Ultra-bright single photon source based on an atomically thin material
- URL: http://arxiv.org/abs/2302.06340v1
- Date: Mon, 13 Feb 2023 13:22:47 GMT
- Title: Ultra-bright single photon source based on an atomically thin material
- Authors: Jens Christian Drawer, Victor Nikolaevich Mitryakhin, Hangyong Shan,
Sven Stephan, Moritz Gittinger, Lukas Lackner, Bo Han, Gilbert Leibeling,
Falk Eilenberger, Rounak Banerjee, Sefaattin Tongay, Kenji Watanabe, Takashi
Taniguchi, Christoph Lienau, Martin Silies, Carlos Anton-Solanas, Martin
Esmann, Christian Schneider
- Abstract summary: Solid-state single photon sources are central building blocks in quantum communication networks and on-chip quantum information processing.
Here, we implement a single photon source based on an atomically thin sheet of WSe2 coupled to a spectrally tunable optical cavity.
It is characterized by a high single photon purity with a $g(2)(0)$ value as low as $4.7 pm 0.7 %$ and a record-high first lens brightness of linearly polarized photons as large as $65 pm 4 %$.
- Score: 6.062778743244592
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Solid-state single photon sources are central building blocks in quantum
communication networks and on-chip quantum information processing. Atomically
thin crystals were established as possible candidates to emit non-classical
states of light, however, the performance of monolayer-based single photon
sources has so far been lacking behind state-of-the-art devices based on volume
crystals. Here, we implement a single photon source based on an atomically thin
sheet of WSe2 coupled to a spectrally tunable optical cavity. It is
characterized by a high single photon purity with a $g^{(2)}(0)$ value as low
as $4.7 \pm 0.7 \%$ and a record-high first lens brightness of linearly
polarized photons as large as $65 \pm 4 \%$. Interestingly, the high
performance of our devices allows us to observe genuine quantum interference
phenomena in a Hong-Ou-Mandel experiment. Our results demonstrate that open
cavities and two-dimensional materials constitute an excellent platform for
ultra-bright quantum light sources: the unique properties of such
two-dimensional materials and the versatility of open cavities open an
inspiring avenue for novel quantum optoelectronic devices.
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