On the Improvement of Frequency Stardards with Quantum Entanglement
Quantum Physics
2009-10-30 v1
Abstract
The optimal precision of frequency measurements in the presence of decoherence is discussed. We analyze different preparations of n two level systems as well as different measurement procedures. We show that standard Ramsey spectroscopy on uncorrelated atoms and optimal measurements on maximally entangled states provide the same resolution. The best resolution is achieved using partially entangled preparations with a high degree of symmetry.
Keywords
Cite
@article{arxiv.quant-ph/9707014,
title = {On the Improvement of Frequency Stardards with Quantum Entanglement},
author = {S. F Huelga and C. Macchiavello and T. Pellizzari and A. K. Ekert and M. B. Plenio and J. I. Cirac},
journal= {arXiv preprint arXiv:quant-ph/9707014},
year = {2009}
}
Comments
4 pages, 4 figures