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Probing ultra-cold Fermi atoms with a single ion
- Source :
- Phys. Rev. A 79, 023604 (2009)
- Publication Year :
- 2008
-
Abstract
- We show that the recently proposed ionic microscope set-up [Kollath et.al, PRA, \textbf{76}, 063602 (2007)] could be adapted to measure the \textit {local single-particle energy distribution} of a degenerate Fermi gas \textit{in situ} with the resolution on the nanometer scale. We study an ion held in a Paul trap in an atomic Fermi gas and compute the two-photon Raman photo-association rate of the ion and an atom. We show that, as a function of the detunings between the frequencies of the two incident lasers and energies in the atom-ion system, the photo-association rate directly measures the single-particle energy distribution in the Fermi gas around the ion. We describe an experiment to measure the photo-association rate of a trapped ion and argue that, as the position of the ion can be scanned through the Fermi gas, this experiment directly probes the local energy and spin-state distribution of the Fermi gas.<br />Comment: 5 pages, 2 figures
- Subjects :
- Condensed Matter - Strongly Correlated Electrons
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. A 79, 023604 (2009)
- Publication Type :
- Report
- Accession number :
- edsarx.0802.3158
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevA.79.023604