Information and noise in quantum measurement

Details Information and noise in quantum measurement Information and noise in quantum measurement

1999-07-06

arxiv.org/abs/quant-ph/9907018v4

Phys.Rev.A62:022103,2000

Physics

Quantum Physics

16 pages, short comment added in II.B., final version for publication in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.62.022103

Even though measurement results obtained in the real world are generally both noisy and continuous, quantum measurement theory tends to emphasize the ideal limit of perfect precision and quantized measurement results. In this article, a more general concept of noisy measurements is applied to investigate the role of quantum noise in the measurement process. In particular, it is shown that the effects of quantum noise can be separated from the effects of information obtained in the measurement. However, quantum noise is required to ``cover up'' negative probabilities arising as the quantum limit is approached. These negative probabilities represent fundamental quantum mechanical correlations between the measured variable and the variables affected by quantum noise.

Affiliated with

Also associated with

No associations

Rating

Information and noise in quantum measurement 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 Information and noise in quantum measurement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Information and noise in quantum measurement will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-604796