Title :
Unconditional continuous variable entanglement cascading
Author :
Hu, Xueyuan ; Gu, Ying ; Gong, Qihuang ; Guo, GuangCan
Author_Institution :
Dept. of Phys., Peking Univ., Beijing, China
Abstract :
A sequence of continuous-variable entanglement swapping is studied. We obtain the upper-bound of Gaussian cascaded entanglement and propose an unconditional protocol achieving it. We demonstrate entanglement can be unconditionally cascaded for any nonzero-squeezed entangled sources.
Keywords :
light sources; optical communication; optical squeezing; quantum communication; quantum entanglement; Gaussian cascaded entanglement swapping; continuous variable entanglement; nonzero-squeezed entangled sources; unconditional protocol; Cost function; Displacement measurement; Gain measurement; Joining processes; Physics; Protocols; Quantum entanglement; Repeaters; (270.5565) Quantum communications; (270.5585) Quantum information and processing; (270.6570) Squeezed states;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
