Quantum internet using code division multiple access
  A crucial open problem in 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. 
Jing Zhang, Yu-xi Liu, Sahin Kaya Ozdemir, Re-Bing Wu, Feifei Gao,   Xiang-Bin Wang, Lan Yang, and Franco Nori
quant-ph