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

2012
ISBN: 978-3-642-43245-3
Verlag: Springer

Buch, Englisch, 116 Seiten, Paperback, Format (B × H): 155 mm x 235 mm, Gewicht: 207 g

Reihe: Springer Theses

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.

Zielgruppe

Research

Autoren/Hrsg.

Groß, Christian

Fachgebiete

• Naturwissenschaften Physik Quantenphysik Atom- und Molekülphysik
• Naturwissenschaften Physik Physik Allgemein Experimentalphysik
• Naturwissenschaften Physik Thermodynamik Physik unter extremen Bedingungen (Vakuum, Hohe Drücke)

Inhaltsverzeichnis

Introduction.- Spin Squeezing, Entanglement and Quantum Metrology.- Squeezing Two Mean Field Modes of a Bose-Einstein Condensate.- Non-linear Interferometry Beyond the Standard Quantum Limit.- Outlook. - Appendices.