94 research outputs found
Spin Squeezing by Rydberg Dressing in an Array of Atomic Ensembles
We report on the creation of an array of spin-squeezed ensembles of cesium
atoms via Rydberg dressing, a technique that offers optical control over local
interactions between neutral atoms. We optimize the coherence of the
interactions by a stroboscopic dressing sequence that suppresses
super-Poissonian loss. We thereby prepare squeezed states of atoms with
a metrological squeezing parameter quantifying the reduction
in phase variance below the standard quantum limit. We realize metrological
gain across three spatially separated ensembles in parallel, with the strength
of squeezing controlled by the local intensity of the dressing light. Our
method can be applied to enhance the precision of tests of fundamental physics
based on arrays of atomic clocks and to enable quantum-enhanced imaging of
electromagnetic fields.Comment: 18 pages, 11 figures, typos corrected, edits for clarit
Chemistry and the Science of Transformation in Mary Shelley’s Frankenstein
This essay reads the novel in a new way, examining the way that Victor Frankenstein's chemical education (he does not train to be a doctor!) enables his creation of the monster. It reveals that chemists of the period had a different worldview to others where they saw the world in constant transformation and flux. I have written this essay co-written the introduction to the special issue, and co-edited the whole
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