Time-cost analysis of a quantum key distribution system clocked at 100   MHz
  We describe the realization of a quantum key distribution (QKD) system clocked at 100 MHz. The system includes classical postprocessing implemented via software, and is operated over a 12 km standard telecommunication dark fiber in a real-world environment. A time-cost analysis of the sifted, error-corrected, and secret key rates relative to the raw key rate is presented, and the scalability of our implementation with respect to higher secret key rates is discussed. 
Xiaofan Mo, Itzel Lucio Martinez, Philip Chan, Chris Healey, Steve   Hosier and Wolfgang Tittel
quant-ph