Microwave coherent control of ultracold ground-state molecules formed by short-range photoassociation

Abstract

We report the observation of microwave coherent control of rotational states of ultracold ${}^{85}$Rb${}^{133}$Cs molecules formed in their vibronic ground state by short-range photoassociation. Molecules are formed in the single rotational state $X(v=0,J=1)$ by exciting pairs of atoms to the short-range state $(2{)}^3{\Pi }_{0^{-}}(v=11,J=0)$, followed by spontaneous decay. We use depletion spectroscopy to record the dynamic evolution of the population distribution and observe clear Rabi oscillations while irradiating on a microwave transition between coupled neighbouring rotational levels. A density-matrix formalism that accounts for longitudinal and transverse decay times reproduces both the dynamic evolution during the coherent process and the equilibrium population. The coherent control reported here is valuable both for investigating coherent quantum effects and for applications of cold polar molecules produced by continuous short-range photoassociation.

arXiv comment5 pages, 4 figures

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Cited by in corpus (5)

• Quantum control of molecules for fundamental physics
• Coherent Manipulation of the Internal State of Ultracold ${}^{87}$Rb${}^{133}$Cs Molecules with Multiple Microwave Fields
• An approximation scheme and non-Hermitian re-normalization for description of atom-field system evolution
• Microwave-assisted coherent control of ultracold polar molecules with a ladder-type rotational states
• Scalable platform for qudit-based quantum computing using polar molecules