Strongly subradiant states in planar atomic arrays
- URL: http://arxiv.org/abs/2310.06791v1
- Date: Tue, 10 Oct 2023 17:06:19 GMT
- Title: Strongly subradiant states in planar atomic arrays
- Authors: Ilya Volkov, Nikita Ustimenko, Danil Kornovan, Roman Savelev,
Alexandra Sheremet and Mihail Petrov
- Abstract summary: We study collective dipolar oscillations in finite planar arrays of quantum emitters in free space.
We show that the external coupling between the collective states associated with the symmetry of the array and with the quasi-flat dispersion of the corresponding infinite lattice plays a crucial role in the boost of their radiative lifetime.
- Score: 39.58317527488534
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: The optically trapped ensembles of atoms provide a versatile platform for
storing and coherent manipulation of quantum information. However, efficient
realization of quantum information processing requires long-lived quantum
states protected from the decoherence e.g. via spontaneous emission. Here, we
theoretically study collective dipolar oscillations in finite planar arrays of
quantum emitters in free space and analyze mechanisms that govern the emergence
of strongly subradiant collective states. We demonstrate that the external
coupling between the collective states associated with the symmetry of the
array and with the quasi-flat dispersion of the corresponding infinite lattice
plays a crucial role in the boost of their radiative lifetime. We show that
among different regular arrangements of the atoms the square atomic arrays
support eigenstates with minimal radiative losses that scale with the total
number of atoms $N_{tot}$ as $\propto N_{tot}^{-5}$.
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