External field control of spin-dependent rotational decoherence of ultracold polar molecules

Abstract

We determine trapping conditions for ultracold polar molecules, where pairs of internal states experience identical trapping potentials. Such conditions could ensure that detrimental effects of inevitable inhomogeneities across an ultracold sample are significantly reduced. In particular, we investigate the internal rovibronic and hyperfine quantum states of ultracold fermionic ground-state ${}^{40}$K${}^{87}$Rb polar molecules, when static magnetic, static electric, and trapping laser fields are simultaneously applied. Understanding the effect of changing the relative orientation or polarization of these three fields is of crucial importance for creation of decoherence-free subspaces built from two or more rovibronic states. Moreover, we evaluate the induced dipole moment of the molecule in the presence of these fields, which will allow control of interactions between molecules in different sites of an optical lattice and study the influence of the interaction anisotropy on the ability to entangle polar molecules.

References in corpus (11)

• A High Phase-Space-Density Gas of Polar Molecules
• Quantum State Engineering and Precision Metrology using State-Insensitive Light Traps
• Quantum Gas of Deeply Bound Ground State Molecules
• Precision Test of Mass Ratio Variations with Lattice-Confined Ultracold Molecules
• Long-lived dipolar molecules and Feshbach molecules in a 3D optical lattice
• The hyperfine energy levels of alkali metal dimers: ground-state polar molecules in electric and magnetic fields
• The coupling of the X${}^1{\Sigma }^{+}$ and a${}^3{\Sigma }^{+}$ states of KRb
• Anisotropic Polarizability of Ultracold Polar ${}^{40}$K${}^{87}$Rb Molecules
• Making the best of mixed-field orientation of polar molecules: A recipe for achieving adiabatic dynamics in an electrostatic field combined with laser pulses
• Experimental observation of magic-wavelength behavior in optical lattice-trapped ${}^{87}$Rb
• Electric field-dependent dynamic polarizability and "magic" conditions for optical trapping of polar molecules

Cited by in corpus (5)

• Manipulation of Molecules with Electromagnetic Fields
• Tune-out and magic wavelengths for ground-state ${}^{23}$Na${}^{40}$K molecules
• Magic Conditions for Multiple Rotational States of Bialkali Molecules in Optical Lattices
• Nondestructive dispersive imaging of rotationally excited ultracold molecules
• Pendular trapping conditions for ultracold polar molecules enforced by external electric fields