231 citations · 470 across the 12 of their papers we have counts for
12 papers
Negative refraction of light in an atomic medium
L. Ruks, K. E. Ballantine, J. Ruostekoski
The quest to manipulate light propagation in ways not possible with natural media has driven the development of artificially structured metamaterials. One of the most striking effe…
Spontaneous symmetry breaking in frustrated triangular atom arrays due to cooperative light scattering
C. D. Parmee, K. E. Ballantine, J. Ruostekoski
We demonstrate the presence of an optical phase transition with frustration-induced spontaneous symmetry breaking in a triangular planar atomic array due to cooperative light-media…
Optical magnetism and wavefront control by arrays of strontium atoms
K. E. Ballantine, D. Wilkowski, J. Ruostekoski
By analyzing the parameters of electronic transitions, we show how bosonic Sr atoms in planar optical lattices can be engineered to exhibit optical magnetism and other higher-order…
Cooperative optical wavefront engineering with atomic arrays
Kyle E. Ballantine, Janne Ruostekoski
Natural materials typically interact weakly with the magnetic component of light which greatly limits their applications. This has led to the development of artificial metamaterial…
Unidirectional absorption, storage, and emission of single photons in a collectively responding bilayer atomic array
K. E. Ballantine, J. Ruostekoski
Two-dimensional regular arrays of atoms are a promising platform for quantum networks, with collective subradiant states providing long-lived storage and collimated emission allowi…
Quantum single-photon control, storage, and entanglement generation with planar atomic arrays
K. E. Ballantine, J. Ruostekoski
While artificially fabricated patterned metasurfaces are providing paradigm-shifting optical components for classical light manipulation, strongly interacting, controllable, and de…