Limits to phase resolution in matter-wave interferometry
2004 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 70, no 6, 063612Article in journal (Refereed) Published
We study the quantum dynamics of a two-mode Bose-Einstein condensate in a time-dependent symmetric double-well potential using analytical and numerical methods. The effects of internal degrees of freedom on the visibility of interference fringes during a stage of ballistic expansion are investigated varying particle number, nonlinear interaction sign and strength, as well as tunneling coupling. Expressions for the phase resolution are derived and the possible enhancement due to squeezing is discussed. In particular, the role of the superfluid-Mott insulator crossover and its analog for attractive interactions is recognized.
Place, publisher, year, edition, pages
2004. Vol. 70, no 6, 063612
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:du-11212DOI: 10.1103/PhysRevA.70.063612ISI: 000226418900110OAI: oai:DiVA.org:du-11212DiVA: diva2:565611