Physics – Quantum Physics
Scientific paper
2011-01-07
Phys. Rev. Lett. 106, 240502 (2011)
Physics
Quantum Physics
4 pages, 4 figures
Scientific paper
10.1103/PhysRevLett.106.240502
When classical information is sent over a quantum channel, attaining the ultimate limit to channel capacity requires the receiver to make joint measurements over long codeword blocks. For a pure-state channel, we construct a receiver that can attain the ultimate capacity by applying a single-shot unitary transformation on the received quantum codeword followed by simultaneous (but separable) projective measurements on the single-modulation-symbol state spaces. We study the ultimate limits of photon-information-efficient communications on a lossy bosonic channel. Based on our general results for the pure-state quantum channel, we show some of the first concrete examples of codes and structured joint-detection optical receivers that can achieve fundamentally higher (superadditive) channel capacity than conventional receivers that detect each modulation symbol individually.
No associations
LandOfFree
Structured optical receivers to attain superadditive capacity and the Holevo limit 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 Structured optical receivers to attain superadditive capacity and the Holevo limit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Structured optical receivers to attain superadditive capacity and the Holevo limit will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-8485