Creation of a low-entropy quantum gas of polar molecules in an optical lattice

Steven A. Moses, Jacob P. Covey, Matthew T. Miecnikowski, Bo Yan, Bryce Gadway, Jun Ye, Deborah S. Jin

Research output: Contribution to journalArticlepeer-review


Ultracold polar molecules, with their long-range electric dipolar interactions, offer a unique platform for studying correlated quantum many-body phenomena. However, realizing a highly degenerate quantum gas of molecules with a low entropy per particle is challenging. We report the synthesis of a low-entropy quantum gas of potassiumrubidium molecules (KRb) in a three-dimensional optical lattice. We simultaneously load into the optical lattice a Mott insulator of bosonic Rb atoms and a single-band insulator of fermionic K atoms. Then, using magnetoassociation and optical state transfer, we efficiently produce ground-state molecules in the lattice at those sites that contain one Rb and one K atom. The achieved filling fraction of 25% should enable future studies of transport and entanglement propagation in a many-body system with long-range dipolar interactions.

Original languageEnglish (US)
Pages (from-to)659-662
Number of pages4
Issue number6261
StatePublished - Nov 6 2015

ASJC Scopus subject areas

  • General


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