We report on a high-speed quantum cryptography
system that utilizes simultaneous entanglement in polarization and in
“time-bins". With multiple degrees of freedom contributing to the
secret key, we can achieve over ten bits of random entropy per detected coincidence. In addition, we collect from multiple spots o
the downconversion cone to further amplify the data rate, allowing usto achieve over 10 Mbits of secure key per second.
[1] Julio T. Barreiro, et. al., Phys. Rev. Lett. 95, 26051 (2005).
[2] I. Ali-Khan, C. J. Broadbent, and J. C. Howell, Phys. Rev. Lett. 98,
060503 (2007).
[3] H.-K. Lo, H. F. Chau, and M. Ardehali, J. Cryptol. 18, 133 (2005).
[1] Julio T. Barreiro, et. al., Phys. Rev. Lett. 95, 26051 (2005).
[2] I. Ali-Khan, C. J. Broadbent, and J. C. Howell, Phys. Rev. Lett. 98,
060503 (2007).
[3] H.-K. Lo, H. F. Chau, and M. Ardehali, J. Cryptol. 18, 133 (2005).
@article{"International Journal of Engineering, Mathematical and Physical Sciences:54659", author = "Bradley Christensen and Kevin T. McCusker and Daniel J. Gauthier and Daniel Kumor and Venkat Chandar and P. G. Kwiat", title = "Higher-Dimensional Quantum Cryptography", abstract = "We report on a high-speed quantum cryptography
system that utilizes simultaneous entanglement in polarization and in
“time-bins". With multiple degrees of freedom contributing to the
secret key, we can achieve over ten bits of random entropy per detected coincidence. In addition, we collect from multiple spots o
the downconversion cone to further amplify the data rate, allowing usto achieve over 10 Mbits of secure key per second.", keywords = "
Downconversion, Hyper-entanglement, Quantum Cryptography", volume = "7", number = "1", pages = "48-3", }