Matter-wave Fourier optics with a strongly interacting two-dimensional Fermi gas

• Verfasst von: Murthy, Puneet A. [VerfasserIn]
• Verfasst von: Kedar, Dhruv [VerfasserIn]
• Verfasst von: Lompe, Thomas [VerfasserIn]
• Verfasst von: Neidig, Mathias [VerfasserIn]
• Verfasst von: Ries, Martin Gerhard [VerfasserIn]
• Verfasst von: Wenz, André Niklas [VerfasserIn]
• Verfasst von: Zürn, Gerhard [VerfasserIn]
• Verfasst von: Jochim, Selim [VerfasserIn]
• Titel: Matter-wave Fourier optics with a strongly interacting two-dimensional Fermi gas
• Verf.angabe: P.A. Murthy, D. Kedar, T. Lompe, M. Neidig, M.G. Ries, A.N. Wenz, G. Zürn, and S. Jochim
• E-Jahr: 2014
• Jahr: 10 October 2014
• Fussnoten: Gesehen am 13.07.2020
• Titel Quelle: Enthalten in: Physical review / A
• Ort Quelle: College Park, Md., 1970
• Jahr Quelle: 2014
• Band/Heft Quelle: 90(2014,4) Artikel-Nummer 043611, 6 Seiten
• ISSN Quelle: 1094-1622
• DOI: doi:10.1103/PhysRevA.90.043611
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1724492020

Abstract

We demonstrate and characterize an experimental technique to directly image the momentum distribution of a strongly interacting two-dimensional quantum gas with high momentum resolution. We apply the principles of Fourier optics to investigate three main operations on the expanding gas: focusing, collimation, and magnification. We focus the gas in the radial plane using a harmonic confining potential and thus gain access to the momentum distribution. We pulse a different harmonic potential to stop the rapid axial expansion, which allows us to image the momentum distribution with high resolution. Additionally, we propose a method to magnify the mapped momentum distribution to access interesting momentum scales. All these techniques can be applied to a wide range of experiments, and in particular to study many-body phases of quantum gases.