Physics – Quantum Physics
Scientific paper
1998-12-07
Phys.Usp.41:923-940,1998
Physics
Quantum Physics
55 pages, latex, 4 figures in EPS
Scientific paper
10.1070/PU1998v041n09ABEH000442
Decoherence of a quantum system (which then starts to display classical features) results from the interaction of the system with the environment, and is well described in the framework of the theory of continuous quantum measurements (CQM). Reviewed are the various approaches to the CQM theory, and the approach based on the effective complex Hamiltonians is discussed in greater detail. The effective complex Hamiltonian is derived from the restricted path integral, which emphasizes the role of information in the dynamics of the system being measured. The complex Hamiltonian is used for analyzing the CQM of energy in a two-level system. Such measurement is demonstrated to be capable of monitoring the quantum transition, and the back effect of monitoring on the probability of transition is analyzed. The realization of this type of measurement by a long series of soft observations of the system is presented.
No associations
LandOfFree
Decoherence and the theory of continuous quantum 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 Decoherence and the theory of continuous quantum measurements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Decoherence and the theory of continuous quantum measurements will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-688078