Direct observation of time-dependent coherent chiral tunneling dynamics
arXiv:2412.06682 · doi:10.1103/PhysRevLett.134.123403
Abstract
Superpositions of handed molecular states give rise to achiral eigenstates, delocalized across a double-well potential via tunneling. A coherent superposition of these energy eigenstates could dynamically relocalize the molecules into chiral states, which has only been addressed theoretically. Here, we present a microwave six-wave mixing pump-probe study to create and probe coherent chiral tunneling dynamics in a rotational state. Through a time-resolved scheme, we uncover the periodic time evolution of the induced chiral wavepacket under field-free conditions. Moreover, we demonstrate precise phase control of this coherence via phase modulation during pump excitation.
14 pages, 4 figures in the main text and 27 pages, 12 figures, and 4 tables in the Supplementary Material