基于对称性的飞秒光致多光子模式分类模拟计算
Femtosecond Photo-Induced Multiphoton Analog Computation for Symmetry-Based Pattern Classification
摘要：
多光子飞秒相干控制用于实现创新的光诱导模拟相干计算，通常可能是未来的“智能硬件”的基础。具体实现的计算任务是将未知序列分类为以下三组之一：（i）由相同数字组成的常数序列，（ii）围绕给定点反对称的序列，或（iii）两者都不是。输入序列被编码成一个宽带飞秒脉冲的光谱相位和计算任务正在进行的照射物理系统的多光子非线性响应。这里，它是钠原子（Na）中的同时相干双光子和三光子吸收。相应的计算资源是由飞秒脉冲的宽光谱光诱导的初始到最终多光子激发路径的流形。答案是通过测量只有两个可观测量，这是两个国家的人口通过两个和三个光子吸收过程激发。因此，计算任务是在一个恒定数量的操作完成，而不管序列长度。因此，所提出的方案，其中飞秒脉冲作为一个查询和照射的物理系统作为一个预言，提供了足够的增益的计算复杂性。
英文摘要：
Multiphoton femtosecond coherent control of is used for implementing innovative photo-induced analog coherent computation that generally might be a basis for future "smart hardware". The specific implemented computational task the classification of an unknown sequence into one of the three groups: (i) a constant sequence that is composed of identical numbers, (ii) a sequence that is antisymmetric around a given point, or (iii) neither. The input sequence is encoded into the spectral phases of a broadband femtosecond pulse and the computational task is being carried out by the multiphoton nonlinear response of the irradiated physical system. Here, it is the simultaneous coherent two- and three-photon absorption in atomic sodium (Na). The corresponding computational resources are the manifold of initial-to-final multiphoton excitation pathways photo-induced by the broad spectrum of the irradiating femtosecond pulse. The answer is obtained by measuring only two observables, which are two state-populations excited via the two- and three-photon absorption processes. Hence, the computational task is accomplished in a constant number of operations irrespective of the sequence length. As such, the presented scheme, where the femtosecond pulse serves as a query and the irradiated physical system serves as an oracle, provides a sufficient gain in the computational complexity.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
