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Category Cars
Created 2013-12-19
Owner xumww9685
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德国和瑞士科学家组成的研究团队在11月11日出版的《迷信》杂志上讲演称，他们发现了一种能够将光子和机械振动耦合在一起的新方式，有望在通讯和量子信息技巧范畴“大展拳脚”，用于研发新鲜的全光缓存器、节制量子层级的光学机械体系等。

负责此项研究的德国马克斯普朗克量子光学研讨所物理学家托拜厄斯·基彭贝格与洛桑联邦理工大学光子跟量子测试试验室的研究团队配合，组建了一套设备。在这套装备中，穿过一个光学微共振腔的一束光线可能被第二束更增强烈的光芒把持，因而，该设备就犹如光敏晶体管。光敏晶体管是指在有光照射时能输出放大的电信号,同乐城娱乐城，而无光照耀时便处于截止状况的三极管，其不仅有光电转换作用，而且还能放大光信号。

该研究团队的光学微共振腔具备两个特色：其一，它将光线收集在一个渺小的玻璃结构中，领导这束光线进入一种轮回模式。其二，这种结构就像玻璃酒杯一样，会以无比准确的频率震动。但这种构造十分细微(只有人头发丝直径的多少分之一)，其振动频率是玻璃羽觞振动频率的10000多倍。

当光束射入该设备时，光子会发生辐射压力，这种压力会被共振腔放大。其成果是，压力一直加强，导致共振腔变形，将光线和机械震撼耦合在一起。假如应用两束光线，存在机械振动的两束激光之间的交互作用会制作出一种光学“开光”：较强的“掌握”激光可以翻开或者封闭较弱的“探测”激光，正如电子晶体管中呈现的情形一样。

将辐射转化为震动被普遍利用于移着手机中，比方，手机接受器可以将电磁辐射转化为机械振动，有效地过滤信号,查帐1娱乐城。然而，科学家始终不能使用光来进行这样的转化。当初，这套设备首次将光子光场转化为机械振动,时时博娱乐城，这将在通信领域大有用武之地。例如，研究人员可以设计出离奇的全光缓存器，在几秒钟之内存储大批光学信息。

马克斯普朗克研究所的科学家阿尔伯特·希瑟说，两年多以前科学家就晓得这种效应在实践上是可行的，但将其变为事实比拟难。洛桑联邦理工大学资深科学家萨缪尔·德利格利斯表现，理论和实际完善地联合在一起令人高兴。

目前，寰球各地的研究人员正千方百计控制量子层级的光学机械系统，这种新奇的可开关耦合系统可以被作为混杂量子系统的一个主要的接口，辅助研究职员扫清上述阻碍。

《科技日报》
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