Related papers: Engineering the impact of phonon dephasing on the coherence of a WSe$_{2}$ single-photon source via cavity quantum electrodynamics

Engineering the impact of phonon dephasing on the coherence of a WSe$_{2}$ single-photon source via cavity quantum electrodynamics

URL: http://arxiv.org/abs/2307.06891v2
Date: Thu, 4 Apr 2024 08:42:24 GMT
Title: Engineering the impact of phonon dephasing on the coherence of a WSe$_{2}$ single-photon source via cavity quantum electrodynamics
Authors: Victor Nikolaevich Mitryakhin, Alexander Steinhoff, Jens-Christian Drawer, Hangyong Shan, Matthias Florian, Lukas Lackner, Bo Han, Falk Eilenberger, Sefaattin Tongay, Kenji Watanabe, Takashi Taniguchi, Carlos Antón-Solanas, Ana Predojević, Christopher Gies, Martin Esmann, Christian Schneider,
Abstract summary: Emitter dephasing is one of the key issues in the performance of solid-state single photon sources. We show that it is possible to tune and engineer the coherence of photons emitted from a single WSe$$ monolayer dot via selectively coupling it to a spectral cavity resonance.
Score: 36.88715167286119
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Emitter dephasing is one of the key issues in the performance of solid-state single photon sources. Among the various sources of dephasing, acoustic phonons play a central role in adding decoherence to the single photon emission. Here, we demonstrate, that it is possible to tune and engineer the coherence of photons emitted from a single WSe$_2$ monolayer quantum dot via selectively coupling it to a spectral cavity resonance. We utilize an open cavity to demonstrate spectral enhancement, leveling, and suppression of the highly asymmetric phonon sideband, finding excellent agreement with a microscopic description of the exciton-phonon dephasing in a truly two-dimensional system. Moreover, the impact of cavity tuning on the dephasing is directly assessed via optical interferometry, which points out the capability to utilize light-matter coupling to steer and design dephasing and coherence of quantum emitters in atomically thin crystals.

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