Dr. Sofia Pazzagli
Profil
Forschungsthemen1
GREENing the future of quantum optics and integrated nanoPHOtoNics (QO-IN), one lab at the time
Quelle ↗Förderer: Volkswagen Stiftung Zeitraum: 09/2024 - 08/2026 Projektleitung: Prof. Dr. Arno Rauschenbeutel, Dr. Sofia Pazzagli
Mögliche Industrie-Partner10
Stand: 26.4.2026, 19:48:44 (Top-K=20, Min-Cosine=0.4)
- DYnamic control in hybrid plasmonic NAnopores: road to next generation multiplexed single MOlecule detectionP60.0%
- DYnamic control in hybrid plasmonic NAnopores: road to next generation multiplexed single MOlecule detection
- 16 Treffer57.8%
- EU: Hybrid Organic/Inorganic Memory Elements for Integration of Electronic and Photonic Circuitry (HYMEC)P57.8%
- EU: Hybrid Organic/Inorganic Memory Elements for Integration of Electronic and Photonic Circuitry (HYMEC)
- 13 Treffer56.7%
- Interfaces in opto-electronic thin film multilayer devicesP56.7%
- Interfaces in opto-electronic thin film multilayer devices
- 5 Treffer56.3%
- Entwicklung magnetisch leitfähiger Elastomere mit 3D-Druck für induktive Übertrager mit AnwendungsentwicklungP56.3%
- Entwicklung magnetisch leitfähiger Elastomere mit 3D-Druck für induktive Übertrager mit Anwendungsentwicklung
- 5 Treffer56.3%
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- 14 Treffer56.1%
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- EU: Monomer Sequence Control in Polymers: Toward Next-Generation Precision Materials (EURO-SEQUENCES)
- 9 Treffer55.8%
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- EU: Monomer Sequence Control in Polymers: Toward Next-Generation Precision Materials (EURO-SEQUENCES)
- 15 Treffer55.3%
- EU: Bottom-Up Generation of atomicalLy Precise syntheTIc 2D MATerials for High Performance in Energy and Electronic Applications – A Multi-Site Innovative Training Action (ULTIMATE)P55.3%
- Integrated Self-Assembled SWITCHable Systems and Materials: Towards Responsive Organic Electronics – A Multi-Site Innovative Training Action (iSwitch)P50.6%
- EU: Bottom-Up Generation of atomicalLy Precise syntheTIc 2D MATerials for High Performance in Energy and Electronic Applications – A Multi-Site Innovative Training Action (ULTIMATE)
Publikationen24
Top 25 nach Zitationen — Quelle: OpenAlex (BAAI/bge-m3 embedded für Matching).
ACS Nano · 82 Zitationen · DOI
Quantum technologies could largely benefit from the control of quantum emitters in sub-micrometric size crystals. These are naturally prone to integration in hybrid devices, including heterostructures and complex photonic devices. Currently available quantum emitters in nanocrystals suffer from spectral instability, preventing their use as single-photon sources for most quantum optics operations. In this work we report on the performances of single-photon emission from organic nanocrystals (average size of hundreds of nm), made of anthracene (Ac) and doped with dibenzoterrylene (DBT) molecules. The source has hours-long photostability with respect to frequency and intensity, both at room and at cryogenic temperature. When cooled to 3 K, the 00-zero phonon line shows linewidth values (50 MHz) close to the lifetime limit. Such optical properties in a nanocrystalline environment recommend the proposed organic nanocrystals as single-photon sources for integrated photonic quantum technologies.
Nano Letters · 51 Zitationen · DOI
Solid-state quantum emitters are a mainstay of quantum nanophotonics as integrated single-photon sources (SPS) and optical nanoprobes. Integrating such emitters with active nanophotonic elements is desirable in order to attain efficient control of their optical properties, but it typically degrades the photostability of the emitter itself. Here, we demonstrate a tunable hybrid device that integrates state of the art lifetime-limited single emitters (line width ∼40 MHz) and 2D materials at subwavelength separation without degradation of the emission properties. Our device's nanoscale dimensions enable ultrabroadband tuning (tuning range >400 GHz) and fast modulation (frequency ∼100 MHz) of the emission energy, which renders it an integrated, ultracompact tunable SPS. Conversely, this offers a novel approach to optical sensing of 2D material properties using a single emitter as a nanoprobe.
