Dresden 2011 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 61: Quantum Information: Concepts and Methods 4

Q 61.10: Vortrag

Freitag, 18. März 2011, 12:45–13:00, SCH A118

Differencial Magnetometry with Multipartite Singlets — •Iñigo Urizar-Lanz1 and Géza Tóth1,2,31Theoretical Physics, The University of the Basque Country, E-48080 Bilbao, Spain — 2IKERBASQUE, Basque Foundation for Science, E-48011 Bilbao, Spain — 3Research Institute for Solid State Physics and Optics, H-1525 Budapest, Hungary

We present a method for measuring the gradient of a magnetic field using a multi-qubit singlet state taking advantage of the fact that the singlet state is insensitive to homogenous fields. By measuring the time dependence of the variance of the collective angular momentum operators, we obtain the gradient of the magnetic field. We present realistic calculations for singlet states realized in a spin chain or with cold atomic ensembles.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2011 > Dresden