Freiburg 2024 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 34: Color Centers II
Q 34.2: Vortrag
Mittwoch, 13. März 2024, 15:00–15:15, HS 1221
Implementation of the SUPER coherent control scheme with a tin-vacancy color center in diamond — •Mustafa Gökçe1, Cem Güney Torun1, Thomas K. Bracht2, Mariano Isaza Monsalve1, Sarah Benbouabdellah1, Özgür Ozan Nacitarhan1, Marco E. Stucki1,3, Gregor Pieplow1, Tommaso Pregnolato1,3, Joseph H. D. Munns1, Doris E. Reiter4, and Tim Schröder1,3 — 1Humboldt University of Berlin, Berlin, Germany — 2University of Münster, Münster, Germany — 3Ferdinand-Braun-Institute, 12489 Berlin, Germany — 4Technical University Dortmund, Dortmund, Germany
The creation of coherent single photons for quantum applications requires deterministic excitation, realized by resonant excitation. However, a challenge is filtering spectrally overlapping the excitation laser from emitted single photons. One method for separation is using cross-polarization microscopy, which results in 50% loss of emitted photons. A novel method of coherent excitation called the swing-up of the quantum emitter population (SUPER) has been introduced. This method incorporates two-color nonresonant pulses achieving full inversion to the excited state. The SUPER method enables spectral filtering. To implement the SUPER method, we built a spectral pulse engineering setup, which tailors pulses with desired spectral shapes. We demonstrate coherent single photon emission using non resonant pulses and replicate our results using a theoretical model. We employ this method using pulses in the picosecond pulse duration regime and pave the way for utilization of these gates for the investigation of ultrafast processes.
Keywords: tin-vacancy color center in diamond; swing-up of the quantum emitter population (SUPER); single quantum emitter; coherent excitation; solid state systems