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Abstract:
The first experimental preparation is reported of an ultra-broadband continuously-tunable highly polarization-entangled photon-pair source via spontaneous parametric down-conversion in a single type-II phase-matched bulk periodically-poled KTiOPO4 (PPKTP) crystal. A tuning band of more than 60nm for the down-converted photons is achieved experimentally, which covers the C+L telecom bands. The photon pair generation rate is about 1.63 x 10(4) (s mWnm)(-1). The calculated S parameter values of CHSH inequality between 2.60 +/- 0.04 (minimum) and 2.72 +/- 0.07 (maximum) over the whole tunable range clearly demonstrate high entanglement of the source. In combination with the dense wavelength-division multiplexing (DWDM) technique, our source could be used to enhance the transmission capacity of a communication channel in the field of quantum communication.
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JOURNAL OF MODERN OPTICS
ISSN: 0950-0340
Year: 2013
Issue: 9
Volume: 60
Page: 720-725
1 . 1 6 6
JCR@2013
1 . 2 0 0
JCR@2023
ESI Discipline: PHYSICS;
JCR Journal Grade:3
CAS Journal Grade:4
Cited Count:
WoS CC Cited Count: 9
SCOPUS Cited Count: 9
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
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