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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.

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Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

完全可编程的空间光子Ising机器通过焦平面划分.

Daniele Veraldi¹, Davide Pierangeli², Silvia Gentilini²

¹Sapienza University, Department of Physics, 00185 Rome, Italy.

Physical review letters

|February 28, 2025

概括

此摘要是机器生成的。

研究人员开发了一种完全可编程的空间光子Ising机器 (SPIM),以实现更快,更节能的优化. 这一突破克服了当前SPIM中的可编程性限制,使其在复杂问题解决中具有更广泛的应用.

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Last Updated: May 11, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

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科学领域:

量子计算和优化硬件. 量子计算和优化硬件.
开发新的光学计算架构.
在非·诺伊曼计算范式的进步.

背景情况:

抛光机为NP难度优化问题提供超快,高能效的解决方案.
空间光子Ising机器 (SPIM) 利用光学计算加速计算.
目前的SPIM面临着可编程性的限制,限制了它们的应用范围.

研究的目的:

在保持可扩展性的同时,在SPIM中实现完全可编程性.
克服现有的SPIM中部分可编程性的关键限制.
为了使SPIM能够解决更广泛的组合优化问题.

主要方法:

引入了一种基于SPIM焦点平面划分的新型操作方法.
将一般的Ising问题分解成马蒂斯哈密尔顿式,用于光学计算.
同时通过测量摄像头传感器上的光强度来计算能量.

主要成果:

实验证明了一种完全可编程的SPIM,能够解决多达32旋转的Ising模型.
在最大切割图表上实现了基本状态解决方案的高成功概率.
模拟表明,随着旋转数量的增加,准确度的缩放是有利的.

结论:

开发的SPIM实现了完全的可编程性和可扩展性,解决了光子Ising机器的一个关键挑战.
这一进步扩大了SPIMs的适用性,用于各种二次式不受约束的二进制优化问题.
完全可编程的SPIM加强了其作为优化领先的非·诺伊曼硬件范式的地位.