Degradation of a quantum directional reference frame as a random walk

Details Degradation of a quantum directional reference frame as a random walk Degradation of a quantum directional reference frame as a random walk

2006-07-17

arxiv.org/abs/quant-ph/0607107v3

J. Mod. Opt., 54, 2211 (2007)

Physics

Quantum Physics

5 pages, no figures. Comments are welcome. v2: several changes to clarify the key results. v3: journal reference added, acknow

Scientific paper

10.1080/09500340701289254

We investigate if the degradation of a quantum directional reference frame through repeated use can be modeled as a classical direction undergoing a random walk on a sphere. We demonstrate that the behaviour of the fidelity for a degrading quantum directional reference frame, defined as the average probability of correctly determining the orientation of a test system, can be fit precisely using such a model. Physically, the mechanism for the random walk is the uncontrollable back-action on the reference frame due to its use in a measurement of the direction of another system. However, we find that the magnitude of the step size of this random walk is not given by our classical model and must be determined from the full quantum description.

Affiliated with

Also associated with

No associations

Rating

Degradation of a quantum directional reference frame as a random walk 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 Degradation of a quantum directional reference frame as a random walk, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Degradation of a quantum directional reference frame as a random walk will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-506663