Quantum receiver beyond the standard quantum limit of coherent optical communication

Details Quantum receiver beyond the standard quantum limit of coherent optical communication Quantum receiver beyond the standard quantum limit of coherent optical communication

2011-03-29

arxiv.org/abs/1103.5592v1

Phys. Rev. Lett. 106, 250503 (2011)

Physics

Quantum Physics

5 pages, 3 figures

Scientific paper

The most efficient modern optical communication is known as coherent communication and its standard quantum limit (SQL) is almost reachable with current technology. Though it has been predicted for a long time that this SQL could be overcome via quantum mechanically optimized receivers, such a performance has not been experimentally realized so far. Here we demonstrate the first unconditional evidence surpassing the SQL of coherent optical communication. We implement a quantum receiver with a simple linear optics configuration and achieve more than 90% of the total detection efficiency of the system. Such an efficient quantum receiver will provide a new way of extending the distance of amplification-free channels, as well as of realizing quantum information protocols based on coherent states and the loophole-free test of quantum mechanics.

Affiliated with

Also associated with

No associations

Rating

Quantum receiver beyond the standard quantum limit of coherent optical communication 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 Quantum receiver beyond the standard quantum limit of coherent optical communication, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum receiver beyond the standard quantum limit of coherent optical communication will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-163116