旋进行测量.
- 分析了RIMs诱导的量子通道的光谱结构,以确定转移稳定的区域.
主要成果:
- 在核旋转的离散时间演变中成功观察到量子转稳.
- 确定了对观察到的现象至关重要的测量时间的元稳定区域.
- 由于元稳定极化,实现了核自旋的高保真单次射击读数.
- 观察到超长的核旋转放松时间在室温下超过10秒.
结论:
- 量子转变稳定的实验观测为研究开放量子系统中的非平衡物理开辟了新的途径.
- 超稳定状态可以用于强大的量子信息处理,包括高保真度读取.
- 这些发现突出了固态量子系统在探索基本量子现象和开发量子技术方面的潜力.
更多相关视频
05:39Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
10.2K
11:33All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
10.2K
相关概念视频
01:23Stability of Equilibrium Configuration
771
Understanding the stability of equilibrium configurations is a fundamental part of mechanical engineering. In any system, there are three distinct types of equilibrium: stable, neutral, and unstable.
A stable equilibrium occurs when a system tends to return to its original position when given a small displacement, and the potential energy is at its minimum. An example of a stable equilibrium is when a cantilever beam is fixed at one end and a weight is attached to the other end. If the weight...
A stable equilibrium occurs when a system tends to return to its original position when given a small displacement, and the potential energy is at its minimum. An example of a stable equilibrium is when a cantilever beam is fixed at one end and a weight is attached to the other end. If the weight...
771
01:13Stability of Equilibrium Configuration: Problem Solving
969
The stability of equilibrium configurations is an important concept in physics, engineering, and other related fields. In simple terms, it refers to the tendency of an object or system to return to its equilibrium position after being disturbed. The stability of an equilibrium configuration can be analyzed by considering the potential energy function of the system and examining its behavior near the equilibrium point.
Problem-solving in the context of the stability of equilibrium configuration...
Problem-solving in the context of the stability of equilibrium configuration...
969
01:12Fermi Level Dynamics
630
The vacuum level denotes the energy threshold required for an electron to escape from a material surface. It is usually positioned above the conduction band of a semiconductor and acts as a benchmark for comparing electron energies within various materials.
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
630
02:54Molecular and Ionic Solids
19.8K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
19.8K
02:32The de Broglie Wavelength
32.9K
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...
32.9K
01:04Oscillations about an Equilibrium Position
6.6K
Stability is an important concept in oscillation. If an equilibrium point is stable, a slight disturbance of an object that is initially at the stable equilibrium point will cause the object to oscillate around that point. For an unstable equilibrium point, if the object is disturbed slightly, it will not return to the equilibrium point. There are three conditions for equilibrium points—stable, unstable, and half-stable. A half-stable equilibrium point is also unstable, but is named so...
6.6K