| Zugriffsnummer | 49740 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Probing the degree of coherence through the full 1D to 3D crossover |
| Autor(in); Institution |
Shah, R.; Department of Physics and Astronomy, University of Sussex, Brighton, UNITED KINGDOM
Barrett, T.J.; Department of Physics and Astronomy, University of Sussex, Brighton, UNITED KINGDOM
Colcelli, A.; SISSA and INFN, Sezione di Trieste, Trieste, ITALY
Orucevic, F.; Department of Physics and Astronomy, University of Sussex, Brighton, UNITED KINGDOM
Trombettoni, A.; SISSA and INFN, Sezione di Trieste, Trieste, ITALY; Department of Physics, University of Trieste, Trieste, ITALY
|
| Quelle/Jahr | Physical Review Letters: 130 (2023), 12, 1 - 7 |
| Artikelnummer | 123401 |
| ISSN | 0031-9007 (print) ; 1079-7114 (online) |
| DOI | |
| Verlag | College Park, Md: APS |
| Zusammenfassung | We experimentally study a gas of quantum degenerate 87Rb atoms throughout the full dimensional crossover, from a one- dimensional (1D) system exhibiting phase fluctuations consistent with 1D theory to a three-dimensional (3D) phase-coherent system, thereby smoothly interpolating between these distinct, well-understood regimes. Using a hybrid trapping architecture combining an atom chip with a printed circuit board, we continuously adjust the system’s dimensionality over a wide range while measuring the phase fluctuations through the power spectrum of density ripples in time-of-flight expansion. Our measurements confirm that the chemical potential μ controls the departure of the system from 3D and that the fluctuations are dependent on both μ and the temperature T. Through a rigorous study we quantitatively observe how inside the crossover the dependence on T gradually disappears as the system becomes 3D. Throughout the entire crossover the fluctuations are shown to be determined by the relative occupation of 1D axial collective excitations. |
| Themenbereich der Metrologie | Metrologie in der Medizin |