Spin Squeezing and Non-linear Atom Interferometry with Bose-Einstein Condensates

Front Cover
Springer Science & Business Media, Jan 13, 2012 - Science - 116 pages
Interferometry, the most precise measurement technique known today, exploits the wave-like nature of the atoms or photons in the interferometer. As expected from the laws of quantum mechanics, the granular, particle-like features of the individually independent atoms or photons are responsible for the precision limit, the shot noise limit. However this “classical” bound is not fundamental and it is the aim of quantum metrology to overcome it by employing entanglement among the particles. This work reports on the realization of spin-squeezed states suitable for atom interferometry. Spin squeezing was generated on the basis of motional and spin degrees of freedom, whereby the latter allowed the implementation of a full interferometer with quantum-enhanced precision.
 

What people are saying - Write a review

We haven't found any reviews in the usual places.

Contents

1 Introduction
1
2 Spin Squeezing Entanglement and Quantum Metrology
5
3 Squeezing Two Mean Field Modes of a BoseEinstein Condensate
24
4 Nonlinear Interferometry Beyond the Standard Quantum Limit
59
5 Outlook
93
Appendix A Precision Absorption Imaging of Ultracold Atoms
95
Appendix B Particle Loss and Number Squeezing
107
Appendix C Active Stabilization of Magnetic FieldsBelow the Milligauss Level
110
Copyright

Other editions - View all

Common terms and phrases

Bibliographic information