Second-scale nuclear spin coherence time of ultracold 23Na40K molecules

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Science  28 Jul 2017:
Vol. 357, Issue 6349, pp. 372-375
DOI: 10.1126/science.aal5066

Extending the coherence time of molecules

Quantum properties of atoms and molecules can be exploited for precision measurements or quantum information processing. The complex state structure of molecules can be exploited, but it is hard to preserve the coherence between pairs of those states in applications. Park et al. created fermionic molecules of NaK in the rovibrational ground state that maintained coherence between their nuclear spin states on a time scale of 1 second. This long coherence time makes dipolar ultracold molecules a valuable quantum resource.

Science, this issue p. 372

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