Long Rotational Coherence Times of Molecules in a Magnetic Trap
| Autor: | M. R. Tarbutt, L. Caldwell, H. J. Williams, Noah Fitch, Jesus Aldegunde, Ben Sauer, Jeremy M. Hutson |
|---|---|
| Přispěvatelé: | Engineering & Physical Science Research Council (E, Engineering and Physical Sciences Research Council |
| Rok vydání: | 2019 |
| Předmět: |
Physics
Coherence time General Physics 02 Physical Sciences Atomic Physics (physics.atom-ph) Chemical polarity General Physics and Astronomy FOS: Physical sciences 01 natural sciences physics.atom-ph Magnetic field Physics - Atomic Physics Dipole Magnetic trap 0103 physical sciences Molecule Atomic physics 010306 general physics Coherence (physics) |
| Zdroj: | Physical Review Letters, 2020, Vol.124(6), pp.063001 [Peer Reviewed Journal] |
| ISSN: | 1079-7114 |
| Popis: | Polar molecules in superpositions of rotational states exhibit long-range dipolar interactions, but maintaining their coherence in a trapped sample is a challenge. We present calculations that show many laser-coolable molecules have convenient rotational transitions that are exceptionally insensitive to magnetic fields. We verify this experimentally for CaF where we find a transition with sensitivity below $5\text{ }\text{ }\mathrm{Hz}\text{ }{\mathrm{G}}^{\ensuremath{-}1}$ and use it to demonstrate a rotational coherence time of 6.4(8) ms in a magnetic trap. Simulations suggest it is feasible to extend this to more than 1 s using a smaller cloud in a biased magnetic trap. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|