Hannover 2020 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 11: Quantum Optics I
Q 11.1: Talk
Monday, March 9, 2020, 14:00–14:15, f342
Super-resolution imaging of a single atom: the role of orbital angular momentum — •Martin Drechsler1, 2, Sebastian Wolf1, Elias Alstead1, Ferdinand Schmidt-Kaler1, and Christian Schmiegelow2 — 1QUANTUM, Institut für Physik, Johannes Gutenberg-Universität Mainz — 2Departamento de Física, FCEyN, UBA and IFIBA, UBA CONICET
Cold trapped ions are one of the most precise platforms to probe light matter interaction, due to the high level of control and isolation from the environment. Recently, it was shown that by using beams with orbital angular momentum, quadrupole transitions of a single 40Ca+ ion can be excited when placing the ion in places where the light intensity vanishes [1, 2]. In this work, we present a method to take advantage of this effect to perform an analogous of Stimulated Emission Depletion Microscopy (STED) [3] to image the wave function of a single trapped ion.
[1] Schmiegelow, C. T., Schulz, J., Kaufmann, H., Ruster, T., Poschinger, U. G., Schmidt-Kaler, F. (2016). Transfer of optical orbital angular momentum to a bound electron. Nature communications, 7, 12998.
[2] Quinteiro, G. F., Schmidt-Kaler, F., Schmiegelow, C. T. (2017). Twisted-light ion interaction: the role of longitudinal fields. Phys. Rev. Lett., 119(25), 253203.
[3] Hell, S. W. (2003). Toward fluorescence nanoscopy. Nature biotechnology, 21(11), 1347.