Quantum Communication Protocol Employing Weak Measurements

Details Quantum Communication Protocol Employing Weak Measurements Quantum Communication Protocol Employing Weak Measurements

1999-08-01

arxiv.org/abs/quant-ph/9908006v2

Phys. Rev. A 61, 050301 (R), (2000).

Physics

Quantum Physics

5 pages, Revtex, 1 figure. A second protocol is added, where by a similar set of weak measurement Alice can send, instead of r

Scientific paper

10.1103/PhysRevA.61.050301

We propose a communication protocol exploiting correlations between two events with a definite time-ordering: a) the outcome of a {\em weak measurement} on a spin, and b) the outcome of a subsequent ordinary measurement on the spin. In our protocol, Alice, first generates a "code" by performing weak measurements on a sample of N spins. The sample is sent to Bob, who later performs a post-selection by measuring the spin along either of two certain directions. The results of the post-selection define the "key', which he then broadcasts publicly. Using both her previously generated code and this key, Alice is able to infer the {\em direction} chosen by Bob in the post-selection. Alternatively, if Alice broadcasts publicly her code, Bob is able to infer from the code and the key the direction chosen by Alice for her weak measurement. Two possible experimental realizations of the protocols are briefly mentioned.

Affiliated with

Also associated with

No associations

Rating

Quantum Communication Protocol Employing Weak Measurements 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 Communication Protocol Employing Weak Measurements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Communication Protocol Employing Weak Measurements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-37704