相关实验视频
Updated: Jan 26, 2026

07:59
Molecular Entanglement and Electrospinnability of Biopolymers
Published on: September 3, 2014
15.1K
受纠影响的频率敏捷测距仪
Weijie Nie1, Peide Zhang2, Alex McMillan2
1Quantum Engineering Technology Labs, H. H. Wills Physics Laboratory and School of Electrical, Electronic and Mechanical Engineering, University of Bristol, BS8 1FD, Bristol, UK. weijie.nie@bristol.ac.uk.
Nature communications
|January 24, 2026
概括
研究人员开发了一种用于量子增强遥感的经典激光源. 这种与时间相关的能量源为实际应用提供了显著的降噪和更好的亮度.
科学领域:
- 量子力学就是量子力学.
- 有光学传感器的感应器.
- 应用物理学的应用物理学
背景情况:
- 量子纠为抗噪声提供了非经典的相关性.
- 能量-时间纠在量子照明中提供了优势.
- 现有的量子源在实际应用中面临着亮度限制.
研究的目的:
- 开发一个实用的能量-时间相关源用于遥感.
- 为了克服量子照明中的量子亮度限制.
- 为了证明降低噪音和高精度测距.
主要方法:
- 使用了经典的激光源.
- 为频率敏捷的伪随机源实施了光纤色散和电光调制.
- 采用了灵感来自量子纠的能量-时间相关性.
主要成果:
- 实现了量子亮度超过了六个数量级的经典限制.
- 在154.8m以低功率 (48μW) 证明了精确的距离测量 (<0.1mm).
- 在100毫秒的集成时间内,在不同的太阳背景和天气条件下经过验证的降噪.
结论:
- 开发的源适用于实际的遥感应用.
- 该系统比传统的基于量子照明的测距器具有优势.
- 突出了经典激光源在量子增强传感方面的潜力.
相关概念视频
Mechanism of Breathing I: Inspiration
3.1K
Introduction to Inspiration: The Respiratory System in Action
The respiratory system, an essential network for breathing, comprises the conducting and respiratory zones, each playing a crucial role in the overall process of respiration. Let us explore the detailed mechanism of inspiration, or inhalation, which is the first phase of the respiratory cycle.
Pathway of Air during Inspiration
During inspiration, air enters our body through the nose or mouth and moves through the conducting zone,...
The respiratory system, an essential network for breathing, comprises the conducting and respiratory zones, each playing a crucial role in the overall process of respiration. Let us explore the detailed mechanism of inspiration, or inhalation, which is the first phase of the respiratory cycle.
Pathway of Air during Inspiration
During inspiration, air enters our body through the nose or mouth and moves through the conducting zone,...
3.1K
Frequency-dependent Selection
23.3K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
23.3K
What is a Frequency Distribution
26.2K
A frequency is the number of times a value of the data occurs. The sum of all the frequency values represents the total number of students included in the sample. It is commonly used to group data of quantitative types. Frequency distributions can be displayed in a table, histogram, line graph, dot plot, or pie chart, just to name a few. A histogram is a graphical representation of tabulated frequencies, shown as adjacent rectangles, erected over discrete intervals (bins), with an area equal to...
26.2K
Mean From a Frequency Distribution
21.6K
Sometimes, data gathered from an experiment on a large sample or population are organized into concise tables. In such cases, the frequency of the quantitative data set is plotted in the form of a table. Or else, the data values are grouped into the quantity’s intervals, which form classes, and their respective frequencies are known. That is, the data values are distributed over different categories or classes. This is known as frequency distribution.
When such a data set is encountered,...
When such a data set is encountered,...
21.6K
Frequency Response of BJT
1.4K
The frequency response of a Bipolar Junction Transistor (BJT) in a common-emitter configuration is critical to its functionality, especially in applications involving amplification of alternating current (AC) signals. This response can be analyzed through low-frequency and high-frequency equivalent circuits, considering various internal parameters and external conditions.
Low-Frequency Response: At low frequencies, the behavior of the BJT is determined by its DC bias point, which is set by the...
Low-Frequency Response: At low frequencies, the behavior of the BJT is determined by its DC bias point, which is set by the...
1.4K
Load-frequency control
651
Load-frequency control (LFC) is vital for maintaining power system stability, ensuring that frequency and power flows remain within acceptable limits during load changes. Turbine-governor control eliminates rotor accelerations and decelerations following load changes. However, a steady-state frequency error persists when the change in the turbine-governor reference setting is zero. In an interconnected power system, each area agrees to export or import a scheduled amount of power through...
651

