Physics – Quantum Physics
Scientific paper
2003-05-22
Advances in Atomic, Molecular, and Optical Physics Vol. 49, Academic Press, 2003, 295-376
Physics
Quantum Physics
Review Article. 69 pages. Submitted to "Advances in Atomic, Molecular, and Optical Physics" on 25 November 2002. Replaced with
Scientific paper
Experiments with individual trapped ions are ideally suited to investigate fundamental issues of quantum mechanics such as the measurement process. At the same time electrodynamically trapped ions have been used with great success to demonstrate quantum logic operations and are a candidate for scalable quantum computing. In this article a brief introduction is given to the basic steps that constitute a quantum measurement; in particular, measurements on single quantum systems are considered. Then experiments with single Yb+ are reviewed demonstrating the quantum Zeno paradox, as well as an experiment where an adaptive algorithm for quantum state estimation of qubits was implemented. In the last section of this article -- devoted to experiments and new ideas related to quantum information processing (QIP) with trapped ions -- the realization of various quantum channels using a hyperfine qubit of Yb+ is briefly discussed. Then a concept for QIP with trapped ions is reviewed where rf or microwave radiation is used instead of laser light for coherent manipulation of a collection of ions. In a suitably modified trap the ions form an artificial ion "molecule" to which the techniques developed in nuclear magnetic resonance and electron spin resonance experiments can be directly applied. Finally, coherent excitation of optical electric quadrupole transitions in Yb+ and Ba+ is reported. In addition, robust Raman cooling of a pair of Ba+ ions is reviewed.
Balzer Christoph
Wunderlich Christof
No associations
LandOfFree
Quantum measurements and new concepts for experiments with trapped ions 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 Quantum measurements and new concepts for experiments with trapped ions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum measurements and new concepts for experiments with trapped ions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-41426