SAMOP 2023 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 35: Quantum Optics: Cavity and Waveguide QED II
Q 35.2: Talk
Wednesday, March 8, 2023, 14:45–15:00, E001
Applications of cooperative subwavelength quantum emitter arrays — •Nico Baßler1,2, Michael Reitz1, Kai Phillip Schmidt2, and Claudiu Genes1,2 — 1Max Planck Institute for the Science of Light, Erlangen, Germany — 2Friedrich Alexander University, Erlangen, Germany
Abstract: We describe applications of subwavelength quantum emitter arrays as optical elements and in the context of chiral hybrid cavity design. A single two-dimensional array can act as an optical atom-thick metasurface with a narrow reflectivity window [1]. For normal illumination, the cooperative optical response, stemming from emitter-emitter dipole exchanges, can be augmented via externally tunable magnetic fields to control the state of polarization in transmission [2]. This is particularly interesting for the case of circularly polarized light, where the array can act as a chiral mirror, thus allowing the design of strongly frequency dependent, hybrid [3], chiral cavities. We then consider the application of such chiral cavities to the sensitive detection of chirality in enantiomers.
[1] J. Rui, D. Wei, A. Rubio-Abadal, S. Hollerith, J. Zeiher, D. M. Stamper-Kurn, C. Gross, and I. Bloch, *A subradiant optical mirror formed by a single structured atomic layer,* Nature 583, 369 (2020). [2] N. S. Bassler, M. Reitz, K. P. Schmidt, C. Genes, Linear optical elements based on cooperative subwavelength emitter arrays, arXiv:2209.03204 (2022). [3] O. Cernotik, A. Dantan and C. Genes, Cavity quantum electrodynamics with frequency-dependent reflectors, Phys. Rev. Lett. 122, 243601 (2019).