Open AccessExperimental study of continuous-variable quantum teleportation
Author(s) -
Zhai Ze-Hui,
Yongming Li,
Wang Shao-Kai,
Jin Guo,
Tiancai Zhang,
Jiangrui Gao
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.2710
Subject(s) - quantum teleportation , teleportation , quantum entanglement , continuous variable , physics , superdense coding , quantum mechanics , fidelity , quantum channel , quantum correlation , quantum , computer science , quantum discord , telecommunications , mathematics , statistics
The experimental demonstration of quantum teleportation for continuous variables using the squeezed_state entanglement generated by a type II phase matching opt ical parametric amplifier(OPA) is reported. Type II OPA operating at deamplification can generate amplitude_anticorrelated and phase_correlated entanglements, which can be used in quantum teleportation scheme by direct Bell_ state measurement. The correlation of 2dB was obtained with a pair of KTP crystals in the cavity. The inferred teleportation fidelity is 060,which when correlated for the e fficiency of detection by the output observer, gives a fidelity of 057 The i mperfect factors in detection are also discussed.