A strong converse for classical channel coding using entangled inputs

Details A strong converse for classical channel coding using entangled inputs A strong converse for classical channel coding using entangled inputs

2009-03-16

arxiv.org/abs/0903.2838v1

Phys. Rev. Lett. 103, 070504 (2009)

Physics

Quantum Physics

9 pages, revtex

Scientific paper

A fully general strong converse for channel coding states that when the rate of sending classical information exceeds the capacity of a quantum channel, the probability of correctly decoding goes to zero exponentially in the number of channel uses, even when we allow code states which are entangled across several uses of the channel. Such a statement was previously only known for classical channels and the quantum identity channel. By relating the problem to the additivity of minimum output entropies, we show that a strong converse holds for a large class of channels, including all unital qubit channels, the d-dimensional depolarizing channel and the Werner-Holevo channel. This further justifies the interpretation of the classical capacity as a sharp threshold for information-transmission.

Affiliated with

Also associated with

No associations

Rating

A strong converse for classical channel coding using entangled inputs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A strong converse for classical channel coding using entangled inputs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A strong converse for classical channel coding using entangled inputs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-490583