Continuous weak measurement of quantum coherent oscillations

Details Continuous weak measurement of quantum coherent oscillations Continuous weak measurement of quantum coherent oscillations

2000-02-14

arxiv.org/abs/cond-mat/0002203v1

Phys. Rev. B 64, 165310 (2001)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevB.64.165310

We consider the problem of continuous quantum measurement of coherent oscillations between two quantum states of an individual two-state system. It is shown that the interplay between the information acquisition and the backaction dephasing of the oscillations by the detector imposes a fundamental limit, equal to 4, on the signal-to-noise ratio of the measurement. The limit is universal, e.g., independent of the coupling strength between the detector and system, and results from the tendency of quantum measurement to localize the system in one of the measured eigenstates.

Affiliated with

Also associated with

No associations

Rating

Continuous weak measurement of quantum coherent oscillations 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 Continuous weak measurement of quantum coherent oscillations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous weak measurement of quantum coherent oscillations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-366960