Matter-wave Fourier optics with a strongly interacting two-dimensional Fermi gas
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, co...
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| Main Authors: | , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
10 October 2014
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| In: |
Physical review. A, Atomic, molecular, and optical physics
Year: 2014, Volume: 90, Issue: 4 |
| ISSN: | 1094-1622 |
| DOI: | 10.1103/PhysRevA.90.043611 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevA.90.043611 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.90.043611 
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| Author Notes: | P.A. Murthy, D. Kedar, T. Lompe, M. Neidig, M.G. Ries, A.N. Wenz, G. Zürn, and S. Jochim |
| Summary: | 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. |
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| Item Description: | Gesehen am 13.07.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1094-1622 |
| DOI: | 10.1103/PhysRevA.90.043611 |