Extending Rotational Coherence of Interacting Polar Molecules in a Spin-Decoupled Magic Trap

Seesselberg, Frauke; Luo, Xin-Yu; Li, Ming; Bause, Roman; Kotochigova, Svetlana; Bloch, Immanuel und Gohle, Christoph (2018): Extending Rotational Coherence of Interacting Polar Molecules in a Spin-Decoupled Magic Trap. In: Physical Review Letters, Bd. 121, Nr. 25, 253401

Abstract

Superpositions of rotational states in polar molecules induce strong, long-range dipolar interactions. Here we extend the rotational coherence by nearly 1 order of magnitude to 8.7(6) ms in a dilute gas of polar (NaK)-Na-23-K-40 molecules in an optical trap. We demonstrate spin-decoupled magic trapping, which cancels first-order and reduces second-order differential light shifts. The latter is achieved with a dc electric field that decouples nuclear spin, rotation, and trapping light field. We observe density-dependent coherence times, which can be explained by dipolar interactions in the bulk gas.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 0031-9007
• Sprache: Englisch