Rydberg blockade at very-high- n , n ∼ 300, is examined using strontium n 1 F 3 Rydberg atoms excited in a small volume defined by two crossed tightly-focused laser beams. Strong but not complete blockade is observed and discussed with the aid of quantum calculations using a two-active-electron model. Nonetheless, the probability for creating one, and only one, Rydberg atom is large, >0.6, sufficient to enable study of strongly- coupled Rydberg atom pairs.

Journal of Physics Conference SeriesSep 7, 20150 citations

Bulletin of the American Physical Society

Blockade involving high- $n$ , $n\sim300$ , strontium Rydberg atomsBlockade involving high-$n$, $n\sim300$, strontium Rydberg atoms

S. Yoshida, Joachim Burgd orfer, Xinyue Zhang, F. B. Dunning

Published May 25, 2016• 0 citations

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Blockade involving high-

n

n\sim300

, strontium Rydberg atoms

Observation of Rydberg blockade effects at very high

n

n\sim300

, using strontium

n

$ ^{1}F_{3}$ states

Engineering long-range interactions between high-

n

, $n \ge $ 300, strontium Rydberg atoms in a beam

Rydberg blockade at $n\ensuremath{\sim}300$, is examined using strontium

n\phantom{\rule{0.16em}{0ex}}^{1}F_{3}

Rydberg atoms excited in an atomic beam in a small volume defined by two tightly focused crossed laser beams. The observation of blockade for such states is challenging due to their extreme sensitivity to stray fields and the many magnetic sublevels associated with

F

states which results in a high local density of states. Nonetheless, with a careful choice of laser polarization to selectively excite only a limited number of these sublevels, sizable blockade effects are observed on an $\ensuremath{\sim}0.1$ mm length scale extending blockade measurements into the near-macroscopic regime and enabling study of the dynamics of strongly coupled many-body high-

n

Rydberg systems under carefully controlled conditions.