Coherence of Symmetry-Protected Rotational Qubits in Cold Polyatomic Molecules

Maximilian Löw, Martin Ibrügger, Gerhard Rempe +1

Polar polyatomic molecules provide an ideal but largely unexplored platform to encode qubits in rotational states. Here, we trap cold (100-600 mK) formaldehyde (H${}_2$CO) inside an…