Higher-Dimensional Quantum Cryptography
Bradley Christensen, Kevin T. McCusker, Daniel J. Gauthier, Daniel R. Kumor, Venkat Chandar, Paul G. Kwiat · Research in Optical Sciences · 2014
We report on a high-speed quantum cryptography system with simultaneous entanglement in polarization and “time-bins”. We use multiple degrees of freedom and multiple spots on the downconversion cone to achieve 14 Mbits/s of secure key.