  Helical waveguide filled by superfluid is shown to transform rotations of the
reference frame $\vec \Omega_{\oplus}$ into linear displacements of the atomic
ensemble and vise versa the linear displacements of the reference frame $\vec
V$ initialize rotations $\vec \Omega_{\oplus}$ of ensemble. In the mean-field
Gross-Pitaevskii equation with a weakly modulated gravitation potential the
exact solutions for macroscopic wavefunction $\Psi$ demonstrate the emergence
of $redshift$ phase factor. For helical waveguides formed by phase-conjugated
optical vortices with high angular momentum $L_z=\pm \ell \hbar \sim \pm \hbar
\cdot 10^{3 \div 4}$ one may expect the significant improvement of the
phase-sensitivity $\delta \phi$ by factor containing $2 \ell$ compared to the
conventional nonsingular matter-wave interferometry.
