相关实验视频
Updated: Sep 17, 2025

06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
9.1K
概括
我们探索使用电磁诱导透明度控制暗态极化空间模式. 这使得用于光子记忆和光调节的应用,可以对存储光进行操作.
科学领域:
- 量子光学就是量子光学.
- 原子物理 原子物理
- 光子学 是一个光子学.
背景情况:
- 电磁诱导透明度 (EIT) 可以控制光的传播.
- 暗态极子是具有独特光物质相互作用特性的量子状态.
- 空间模式控制对于先进的光子应用至关重要.
研究的目的:
- 从理论上研究暗态极化空间模式的生成和动态控制.
- 用合成潜能展示使用离散空间模式的工程.
- 探索光子数据操纵中的应用.
主要方法:
- 使用合成标量和向量潜力的组合.
- 设计暗态极子的离散空间模式.
- 在这些模式中分析量子干扰现象.
- 通过拉比振荡和受刺激的拉曼亚流通验证概念.
主要成果:
- 证明了暗态极立子的离散空间模式的工程.
- 展示了空间模式之间的量子干扰.
- 在两个空间模式之间验证了拉比振荡.
- 在三个空间模式之间确认了刺激的拉曼亚流通通道.
结论:
- 拟议的方法允许动态控制暗态极化空间模式.
- 这种技术可以重新分配存储的光子数据.
- 潜在的应用包括光子记忆优化和检索光调制.
相关概念视频
Generating Electromagnetic Radiations
4.1K
The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
4.1K
MOSFET: Enhancement Mode
492
Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
492
Fermi Level Dynamics
350
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...
350
Carrier Generation and Recombination
819
Carrier generation is the process by which electron-hole pairs (EHPs) are created within the semiconductor. In direct-bandgap semiconductors, such as gallium arsenide (GaAs), this occurs efficiently when energy absorption prompts valence electrons to leap into the conduction band, leaving behind holes.
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...
819
State Space Representation
296
The frequency-domain technique, commonly used in analyzing and designing feedback control systems, is effective for linear, time-invariant systems. However, it falls short when dealing with nonlinear, time-varying, and multiple-input multiple-output systems. The time-domain or state-space approach addresses these limitations by utilizing state variables to construct simultaneous, first-order differential equations, known as state equations, for an nth-order system.
Consider an RLC circuit, a...
Consider an RLC circuit, a...
296

