1303.0606 (Laszlo Gyongyosi)

Polar Codes for Conjugate Degradable Quantum Channels    [PDF]

Laszlo Gyongyosi

We investigate polar codes for quantum communication over a conjugate degradable channel. For a conjugate degradable channel, the environment state can be expressed from the channel output state up to a complex conjugation. We show that for a channel that is both degradable and conjugate degradable, the conjugate degradability property can be exploited and higher quantum data rates can be achieved in comparison to those of a degradable channel. We define an extended codeword set for the channel and give the achievable rates of quantum communication.

View original: http://arxiv.org/abs/1303.0606