Selective and efficient quantum state tomography and its application to quantum process tomography

被引：8
|
作者：
Bendersky, Ariel [1 ]
Pablo Paz, Juan [2 ,3 ]
机构：
[1] ICFO Inst Ciencies Foton, Castelldefels 08860, Barcelona, Spain
[2] Univ Buenos Aires, CONICET, Dept Fis FCEyN UBA, RA-1428 Buenos Aires, DF, Argentina
[3] Univ Buenos Aires, CONICET, IFIBA, RA-1428 Buenos Aires, DF, Argentina
来源：
PHYSICAL REVIEW A | 2013年 / 87卷 / 01期
关键词：
D O I：
10.1103/PhysRevA.87.012122
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a method for quantum state tomography that enables the efficient estimation, with fixed precision, of any of the matrix elements of the density matrix of a state, provided that the states from the basis in which the matrix is written can be efficiently prepared in a controlled manner. Furthermore, we show how this algorithm is well suited for quantum process tomography, enabling one to perform selective and efficient quantum process tomography. DOI: 10.1103/PhysRevA.87.012122
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页数：5
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