We have performed time-domain interferometry experiments with matter waves trapped in a harmonic potential above and below the Bose-Einstein phase transition, by means of the method of separated oscillating fields, with a variable time delay T. We observe the oscillations of the population between two internal Zeeman states versus the delay T to be rapidly depleted both below and slightly above Bose-Einstein condensation. We give a quantitative explanation in terms of the phase evolution due to the entanglement between the internal and external degrees of freedom.
Time-domain atom interferometry across the threshold for Bose-Einstein condensation / Minardi F.; Fort C.; Maddaloni P.; Modugno M.; Inguscio M.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 87:17(2001), pp. 1704011-1704014. [10.1103/PhysRevLett.87.170401]
Time-domain atom interferometry across the threshold for Bose-Einstein condensation
Minardi F.;
2001
Abstract
We have performed time-domain interferometry experiments with matter waves trapped in a harmonic potential above and below the Bose-Einstein phase transition, by means of the method of separated oscillating fields, with a variable time delay T. We observe the oscillations of the population between two internal Zeeman states versus the delay T to be rapidly depleted both below and slightly above Bose-Einstein condensation. We give a quantitative explanation in terms of the phase evolution due to the entanglement between the internal and external degrees of freedom.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.