Coherent State Quantum Key Distribution with Multi Letter Phase-Shift Keying

Details Coherent State Quantum Key Distribution with Multi Letter Phase-Shift Keying Coherent State Quantum Key Distribution with Multi Letter Phase-Shift Keying

2009-02-11

arxiv.org/abs/0902.1895v2

Physics

Quantum Physics

11 pages, 2 figures, 1 table. Comments welcome

Scientific paper

We present a protocol for quantum key distribution using discrete modulation of coherent states of light. Information is encoded in the variable phase of coherent states which can be chosen from a regular discrete set ranging from binary to continuous modulation, similar to phase-shift-keying in classical communication. Information is decoded by simultaneous homodyne measurement of both quadratures and requires no active choice of basis. The protocol utilizes either direct or reverse reconciliation, both with and without postselection. We analyze the security of the protocol and show how to enhance it by the optimal choice of all variable parameters of the quantum signal.

Affiliated with

Also associated with

No associations

Rating

Coherent State Quantum Key Distribution with Multi Letter Phase-Shift Keying 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 Coherent State Quantum Key Distribution with Multi Letter Phase-Shift Keying, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coherent State Quantum Key Distribution with Multi Letter Phase-Shift Keying will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-488002