Experimental realization of linear-optical partial SWAP gates

被引：42

作者：

Cernoch, Antonin ^{[1
,2
]}

Soubusta, Jan ^{[1
,2
]}

Bartuskova, Lucie ^{[3
]}

Dusek, Miloslav ^{[3
]}

Fiurasek, Jaromir ^{[3
]}

机构：

[1] Palacky Univ, Joint Lab Opt, Olomouc 77907, Czech Republic

[2] Acad Sci Czech Republic, Inst Phys, Olomouc 77907, Czech Republic

[3] Palacky Univ, Dept Opt, Olomouc 77200, Czech Republic

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.100.180501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a linear-optical implementation of a class of two-qubit partial SWAP gates for polarization states of photons. Different gate operations, including the SWAP and entangling root SWAP, can be obtained by changing a classical control parameter, namely, the path difference in the interferometer. Reconstruction of output states, full quantum process tomography, and an evaluation of entanglement of formation prove very good performance of the gates.

引用

页数：4

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