Title :
Continuous variable quantum teleportation and quantum secret sharing
Author :
Lam, Ping Koy ; Bowen, W.P. ; Treps, Nicolas ; Buchler, B.C. ; Schnabel, Raik ; Symul, Thomas ; Sanders, Barry C. ; Tyc, Tomas ; Ralph, Timothy C.
Author_Institution :
Dept. of Phys., Australian Nat. Univ., Canberra, ACT, Australia
Abstract :
Two quantum communication protocols in the continuous variable regime are studied using a stable source of continuous variable Einstein-Podolsky-Rosen (EPR) entanglement generated from a pair of optical parametric amplifiers. Demonstration of quantum teleportation of the quadrature amplitude information of a light field and realization of a (2,3) threshold QSS (quantum secret sharing) scheme using an EPR entanglement, optical interferometers and an electro-optic feedforward loop are reported.
Keywords :
EPR paradox; light interferometers; optical parametric amplifiers; protocols; quantum cryptography; quantum entanglement; teleportation; Einstein-Podolsky-Rosen entanglement; continuous variable quantum secret sharing; continuous variable quantum teleportation; electro-optic feedforward loop; optical interferometers; optical parametric amplifiers; quadrature amplitude information; quantum communication protocols; Cryptography; Nonlinear optics; Optical amplifiers; Optical interferometry; Paramagnetic resonance; Protocols; Quantum entanglement; Semiconductor optical amplifiers; Stimulated emission; Teleportation;
Conference_Titel :
Quantum Electronics Conference, 2003. EQEC '03. European
Print_ISBN :
0-7803-7733-8
DOI :
10.1109/EQEC.2003.1314268
