Superfluid rotation sensor with helical laser trap

The macroscopic quantum states of cold atomic ensemble\footnote{F. Dalfovo et al. Rev.Mod.Phys., \textbf{71}, 463 (1999).} in helical laser trap\footnote{A.Yu.Okulov. J. Phys. B , \textbf{41}, 101001 (2008).} are considered in the framework of the Gross-Pitaevskii equation. The helical interference pattern is composed of the two counter propagating Laguerre-Gaussian optical vortices with opposite orbital angular momenta and they are driven in rotation via angular Doppler effect.\footnote{A.Yu.Okulov. J. Opt. Soc. Am. B, \textbf{29}, in press (2012).} The macroscopic observables including linear momentum and angular momentum are evaluated explicitly.\footnote{A.Yu.Okulov. Phys.Lett.A, \textbf{376}, 650-655 (2012).}