Bright single photon source based on self-aligned quantum dot–cavity systems
Open accessAbstract
We report on a quasi-planar quantum-dot-based single-photon source that shows an unprecedented high extraction efficiency of 42% without complex photonic resonator geometries or post-growth nanofabrication. This very high efficiency originates from the coupling of the photons emitted by a quantum dot to a Gaussian shaped nanohill defect that naturally arises during epitaxial growth in a self-aligned manner. We investigate the morphology of these defects and characterize the photonic operation mechanism. Our results show that these naturally arising coupled quantum dot-defects provide a new avenue for efficient (up to 42% demonstrated) and pure (g(2)(0) value of 0.023) single-photon emission.
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Immediate applications include implementation of Boson sampling with time-bin encoding using a loop-based architecture.
“Immediate applications include implementation of Boson sampling [23] with time-bin encoding using a loop-based architecture [26].”
From On-Demand Single Photons with High Extraction Efficiency and Near-Unity Indistinguishability from a Resonantly Driven Quantum Dot in a Micropillar (2016) · cites this paper as [26]
The QD-micropillar device has potential as an efficient source of a string of indistinguishable single photons, suitable for linear optical quantum computing and Boson sampling experiments with time-bin encoding.
“This demonstrates the potential of this QD-micropillar device as an efficient source of a string of indistinguishable single photons, which are particularly suitable for linear optical quantum computing and Boson sampling experiments with time-bin encoding [26].”
From On-Demand Single Photons with High Extraction Efficiency and Near-Unity Indistinguishability from a Resonantly Driven Quantum Dot in a Micropillar (2016) · cites this paper as [26]
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References 23 · Cited by 57
- Authors
- Maier, S., Gold, P., Forchel, A., Gregersen, N., Mørk, J., Höfling, S., Schneider, C., & Kamp, M.
- Affiliations
- University of Würzburg (DE)
- ORCID
- Venue
- Optics Express
- Publisher
- Optica Publishing Group
- Published
- 2014-03-31
- Volume
- 22
- Issue
- 7
- Pages
- 8136
- ISSN
- 1094-4087 (ISSN-L)
- OpenAlex
- W1988815619
- Cited by
- 57
- References
- 23
- Citations by year
- 2026: 1 · 2025: 4 · 2024: 2 · 2023: 1 · 2022: 2 · 2021: 5 · 2020: 5 · 2019: 5 · 2018: 6 · 2017: 7 · 2016: 10 · 2015: 8 · 2014: 1
- FWCI
- 4.31
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Optics Express (publishedVersion)
- PubMed (publishedVersion)
- Online Publication Service of Würzburg University (Würzburg University) (submittedVersion)
- Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU) (submittedVersion, other-oa)
- St Andrews Research Repository (St Andrews Research Repository) (submittedVersion)
- Funders
- Villum Fonden (00008692)
- Bundesministerium für Bildung und Forschung
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Semiconductor Quantum Structures and Devices
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Semiconductor Lasers and Optical Devices
- Physical Sciences › Materials Science › Materials Chemistry › Quantum Dots Synthesis And Properties
- Keywords
- single-photon sources, quantum dots, epitaxial growth defects, photon extraction efficiency
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