Advanced Quantum Technologies · 32 Zitationen · DOI
Abstract The successful development of future photonic quantum technologies will much depend on the possibility of realizing robust and scalable nanophotonic devices. These should include quantum emitters like on‐demand single‐photon sources and non‐linear elements, provided their transition linewidth is broadened only by spontaneous emission. However, conventional strategies to on‐chip integration, based on lithographic processes in semiconductors, are typically detrimental to the coherence properties of the emitter. Moreover, such approaches are difficult to scale and bear limitations in terms of geometries. Here an alternative platform is discussed, based on molecules that preserve near‐Fourier‐limited fluorescence even when embedded in polymeric photonic structures. 3D patterns are achieved via direct laser writing around selected molecular emitters, with a fast, inexpensive, and scalable fabrication process. By using an integrated polymeric design, detected photon counts of about 2.4 Mcps from a single cold molecule are reported. The proposed technology will allow for competitive organic quantum devices, including integrated multi‐photon interferometers, arrays of indistinguishable single‐photon sources, and hybrid electro‐optical nanophotonic chips.
npj Nanophotonics · 11 Zitationen · DOI
We introduce a novel material for integrated photonics and investigate aluminum gallium nitride (AlGaN) on aluminum nitride (AlN) templates as a platform for developing reconfigurable and on-chip nonlinear optical devices. AlGaN combines compatibility with standard photonic fabrication technologies and high electro-optic modulation capabilities with low loss over a broad spectral range, from UVC to long-wave infrared, making it a viable material for complex photonic applications. In this work, we design and grow AlGaN/AlN heterostructures and integrate several photonic components. In particular, we fabricate edge couplers, low-loss waveguides, directional couplers, and tunable high-quality factor ring resonators. These devices will enable nonlinear light-matter interaction and quantum functionality. The comprehensive platform we present in this work paves the way for photon-pair generation applications, on-chip quantum frequency conversion, and fast electro-optic modulation for switching and routing classical and quantum light fields.
ACS Photonics · 11 Zitationen · DOI
Solid-state single photon sources (SPSs) with narrow line width play an important role in many leading quantum technologies. Within the wide range of SPSs studied to date, single fluorescent molecules hosted in organic crystals stand out as bright, photostable SPSs with a lifetime-limited optical resonance at cryogenic temperatures. Furthermore, recent results have demonstrated that photostability and narrow line widths are still observed from single molecules hosted in a nanocrystalline environment, which paves the way for their integration with photonic circuitry. Polymers offer a compatible matrix for embedding nanocrystals and provide a versatile yet low-cost approach for making nanophotonic structures on chip that guide light and enhance coupling to nanoscale emitters. Here, we present a deterministic nanostructuring technique based on electron-beam lithography for shaping polymers with embedded single molecules. Our approach provides a direct means of structuring the nanoscale environment of narrow line width emitters while preserving their emission properties.
Research Square · 1 Zitationen · DOI
<title>Abstract</title> In the rapidly evolving area of integrated photonics, there is a growing need for materials that satisfy the particular requirements of increasingly complex and specialized devices and applications. Present photonic material platforms have made significant progress over the past years; however, each platform still faces specific material and performance challenges. We introduce a novel material for integrated photonics: Aluminum Gallium Nitride (AlGaN) on Aluminum Nitride (AlN) as a platform for developing reconfigurable and nonlinear on-chip optical systems. AlGaN combines compatibility with standard semiconductor fabrication technologies, high electro-optic modulation capabilities, and large nonlinear coefficients while providing a broad and low-loss spectral transmission range, making it a viable material for advanced photonic applications. In this work, we design and grow AlGaN/AlN heterostructures and integrate fundamental photonic building blocks into these chips. In particular, we fabricate edge couplers, low-loss waveguides, directional couplers, and tunable high-quality factor ring resonators to enable nonlinear light-matter interaction and quantum functionality. The comprehensive platform we present in this work paves the way for nonlinear photon-pair generation applications, on-chip nonlinear quantum frequency conversion, and fast electro-optic modulation for switching and routing classical and quantum light fields.
