补偿同时系统误差的级联复合脉冲
Concatenated composite pulses compensating simultaneous systematic errors
摘要：
在NMR实验和量子计算中，许多脉冲（量子门）序列被称为复合脉冲，被开发用于抑制两个主要误差之一：脉冲长度误差和非共振误差。在本文中，我们描述了一个通用的处方，设计一个单量子比特级联复合脉冲（CCCP），是对两种类型的错误同时鲁棒。为此，我们引入了一个新的属性，这是满足一些复合脉冲，并足以获得CCCP。然后，我们介绍了一种通用的方法来设计CCCP具有更短的执行时间和更少的脉冲数。
英文摘要：
In NMR experiments and quantum computation, many pulse (quantum gate) sequences called the composite pulses, were developed to suppress one of two dominant errors; a pulse length error and an off-resonance error. We describe, in this paper, a general prescription to design a single-qubit concatenated composite pulse (CCCP) that is robust against two types of errors simultaneously. To this end, we introduce a new property, which is satisfied by some composite pulses and is sufficient to obtain a CCCP. Then we introduce a general method to design CCCPs with shorter execution time and less number of pulses.
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