Information, fidelity, and reversibility in photodetection processes

Details Information, fidelity, and reversibility in photodetection processes Information, fidelity, and reversibility in photodetection processes

2010-10-25

arxiv.org/abs/1010.5075v2

Phys.Rev. A83 (2011) 032111

Physics

Quantum Physics

34 pages, 8 figures

Scientific paper

10.1103/PhysRevA.83.032111

Four types of photon counters are discussed in terms of information, fidelity, and physical reversibility: conventional photon counter, quantum counter, and their quantum nondemolition (QND) versions. It is shown that when a photon field to be measured is in an arbitrary superposition of vacuum and one-photon states, the quantum counter is the most reversible, the QND version of conventional photon counter provides the most information, and the QND version of quantum counter causes the smallest state change. Our results suggest that the physical reversibility of a counter tends to decrease the amount of information obtained by the counter.

Affiliated with

Also associated with

No associations

Rating

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

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-93770