半导体核磁共振显微压力的质子全自旋量子门的实现  

An all-proton spin quantum gate in semiconductor spin magnetic resonance force system

作　　者：任韧[1] 徐进[1] 任大男[2] 

机构地区：[1]西安交通大学理学院物理系,生物医学工程所,西安710049 [2]西北大学数学系,西安710069

出　　处：《物理学报》2010年第11期8155-8159,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10775111);教育部留学科研基金(批准号:(2009)1001);西安市科技攻关项目(批准号:CXY09021)资助的课题~~

摘　　要：以实现质子全自旋量子门、观察半导体核子自旋态和量子计算为目的,依据样品的自旋-晶格弛豫时间和自旋-自旋弛豫时间,采用脉冲调制序列控制磁共振的条件和翻转旋转框架,计算了共振显微压力.结果表明,质子全自旋量子门具有高灵敏度和高Q操控性,通过扫描片段和激光干涉可以得到磁共振压力.共振压力兼具MRI和AFM优点,是一种强有力的通过核自旋实现量子计算获得量子信息的有效方法.We report on a kind of all-proton spin quantum gate realized by fabric silicon cantilever in a semiconductor spin magnetic resonance microscopy system.In the paper,the Rf pulse sequence control and the spin rotate frame system are adopted according to spin-lattice and spin-spin relaxation times,and the small resonance force,the sensitivity and the spin density matrix are studied.The results show that all-proton spin quantum gates have high Q controlling and detecting sensitivity,and gain the effective force oscillating through the resonance slice and fiber interferometer.The system has advantages of MRI and AFM characteristics.In addition,the calculation indicates that it is powerful tool of magnetic resonance force technology and useful way to achieve quantum computation and quantum information.

关 键 词：空间分辨率 共振显微 半导体光刻 电子束刻印 

分 类 号：O471.1[理学—半导体物理]