xQIT W. M. Keck Foundation Center For Extreme Quantum Information Theory at the Massachusetts Institute of Technology
News About People Research Publications Events Courses Positions Contact

Conference Homepage



Stefano Pirandola

Massachusetts Institute of Technology

Direct and Reverse Secret-Key Capacities of a Quantum Channel

November 19, 2008 - 11:40am-12:05pm

RLE Conference Center 36-428


We define the direct and reverse secret-key capacities of a memoryless quantum channel as the optimal rates that entanglement-based quantum key distribution protocols can reach by using a single forward classical communication (direct reconciliation) or a single feedback classical communication (reverse reconciliation). In particular, the reverse secret-key capacity is lower bounded by an additive quantity which is analytically computed for one-mode Gaussian


Stefano Pirandola is a visiting Scientist at the Research Laboratory of Electronics at the Massachusetts Institute of Technology and a Marie-Curie Fellow at the Dept. of Computer Science of the University of York (UK). From 2005 to 2007, he was a Postdoctoral Fellow at the Department of Physics of the University of Camerino (Italy) where he previously got his PhD in Physics. In 2001 he earned his Laurea degree in Physics (summa cum Laude) at University of Rome "La Sapienza" (Italy).