arXiv (Cornell University) · 1 Zitationen · DOI
In the rapidly evolving area of integrated photonics, there is a growing need for materials that satisfy the particular requirements of increasingly complex and specialized devices and applications. Present photonic material platforms have made significant progress over the past years; however, each platform still faces specific material and performance challenges. We introduce a novel material for integrated photonics: Aluminum Gallium Nitride (AlGaN) on Aluminum Nitride (AlN) as a platform for developing reconfigurable and nonlinear on-chip optical systems. AlGaN combines compatibility with standard semiconductor fabrication technologies, high electro-optic modulation capabilities, and large nonlinear coefficients while providing a broad and low-loss spectral transmission range, making it a viable material for advanced photonic applications. In this work, we design and grow AlGaN/AlN heterostructures and integrate fundamental photonic building blocks into these chips. In particular, we fabricate edge couplers, low-loss waveguides, directional couplers, and tunable high-quality factor ring resonators to enable nonlinear light-matter interaction and quantum functionality. The comprehensive platform we present in this work paves the way for nonlinear photon-pair generation applications, on-chip nonlinear quantum frequency conversion, and fast electro-optic modulation for switching and routing classical and quantum light fields.
1 Zitationen · DOI
AlGaN is a highly promising material for the next generation of integrated optics due to its wide band gap and transparency over a wide spectral range, from UV to infrared [1], [2]. This material also has a relatively high electro-optic coefficient, making it ideal for fast electro-optical modulation and the fabrication of reconfigurable optical devices. Additionally, similar to AlN, the reasonably high second-order optical nonlinearity of AlGaN may enable the creation of on-chip nonlinear optical devices such as parametric oscillators, sum or difference frequency generators, and the generation of entangled photons [3]. Furthermore, the technological availability of many optoelectronic devices based on the epitaxially grown GaN/AlGaN/InGaN/AlN platform makes it possible to integrate lasers, LEDs, photodetectors, and high electron mobility transistors on the same chip.
1 Zitationen · DOI
The efficient interaction of light with quantum emitters is crucial to most applications in nano and quantum technologies. Effective excitation and collection are key ingredients for the use and manipulation of the generated single photons. We have recently demonstrated how single molecules as quantum emitters can be deposited in a planar optical antenna, resulting in a narrow radiation pattern and increased collection efficiency [1]. On-chip integration and miniaturization allows for minimized losses and tailored interaction. In the present contribution we demonstrate the deterministic integration in 3-dimensional polymeric structures of single quantum emitters close to the lifetime limit. This is achieved by 3D Laser Writing (3DLW) of commercial photoresists around self-assembled organic nanocrystals containing fluorescent molecules. Thanks also to the high 3D resolution of the two-photon absorption process, this solution offers a big advantage in terms of coupling efficiency of the emitted fluorescence to the photonic structure.
