Selective and efficient estimation of parameters for quantum process tomography

被引：83

作者：

Bendersky, Ariel ^{[1
]}

Pastawski, Fernando ^{[2
]}

Paz, Juan Pablo ^{[1
]}

机构：

[1] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, RA-1428 Buenos Aires, DF, Argentina

[2] Univ Nacl Cordoba, Fac Matemat Astron & Fis, RA-5000 Cordoba, Argentina

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.100.190403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a new method for quantum process tomography enabling the efficient estimation, with fixed precision, of any of the parameters characterizing a quantum channel. The estimation strategy depends upon the set of matrix elements one selects to estimate. Furthermore, we describe a way to efficiently gather all the information required to efficiently estimate any average survival probability of the channel (i.e., to measure any diagonal element of its chi matrix).

引用

页数：4

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