Polaractivation of hidden private classical capacity region of quantum channels

Laszlo Gyongyosi
2013 2013 IEEE Symposium on Swarm Intelligence (SIS)  
We define a new phenomenon for communication over noisy quantum channels. The investigated solution is called polaractivation and based on quantum polar encoding. Polaractivation is a natural consequence of the channel polarization effect in quantum systems and makes possible to open the hidden capacity regions of a noisy quantum channel by using the idea of rate increment. While in case of a classical channel only the rate of classical communication can be increased, in case of a quantum
more » ... l the channel polarization and the rate improvement can be exploited to open unreachable capacity regions. We demonstrate the results for the opening of private classical capacity-domain. We prove that the method works for arbitrary quantum channels if a given criteria in the symmetric classical capacity is satisfied. We also derived a necessary lower bound on the rate of classical communication for the polaractivation of private classical capacity-domain.
doi:10.1109/sis.2013.6615170 dblp:conf/swis/Gyongyosi13 fatcat:zh7g55mrjbbvrix6vhpyiuzzi4