相关实验视频
Updated: Sep 18, 2025

10:00
Gradient Echo Quantum Memory in Warm Atomic Vapor
Published on: November 11, 2013
12.9K
通过希格斯连贯性的干扰发现了一种非常规的量子回声
Chuankun Huang1,2, Martin Mootz1, Liang Luo1
1Ames National Laboratory, US Department of Energy, Ames, IA 50011, USA.
Science advances
|June 25, 2025
概括
研究人员在超导体中检测到希格斯回声,揭示了独特的量子路径和非常规的回声形成. 这一突破澄清了在太赫兹驱动下希格斯模式和准粒子激发之间的相互作用.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 超导电性 超导电性 超导电性
- 量子光学是一种量子光学.
背景情况:
- 检测来自超导希格斯模式的光子回声需要在希格斯和准粒子 (QP) 激发中保持相连贯性.
- 现有的方法在解开复杂的量子路径方面面临挑战.
研究的目的:
- 为了证明超导体中希格斯回声的出现.
- 在太赫兹 (THz) 驱动下研究非传统的回声形成机制.
- 为了区分希格斯模式反应与QP激发,并阐明它们的相互作用.
主要方法:
- 使用希格斯回声谱在超导体上.
- 应用一对THz脉冲来调节超导间隙和印记连贯性.
- 使用先进的时间频率分析.
主要成果:
- 证明了希格斯回声的出现,解开了希格斯模式和QP激发的量子路径.
- 在THz驱动下,由于不均的扩展和动态的"软"QP频段,发现了非传统的回声形成.
- 观察到独特的回声特征:间隙频率的重相峰值,不对称的延迟,以及来自希格斯-QP无调相互作用的负时间信号.
结论:
- 希格斯回声光谱为探测和理解超导状态的动态提供了一种方法.
- 这项研究阐明了THz驱动超导体中希格斯模式和QP激发之间的复杂相互作用.
- 这些发现为新型超导材料中的量子现象提供了新的见解.
相关概念视频
Atomic Emission Spectroscopy: Interference
285
In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
285
Interference and Superposition of Waves
5.5K
When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
5.5K
The de Broglie Wavelength
27.3K
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...
27.3K
Echo
607
The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
607
Atomic Absorption Spectroscopy: Interference
1.1K
Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
1.1K
Sound Waves: Interference
3.9K
Sound waves can be modeled either as longitudinal waves, wherein the molecules of the medium oscillate around an equilibrium position, or as pressure waves. When two identical waves from the same source superimpose on each other, the combination of two crests or two troughs results in amplitude reinforcement known as constructive interference. If two identical waves, that are initially in phase, become out of phase because of different path lengths, the combination of crests with troughs...
3.9K

