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arXiv · 2012.14281

Bloch Oscillations of Hybrid Light-Matter Particles in a Waveguide Array

Johannes Beierlein·Oleg. A. Egorov·Tristan H. Harder·Philipp Gagel·Monika Emmerling·Christian Schneider·Sven Höfling·Ulf Peschel·Sebastian Klembt
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Abstract

Bloch oscillations are a phenomenon well known from quantum mechanics where electrons in a lattice experience an oscillatory motion in the presence of an electric field gradient. Here, we report on Bloch oscillations of hybrid light-matter particles, called exciton-polaritons, being confined in an array of coupled microcavity waveguides. To this end, we carefully design the waveguides, widths and their mutual couplings such that a constant energy gradient is induced perpendicular to the direction of motion of the propagating exciton-polaritons. This technique allows us to directly observe and study Bloch oscillations in real- and momentum-space. Furthermore, we support our experimental findings by numerical simulations based on a modified Gross-Pitaevskii approach. Our work provides an important transfer of basic concepts of quantum mechanics to integrated solid state devices, using quantum fluids of light.

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Johannes Beierlein, Oleg. A. Egorov, Tristan H. Harder, Philipp Gagel, Monika Emmerling, Christian Schneider, Sven Höfling, Ulf Peschel, Sebastian Klembt. 2020-12-28. Bloch Oscillations of Hybrid Light-Matter Particles in a Waveguide Array. https://doi.org/10.1002/adom.202100126

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