Diatomic molecules in optical and microwave dipole traps

Abstract

The dipole forces on rotating diatomic molecules are worked out in detail for optical as well as microwave radiation fields. The objective is in particular to investigate how the dipole forces and potentials depend on the subtle internal structure of the molecule, with special emphasis on hyperfine and Zeeman states. Dipole potentials are obtained from computations of the real part of the complex molecular polarizability, whereas the imaginary part yields the scattering force. Numerical examples are presented for 23 Na 2 and OH for optical (laser) fields related to strong electronic transitions and for microwave fields for the doubling in the OH ground state.

Calculation of scattering parameters for ultracold 6 Li— 7 Li elastic collisions

“…Shape resonance due to angular momentum barriers occurs and further experimental studies of ultracold collisions will help us to test those resonances. In the cold atom experiment the scattering length in the hyperfine state and its dependence on the magnetic field [18] are important quantities, So we shall investigate those problems in the future work.…”

Quantum optimal control theory applied to transitions in diatomic molecules

“…(18) and (21), it now follows that |* (r + At)) +idE{t)M]e-iA^\V{t)). (24) In practice, the vector 1^(1 + At)) is obtained by repeated multiplications IT']? + At)) = A|T'(f)).…”

An atom–molecule platform for quantum computing

“…Polar molecules can be easily controlled by DC electric and magnetic fields, as well as by microwave and optical fields allowing to design various traps [13]. The main appeal of polar molecules, however, comes from their permanent electric dipole moment, allowing them to interact via a long-range dipole-dipole interaction, and offering a tool to implement two-qubit gates.…”