Near-optimal two-mode spin squeezing via feedback
Quantum Physics
2007-05-23 v3
Abstract
We propose a feedback scheme for the production of two-mode spin squeezing. We determine a general expression for the optimal feedback, which is also applicable to the case of single-mode spin squeezing. The two-mode spin squeezed states obtained via this feedback are optimal for j=1/2 and are very close to optimal for j>1/2. In addition, the master equation suggests a Hamiltonian that would produce two-mode spin squeezing without feedback, and is analogous to the two-axis countertwisting Hamiltonian in the single mode case.
Keywords
Cite
@article{arxiv.quant-ph/0203081,
title = {Near-optimal two-mode spin squeezing via feedback},
author = {Dominic W. Berry and Barry C. Sanders},
journal= {arXiv preprint arXiv:quant-ph/0203081},
year = {2007}
}
Comments
10 pages, 6 figures, journal version