title: Quantum internet using code division multiple access.
abstract: A crucial open problem inS large-scale quantum networks is how to efficiently transmit quantum data among many pairs of users via a common data-transmission medium. We propose a solution by developing a quantum code division multiple access (q-CDMA) approach in which quantum information is chaotically encoded to spread its spectral content, and then decoded via chaos synchronization to separate different sender-receiver pairs. In comparison to other existing approaches, such as frequency division multiple access (FDMA), the proposed q-CDMA can greatly increase the information rates per channel used, especially for very noisy quantum channels.
authors.affiliation: CEMS, RIKEN, Saitama, 351-0198, Japan. jing-zhang@mail.tsinghua.edu.cn
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.forename: Yu-xi
authors.initials: YX
authors.lastname: Liu
authors.forename: Sahin Kaya
authors.initials: SK
authors.lastname: Ozdemir
authors.forename: Re-Bing
authors.initials: RB
authors.lastname: Wu
authors.forename: Feifei
authors.initials: F
authors.lastname: Gao
authors.forename: Xiang-Bin
authors.initials: XB
authors.lastname: Wang
authors.forename: Lan
authors.initials: L
authors.lastname: Yang
authors.forename: Franco
authors.initials: F
authors.lastname: Nori