FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS
|
2003年
/
51卷
/
4-5期
关键词:
D O I:
10.1002/prop.200310058
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
We create pairs of non-degenerate time-bin entangled photons at telecom wavelengths with ultra-short pump pulses. Entanglement is shown by performing Bell kind tests of the Franson type with visibilities of up to 91%. As time-bin entanglement can easily be protected from decoherence as encountered in optical fibers, this experiment opens the road for complex quantum communication protocols over long distances.