Nano Letters · 1 Zitationen · DOI
ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionNEXTORIGINAL ARTICLEThis notice is a correctionCorrection to "Electrical Control of Lifetime-Limited Quantum Emitters Using 2D Materials"Kevin G. SchädlerKevin G. SchädlerMore by Kevin G. Schädler, Carlotta CiancicoCarlotta CiancicoMore by Carlotta Ciancico, Sofia PazzagliSofia PazzagliMore by Sofia Pazzagli, Pietro LombardiPietro LombardiMore by Pietro Lombardi, Adrian BachtoldAdrian BachtoldMore by Adrian Bachtold, Costanza ToninelliCostanza ToninelliMore by Costanza Toninellihttp://orcid.org/0000-0002-6843-058X, Antoine Reserbat-PlanteyAntoine Reserbat-PlanteyMore by Antoine Reserbat-Plantey, and Frank H. L. Koppens*Frank H. L. KoppensMore by Frank H. L. Koppenshttp://orcid.org/0000-0001-9764-6120Cite this: Nano Lett. 2019, 19, 7, 4815Publication Date (Web):June 25, 2019Publication History Published online25 June 2019Published inissue 10 July 2019https://pubs.acs.org/doi/10.1021/acs.nanolett.9b02491https://doi.org/10.1021/acs.nanolett.9b02491correctionACS PublicationsCopyright © 2019 American Chemical Society. This publication is available under these Terms of Use. Request reuse permissions This publication is free to access through this site. Learn MoreArticle Views1232Altmetric-Citations1LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail PDF (229 KB) Get e-Alertsclose Get e-Alerts
Organic nanocrystals and polymeric waveguides: a novel path towards integrated quantum nanophotonics
2018Florence Research (University of Florence) · 1 Zitationen
Single photons are very robust carriers of quantum information, making single-photon emitters a fundamental resource in a wide range of proposed photonic technologies, ranging from quantum computing and secure communication schemes to metrology applications. A fundamental step is the realization of integrated quantum photonics circuit enabling single-photon emission, logical operations, routing and detection on the same platform. \nIn this context, hybrid systems made of molecule-based single photon sources coupled to dielectric waveguides appear as ideal candidates. In particular, single Dibenzoterrylene (DBT) molecules embedded in a crystalline matrix of Anthracene (Ac) constitute an interesting alternative to more conventional emitters - such as quantum dots or colour centers in diamonds – due to their bright, stable and narrow lifetime-limited emission at cryogenic temperatures. \nIn this thesis, we study possible platforms to integrate single DBT molecules into dielectric waveguides and provide efficient emission and collection of single photons. \nAs a first step we demonstrate the potentiality of an hybrid device that combines layered DBT:Ac systems and dielectric chips consisting of silicon nitride ridge waveguides and grating far-field couplers. Despite the lack of control in the positioning of the DBT molecules on the chip, we show that coupling efficiencies measured for molecules in close proximity to the dielectric waveguides are comparable to those of other solid-state systems. \nAs a second step, we develop a simple and cost-effective fabrication method to grow Ac crystal with sub-micrometric size and tunable concentration of DBT molecules. The newly developed DBT:Ac nanocrystals, that remarkably maintain the optical properties of the bulky system at both room and cryogenic temperature, are easier to manipulate and may allow the DBT:Ac system to be fully exploited as a nanoscale single photon source. \nFinally we investigate the integration of DBT:Ac nanocrystals into polymers, promising materials for integrated quantum circuitry due to the broad tunability of their electro-optical and mechanical properties and their easy structuration by means of well-established lithographic fabrication methods. In particular, we demonstrate that nanocrystal-polymer composites are compatible with usual fabrication process and can be efficiently structured both in 2D and 3D. \nWe believe that the remarkable optical properties of the developed DBT-doped organic nanocrystals and their integration in writable polymeric structures may facilitate the transition of molecules from a proof-of-concept to practical realistic applications in quantum technologies.
arXiv (Cornell University) · 1 Zitationen · DOI
Quantum technologies could largely benefit from the control of quantum\nemitters in sub-micrometric size crystals. These are naturally prone to the\nintegration in hybrid devices, including heterostructures and complex photonic\ndevices. Currently available quantum emitters sculpted in nanocrystals suffer\nfrom spectral instability, preventing their use as single photon sources e.g.,\nfor most quantum optics operations. In this work we report on unprecedented\nperformances of single-photon emission from organic nanocrystals (average size\nof hundreds \\SI{}{\\nano\\meter}), made of anthracene (Ac) and doped with\ndibenzoterrylene (DBT) molecules. The source has hours-long photostability with\nrespect to frequency and intensity, both at room and at cryogenic temperature.\nWhen cooled down to \\SI{3}{K}, the 00-zero phonon line shows linewidth values\n(\\SI{50}{MHz}) close to the lifetime-limit. Such optical properties in a\nnanocrystalline environment make the proposed organic nanocrystals a unique\nsingle-photon source for integrated photonic quantum technologies.\n
