公开(公告)号：US20090259905A1

公开(公告)日：2009-10-15

申请号：US12182378

申请日：2008-07-30

申请人： Marcus Silva ,  Martin Roetteler

发明人： Marcus Silva ,  Martin Roetteler

IPC分类号： H04L1/00 ,  G06F11/30

CPC分类号： B82Y10/00 ,  G06N99/002

摘要： A system and method for characterizing noise in a quantum system includes determining pulse sequences for unitary twirling operations. Twirling processes are applied to a quantum system to calibrate errors and to determine channel parameters. Noise characteristics are determined from calibration data collected to calibrate the errors and to determine the channel parameters. The noise characteristics are characterized to determine if the noise is independent relaxation of qubits or collective relaxation of qubits.

摘要翻译： 用于表征量子系统中的噪声的系统和方法包括确定用于单次旋转操作的脉冲序列。 旋转过程应用于量子系统以校准误差并确定通道参数。 噪声特性根据收集的校准数据确定，以校准误差并确定通道参数。 噪声特征的特征在于确定噪声是否是量子位的独立松弛或量子位的集体松弛。

公开(公告)号：US20090241013A1

公开(公告)日：2009-09-24

申请号：US12050566

申请日：2008-03-18

申请人： MARTIN ROETTELER

发明人： MARTIN ROETTELER

IPC分类号： H03M13/19 ,  G06F11/10

CPC分类号： H03M13/1191 ,  H03M13/19

摘要： A system and method for dynamical decoupling of a quantum system includes forming a graph including elements to account for decoupling sequence effects represented as nodes in the graph and soft pulses applied being represented as edges in the graph. Sequences which visit edges and nodes in the graph are provided. Binary strings corresponding to the nodes in a coordinate system are mapped using a fixed linear error correcting code. A decoupling method is provided based upon a matrix formed using the error correcting code to determine features of the soft pulses to decouple environmental effects from the quantum system.

摘要翻译： 用于量子系统的动态解耦的系统和方法包括形成包括元素的图，以考虑表示为图中的节点的解耦序列效应，并且所施加的软脉冲被表示为图中的边。 提供访问图形中边缘和节点的顺序。 使用固定的线性纠错码映射与坐标系中的节点对应的二进制字符串。 基于使用纠错码形成的矩阵来提供解耦方法，以确定软脉冲的特征以使环境效应与量子系统解耦。