SKM 2023 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 3: Focus Session: Progress in Hybrid Phononic Quantum Technologies I
HL 3.7: Talk
Monday, March 27, 2023, 12:15–12:30, POT 151
Excitation and read-out of macroscopic mechanical motion by phase-modulated optical driving of a single-photon emitter — •Thilo Hahn1, Jacek Kasprzak2, Ortwin Hess3, Tilmann Kuhn1, and Daniel Wigger3 — 1Institute of Solid State Theory, University of Münster, Germany — 2Université Grenoble Alpes, CNRS, France — 3School of Physics, Trinity College Dublin, Ireland
Resonance phenomena provide an access to drive inert systems out of equilibrium by applying a periodic force. In this contribution we will investigate a hybrid quantum system consisting of a single photon emitter (SPE) that is on the one hand coupled to a single phonon mode, e.g., in the form of a mechanic resonator, and on the other hand driven by a laser field. To convert a series of laser pulses into a measurable displacement of the phonon mode, originally a synchronization between the pulse repetition and the mode frequency was suggested [2] and demonstrated. Here, we discuss a different excitation scheme that is adapted from the heterodyne four-wave mixing (FWM) technique: We consider a series of pulse pairs which drives the phonons into a far displaced quasi-coherent state by tuning the harmonically oscillating phase relation within the pulse pairs in resonance with the phonons. Conversely, the optical properties of the SPE are dynamically affected by the phonon motion. Conveniently this can directly be measured by the FWM signal emitted by the SPE in order to detect the mechanical motion. Consequently, we combine resonant driving and read-out in a single method.
[1] Phys. Rev. A 90, 023818 (2014) [2] Nat. Nanotechnol. 16, 283 (2021)