Conditions for formation and trapping of the two-ion Coulomb cluster in the dissipative optical superlattice
Krasnov I. V.†
       
Schematic picture of the OSL action on tripod-type particles. | a 〉 and | bj 〉 ( j ∈ { x , y , z }) are the internal ionic states in the representation, in which the matrix elements of the dipole moments 〈 bj | d̂ | a 〉 are directed along the Cartesian axes (See Eq. ( 12 )); Δ sj ( r i ) and Δ s( r ) are the light shifts of the states | bj 〉 and | a 〉, ( ji ) ∈ {( xy ),( yz ),( zx )}; R j ( r i ) are the rates of incoherent transitions | bj 〉 → | a 〉. The spatial frequencies Ω i , of the oscillations of Δ sj ( r i ) and R j ( r i ) are close to each other. As a result, deep potential wells along the x , y , z axes appear (see the inset), which have the periods and the depths Δ W i ∼ ħ Δ sj L i / λ ≫ ħ Δ sj .