Quantum Metrology: Detection of weak forces using Schrodinger Cat resources
Quantum Physics
2007-05-23 v1
Abstract
We investigate the utility of non classical states of simple harmonic oscillators (a superposition of coherent states) for sensitive force detection. We find that like squeezed states a superposition of coherent states allows the detection of displacement measurements at the Heisenberg limit. Entangling many superpositions of coherent states offers a significant advantage over a single mode superposition states with the same mean photon number.
Cite
@article{arxiv.quant-ph/0312063,
title = {Quantum Metrology: Detection of weak forces using Schrodinger Cat resources},
author = {Kae Nemoto and W. J. Munro and G. J. Milburn and S. L. Braunstein},
journal= {arXiv preprint arXiv:quant-ph/0312063},
year = {2007}
}
Comments
Proceedings of the Sixth International Conference on Quantum Communication, Measurement and Computing, pg 333, ed by J H Shapiro and O Hirota, Rinton Press (2003)