Quantum tomography of the optical four level states

被引：0
|
作者：
Kulik, SP [1 ]
Maslennikov, GA
Moreva, EV
Straupe, SS
机构：
[1] Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119899, Russia
[2] Natl Inst Singapore, Singapore, Singapore
[3] State Univ, Moscow Engn Phys Inst, Moscow 115409, Russia
来源：
PHOTON ECHO AND COHERENT SPECTROSCOPY 2005 | 2006年 / 6181卷
基金：
俄罗斯基础研究基金会;
关键词：
ququart; biphoton field; entanglement;
D O I：
10.1117/12.674976
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We discuss a procedure of measurement of an arbitrary quantum state of an optical system in Hilbert space with the dimension d = 4. Such states can be realized using a collinear frequency-nondegenerate regime of spontaneous parametric down-conversion. The method has been tested for a number of polarization states of a biphoton field. A high accuracy of the reconstruction of the states (above 99%) indicates that the procedures proposed for reconstructing the quantum state of the system are adequate.
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页数：8
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