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Extending Rotational Coherence of Interacting Polar Molecules in a Spin-Decoupled Magic Trap
Seeßelberg, F Luo, XY Li, M Bause, R Kotochigova, S Bloch, I Gohle, C
Seeßelberg, F
Luo, XY
Li, M
Bause, R
Kotochigova, S
Bloch, I
Gohle, C
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2018-12-19
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10.1103/PhysRevLett.121.253401
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© 2018 American Physical Society. Superpositions of rotational states in polar molecules induce strong, long-range dipolar interactions. Here we extend the rotational coherence by nearly 1 order of magnitude to 8.7(6) ms in a dilute gas of polar Na23K40 molecules in an optical trap. We demonstrate spin-decoupled magic trapping, which cancels first-order and reduces second-order differential light shifts. The latter is achieved with a dc electric field that decouples nuclear spin, rotation, and trapping light field. We observe density-dependent coherence times, which can be explained by dipolar interactions in the bulk gas.
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Physical Review Letters
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