Zenodo (CERN European Organization for Nuclear Research) · DOI
This report outlines the first milestone in the structured collaboration between the Joint Action on Personalised Cancer Medicine (JA PCM) and the SPARC project (Support of Personalised Medicine Approaches in Cancer). Both initiatives share the overarching goal of accelerating the adoption, integration, and equitable implementation of personalised cancer medicine (PCM) across Europe. While JA PCM addresses the entire patient pathway from prevention, diagnosis and treatment to follow-up, and provides broad European coverage, policy reach, and system-level coordination, SPARC complements this shared goal with strong patient engagement, stakeholder participation, pilot-driven clinical evidence, and targeted activities in the diagnosis and treatment area including liquid biopsy, molecular tumour boards and training. The European Commission has mandated a formal synergy between the two initiatives, which has been structured around three deliverables and three milestones. This document represents the first tangible result. To enable effective collaboration, a joint synergy strategy was developed through a series of alignment meetings between the coordination teams. This strategy is built on three pillars: ● Integration of patient perspectives, ● Three thematic Working Groups (Liquid Biopsy & NGS, Molecular Tumor Boards, Education & Training), ● A stakeholder engagement, communication and dissemination strategy. This first deliverable establishes the governance, shared priorities, and operational framework for the JA PCM-SPARC synergy. The next phase will focus on implementing the agreed synergy actions throughout 2026, launching the patient advisory and consultation mechanisms, running the Working Groups, deploying the stakeholder engagement model, and monitoring progress to ensure the effective, equitable, and sustainable integration of personalised cancer medicine across Europe.
Zenodo (CERN European Organization for Nuclear Research) · DOI
This document is deliverable D9.5 and provides an overview of the communication,dissemination, and visibility activities implemented by the European Alliance forPersonalised Medicine (EAPM) during the early phase of the SPARC project, coveringthe period from November 2025 to January 2026. It documents the initial steps takento establish a coherent and recognisable communication framework for SPARC,ensuring a strong foundation for effective outreach, transparency, and stakeholderengagement throughout the project’s lifecycle.
Zenodo (CERN European Organization for Nuclear Research) · DOI
This document is deliverable D9.5 and provides an overview of the communication,dissemination, and visibility activities implemented by the European Alliance forPersonalised Medicine (EAPM) during the early phase of the SPARC project, coveringthe period from November 2025 to January 2026. It documents the initial steps takento establish a coherent and recognisable communication framework for SPARC,ensuring a strong foundation for effective outreach, transparency, and stakeholderengagement throughout the project’s lifecycle.
Zenodo (CERN European Organization for Nuclear Research) · DOI
This report outlines the first milestone in the structured collaboration between the Joint Action on Personalised Cancer Medicine (JA PCM) and the SPARC project (Support of Personalised Medicine Approaches in Cancer). Both initiatives share the overarching goal of accelerating the adoption, integration, and equitable implementation of personalised cancer medicine (PCM) across Europe. While JA PCM addresses the entire patient pathway from prevention, diagnosis and treatment to follow-up, and provides broad European coverage, policy reach, and system-level coordination, SPARC complements this shared goal with strong patient engagement, stakeholder participation, pilot-driven clinical evidence, and targeted activities in the diagnosis and treatment area including liquid biopsy, molecular tumour boards and training. The European Commission has mandated a formal synergy between the two initiatives, which has been structured around three deliverables and three milestones. This document represents the first tangible result. To enable effective collaboration, a joint synergy strategy was developed through a series of alignment meetings between the coordination teams. This strategy is built on three pillars: ● Integration of patient perspectives, ● Three thematic Working Groups (Liquid Biopsy & NGS, Molecular Tumor Boards, Education & Training), ● A stakeholder engagement, communication and dissemination strategy. This first deliverable establishes the governance, shared priorities, and operational framework for the JA PCM-SPARC synergy. The next phase will focus on implementing the agreed synergy actions throughout 2026, launching the patient advisory and consultation mechanisms, running the Working Groups, deploying the stakeholder engagement model, and monitoring progress to ensure the effective, equitable, and sustainable integration of personalised cancer medicine across Europe.
AlGaN on AlN/Sapphire stands out in photonics for its strong nonlinearity, electro-optic modulability, and low loss in the visible spectrum. We fabricate and characterize AlGaN photonic devices, including ring resonators, directional couplers, and tapers.
