Quantum networking with atomic ensembles

DLCZ;Quantum memory;Quantum repeater

Matsukevich, Dzmitry ; Physics

University:Georgia Institute of Technology

Department:Physics

关键词: DLCZ;    Quantum memory;    Quantum repeater;   

Others  :  https://smartech.gatech.edu/bitstream/1853/11583/1/matsukevich_dzmitry_200608_phd.pdf

美国|英语

来源: SMARTech Repository

【 摘 要 】

Quantum communication networks enable secure transmission of information between remote sites. However, at present, photon losses in the optical fiber limit communication distances to less than 150 kilometers. The quantum repeater idea allows extension of these distances. In practice, it involves the ability to store quantum information for a long time in atomic systems and coherently transfer quantum states between matter and light. Previously known schemes involved atomic Raman transitions in the UV or near-infrared and suffered from severe loss in optical fiber that precluded long-distance quantum communication.