Berlin 2024 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 45: Materials and Devices for Quantum Technology II (joint session HL/QI)
HL 45.8: Vortrag
Donnerstag, 21. März 2024, 16:15–16:30, EW 203
Optical dipole orientation of single photon emitters in MoS2 — •Katja Barthelmi1,2, Lukas Sigl1, Tomer Amit3, Mirco Troue1, Thomas Klokkers1, Anna Herrmann1, Takashi Taniguchi4, Kenji Watanabe4, Sivan Refaely-Abramson3, and Alexander Holleitner1,2 — 1Walter Schottky Institut and Physik Department, Technical University of Munich, Garching, Germany — 2Munich Center for Quantum Science and Technology (MCQST), Munich, Germany — 3Weizmann Institute of Science, Revohot, Israel — 4National Institute for Materials Science, Tsukuba, Japan
Single photon emitters in monolayer MoS2 can be formed by helium ion irradiation. The irradiation results in defects with an emission energy of 1.75 eV and a high position accuracy [1-3]. To further understand the microscopic structure of the defects, we study their emission dipole orientation by back focal plane imaging. We find that the optical dipole of the quantum emitters is in-plane orientated. Additionally, we resolve the far-field emission pattern spectrally through back focal plane spectroscopy. The novel method allows us to also study emission lines of low intensity.
[1] K. Barthelmi et al., in: Applied Physics Letters 117, 070501 (2020). [2] J. Klein et al., in: Nature Communications 10, 2755 (2019). [3] J. Klein and L. Sigl., in: ACS Photonics 8, 669-677 (2021). [4] K. Barthelmi et al., (2024).
Keywords: single photon emitter; 2D materials; MoS2