Advanced Quantum Technologies · DOI
The successful development of future photonic quantum technologies will much depend on the possibility of realizing robust and scalable nanophotonic devices. These should include quantum emitters like on-demand single-photon sources and non-linear elements, provided their transition linewidth is broadened only by spontaneous emission. However, conventional strategies to on-chip integration, based on lithographic processes in semiconductors, are typically detrimental to the coherence properties of the emitter. Moreover, such approaches are difficult to scale and bear limitations in terms of geometries. Here an alternative platform is discussed, based on molecules that preserve near-Fourier-limited fluorescence even when embedded in polymeric photonic structures. 3D patterns are achieved via direct laser writing around selected molecular emitters, with a fast, inexpensive, and scalable fabrication process. By using an integrated polymeric design, detected photon counts of about 2.4 Mcps from a single cold molecule are reported. The proposed technology will allow for competitive organic quantum devices, including integrated multi-photon interferometers, arrays of indistinguishable single-photon sources, and hybrid electro-optical nanophotonic chips.
arXiv (Cornell University) · DOI
The successful development of future photonic quantum technologies heavily depends on the possibility of realizing robust, reliable and, crucially, scalable nanophotonic devices. In integrated networks, quantum emitters can be deployed as single-photon sources or non-linear optical elements, provided their transition linewidth is broadened only by spontaneous emission. However, conventional fabrication approaches are hardly scalable, typically detrimental for the emitter coherence properties and bear limitations in terms of geometries and materials. Here we introduce an alternative platform, based on molecules embedded in polymeric photonic structures. Three-dimensional patterns are achieved via direct laser writing around selected molecular emitters, which preserve near-Fourier-limited fluorescence. By using an integrated polymeric design, record-high photon fluxes from a single cold molecule are reported. The proposed technology allows to conceive a novel class of quantum devices, including integrated multi-photon interferometers, arrays of indistinguishable single photon sources and hybrid electro-optical nanophotonic devices.
Practical implementations of quantum technologies, ranging from optical quantum computing to metrological measurements, suffer from the lack of high-rate, on-demand sources of indistinguishable single photons.
Conference on Lasers and Electro-Optics · DOI
We report on organic nanocrystals doped with tunable concentration of fluorescent molecules, grown with an easy and inexpensive method and performing as bright and photostable single-photon sources at both room and cryogenic temperatures.
arXiv (Cornell University) · DOI
Quantum technologies could largely benefit from the control of quantum emitters in sub-micrometric size crystals. These are naturally prone to the integration in hybrid devices, including heterostructures and complex photonic devices. Currently available quantum emitters sculpted in nanocrystals suffer from spectral instability, preventing their use as single photon sources e.g., for most quantum optics operations. In this work we report on unprecedented performances of single-photon emission from organic nanocrystals (average size of hundreds \SI{}{\nano\meter}), made of anthracene (Ac) and doped with dibenzoterrylene (DBT) molecules. The source has hours-long photostability with respect to frequency and intensity, both at room and at cryogenic temperature. When cooled down to \SI{3}{K}, the 00-zero phonon line shows linewidth values (\SI{50}{MHz}) close to the lifetime-limit. Such optical properties in a nanocrystalline environment make the proposed organic nanocrystals a unique single-photon source for integrated photonic quantum technologies.
arXiv (Cornell University)
Quantum technologies could largely benefit from the control of quantum emitters in sub-micrometric size crystals. These are naturally prone to the integration in hybrid devices, including heterostructures and complex photonic devices. Currently available quantum emitters sculpted in nanocrystals suffer from spectral instability, preventing their use as single photon sources e.g., for most quantum optics operations. In this work we report on unprecedented performances of single-photon emission from organic nanocrystals (average size of hundreds \SI{}{\nano\meter}), made of anthracene (Ac) and doped with dibenzoterrylene (DBT) molecules. The source has hours-long photostability with respect to frequency and intensity, both at room and at cryogenic temperature. When cooled down to \SI{3}{K}, the 00-zero phonon line shows linewidth values (\SI{50}{MHz}) close to the lifetime-limit. Such optical properties in a nanocrystalline environment make the proposed organic nanocrystals a unique single-photon source for integrated photonic quantum technologies.
MRS Proceedings · DOI
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