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Q: Fachverband Quantenoptik und Photonik
Q 36: Ultracold Molecules
Q 36.6: Talk
Tuesday, March 6, 2018, 15:15–15:30, K 2.013
Ferroelectric nano-traps for polar molecules — Omjyoti Dutta1 and •Geza Giedke1,2 — 1Donostia International Physics Center (DIPC), Donostia-San Sebastian, Spain — 2Ikerbasque Foundation, Bilbao, Spain
We propose and analyze an electrostatic-optical nanoscale trap for cold diatomic polar molecules. The main ingredient of our proposal is an square-array of ferroelectric nanorods with alternating polarization. We show that, in contrast to electrostatic traps using the linear Stark effect, a quadratic Stark potential supports long-lived trapped states. The molecules are kept at a fixed height from the nanorods by a standing-wave optical dipole trap. For the molecules and materials considered, we find nanotraps with trap frequency up to 1MHz, ground-state width on the order of 20nm. Analyzing the loss mechanisms due to non-adiabaticity, surface-induced radiative transitions, and laser-induced transitions, we show the existence of trapped states with life-time on the order of 1s, competitive with current traps created via optical mechanisms. As an application we extend our discussion to an 1D array of nanotraps to simulate a long-range spin Hamiltonian in our structure.