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Pendular trapping conditions for ultracold polar molecules enforced by external electric fields
Li, M Petrov, A Makrides, C Tiesinga, E Kotochigova, S
Li, M
Petrov, A
Makrides, C
Tiesinga, E
Kotochigova, S
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Pre-print
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2017-06-26
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10.1103/PhysRevA.95.063422
Abstract
© 2017 American Physical Society. We theoretically investigate trapping conditions for ultracold polar molecules in optical lattices when external magnetic and electric fields are simultaneously applied. Our results are based on an accurate electronic-structure calculation of the polar Na23K40 polar molecule in its absolute ground state combined with a calculation of its rovibrational-hyperfine motion. We find that an electric field strength of 5.26(15) kV/cm and an angle of 54.7 between this field and the polarization of the optical laser lead to a trapping design for Na23K40 molecules where decoherence due to electric field strength and laser-intensity fluctuations, as well as fluctuations in the direction of its polarization, are kept to a minimum. One-standard-deviation systematic and statistical uncertainties are given in parenthesis. Under such conditions, pairs of hyperfine-rotational states of v=0 molecules, used to induce tunable dipole-dipole interactions between them, experience ultrastable, matching trapping forces.
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Physical Review A
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