Title | Pendular trapping conditions for ultracold polar molecules enforced by external electric fields |

Publication Type | Journal Article |

Year of Publication | 2017 |

Authors | Li, M, Petrov, A, Makrides, C, Tiesinga, E, Kotochigova, S |

Journal | Physical Review A |

Volume | 95 |

Issue | 6 |

Pages | 063422 |

Date Published | 2017/06/26 |

Abstract | 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 23Na40K 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 23Na40K molecules where decoherences due laser-intensity fluctuations and 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. |

URL | https://arxiv.org/abs/1703.03839 |

DOI | 10.1103/PhysRevA.95.063422 |