Atom interferometry in a vertical optical lattice

Fortschritte der Physik

Volumn 52, Issue 11-12, 2004, Pages 1173-1179

  Modugno, G ^a   De Mirandes, E ^a   Ferlaino, F ^a   Ott, H ^a   Roati, G ^a   Inguscio, M ^a  

^a UNIVERSITY OF FLORENCE   (Italy)

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EID: 9544258251     PISSN: 00158208     EISSN: None     Source Type: Journal    
DOI: 10.1002/prop.200410187     Document Type: Conference Paper

References (14)

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10. In an infinite system these states are not square-integrable and are therefore often labeled as quasi stationary states or resonances.
11. This is not strictly true because the lattice height varies across the beam diameter, thus coupling the motion along the lattice with the radial motion.
12. Care has to be taken in calculating the momentum spread of a Fermi gas in the direction of the lattice. Because of the θ-function shaped Fermi distribution the integration over the two radial directions leads to a momentum spread which is effectively smaller than the Fermi momentum.
13. Because a tilted periodic potential does not posses an abolute potential minimum one cannot define a ground state of the system. Consequently a condensate which is loaded into such kind of potential is never in equilibrium and cannot be described with a single stationary wave function. In fact the experimental observation directly proves this non-stationarity.
14. S. Dimopoulos and A.A. Geraci, Phys. Rev. D 68, 124021 (2003).