Optimal quantum-state reconstruction for cold trapped ions
Optimal quantum-state reconstruction for cold trapped ions
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DOI：
10.1103/physreva.77.060303
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发表时间：
2008-05
影响因子：
2.9
通讯作者：
A. Klimov;Carlos Muñoz;A. Fern'andez;Carlos Saavedra
中科院分区：
文献类型：
--
作者：
A. Klimov;Carlos Muñoz;A. Fern'andez;Carlos Saavedra
我们研究了确定多量子位系统状态的最佳层析重建方案的物理实现，其中捕获离子用于定义量子位。该方案基于相互无偏测量的使用和H. Häffner\emph{等}[Nature \textbf{438}, 643-646(2005)]中描述的物理信息。我们为不同类型的无偏测量引入了物理复杂性的概念，并从捕获离子的一个和两个量子比特门的角度分析了它们的产生。
We study the physical implementation of an optimal tomographic reconstruction scheme for the case of determining the state of a multi-qubit system, where trapped ions are used for defining qubits. The protocol is based on the use of mutually unbiased measurements and on the physical information described in H. H\"{a}ffner \emph{et. al} [Nature \textbf{438}, 643-646 (2005)]. We introduce the concept of physical complexity for different types of unbiased measurements and analyze their generation in terms of one and two qubit gates for trapped ions.