Single-Photon Source in a Topological Cavity

Jurkat, Jonathan; Klembt, Sebastian; Gregorio, Marco De; Meinecke, Moritz; Buchinger, Quirin; Harder, Tristan H.; Beierlein, Johannes; Egorov, Oleg A.; Emmerling, Monika; Krause, Constantin; Schneider, Christian; Huber-Loyola, Tobias; Höfling, Sven

doi:10.1021/acs.nanolett.2c03693

Cited by 4 publications

(4 citation statements)

References 47 publications

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“…[114,115] Additionally, tailoring the coupled photonic mode, the QD emission can be encoded in orbital angular momentum, [116,117] suitable for information encoding in a large basis. Within the emergent field of topology in photonics we would like to mention two works where the QD emission is released in a topological cavity [118] or topological waveguides: [119] in these approaches, information could be propagated on-chip presenting resilience against losses or defects in the material.…”

Section: A Leading Solid-state Platform: Self-assembled Semiconductor...mentioning

confidence: 99%

Solid‐State Single‐Photon Sources: Recent Advances for Novel Quantum Materials

Esmann,

Wein,

Antón‐Solanas

2024

Adv Funct Materials

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In this review, the current landscape of emergent quantum materials for quantum photonic applications is described. The review focuses on three specific solid‐state platforms: single emitters in monolayers of transition metal dichalcogenides (TMDs), defects in hexagonal boron nitride (hBN), and colloidal quantum dots in perovskites (PQDs). These platforms share a unique technological accessibility, enabling the rapid implementation of testbed quantum applications, all while being on the verge of becoming technologically mature enough for a first generation of real‐world quantum applications. The review begins with a comprehensive overview of the current state‐of‐the‐art for relevant single‐photon sources in the solid‐state, introducing the most important performance criteria and experimental characterization techniques along the way. Progress for each of the three novel materials is then benchmarked against more established (yet complex) platforms, highlighting performance, material‐specific advantages, and giving an outlook on quantum applications. This review will thus provide the reader with a snapshot on latest developments in the fast‐paced field of emergent single‐photon sources in the solid‐state, including all the required concepts and experiments relevant to this technology.

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Section: A Leading Solid-state Platform: Self-assembled Semiconductor...mentioning

confidence: 99%

Solid‐State Single‐Photon Sources: Recent Advances for Novel Quantum Materials

Esmann,

Wein,

Antón‐Solanas

2024

Adv Funct Materials

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“…However, these topological quantum light sources are not realized based on semiconductor quantum dots. In 2023, Jurkat J. et al demonstrated a single-photon source based on a single semiconductor QD coupled to a topologically nontrivial SSH cavity mode and provided an in-depth study of Purcell enhancement (F p = 1.8 ± 0.4) for this topological quantum light source and demonstrate its emission of nonclassical light (the second-order correlation function of the in resonant QD gives a g (2) (0) = (0.365 ± 0.006)) on demand [87]. Figure 8c shows a sketch of the structure, where the cut through the structures highlights the difference in the cavity layer thickness and, therefore, a difference in the optical confinement potential.…”

Section: Artificial-microstructure Enhanced Single Photon Emission Fr...mentioning

confidence: 99%

Quantum Light Source Based on Semiconductor Quantum Dots: A Review

Liu

2023

Photonics

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Quantum light sources that generate single photons and entangled photons have important applications in the fields of secure quantum communication and linear optical quantum computing. Self-assembled semiconductor quantum dots, also known as “artificial atoms”, have discrete energy-level structures due to electronic confinement in all three spatial dimensions. It has the advantages of high stability, high brightness, deterministic, and tunable emission wavelength, and is easy to integrate into an optical microcavity with a high-quality factor, which can realize a high-performance quantum light source. In this paper, we first introduce the generation principles, properties, and applications of single-photon sources in the field of quantum information and then present implementations and development of quantum light sources in self-assembled semiconductor quantum dot materials. Finally, we conclude with an outlook on the future development of semiconductor quantum dot quantum light sources.

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“…However, challenges persist in coupling single QDs to highly confined topological cavities, primarily due to the random spatial distribution of QDs during their growth process. Previous attempts to implement such configurations encountered difficulties in achieving significant enhancement of light-matter interactions, resulting in Purcell factors below 1.8 27 , 39 . Thus, the deterministic interaction between a single QD and a topological cavity is highly desirable to fully exploit the advantageous properties of topology.…”

Section: Introductionmentioning

confidence: 99%

Single photon emitter deterministically coupled to a topological corner state

Rao,

Shi,

Rao

et al. 2024

Light Sci Appl

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Incorporating topological physics into the realm of quantum photonics holds the promise of developing quantum light emitters with inherent topological robustness and immunity to backscattering. Nonetheless, the deterministic interaction of quantum emitters with topologically nontrivial resonances remains largely unexplored. Here we present a single photon emitter that utilizes a single semiconductor quantum dot, deterministically coupled to a second-order topological corner state in a photonic crystal cavity. By investigating the Purcell enhancement of both single photon count and emission rate within this topological cavity, we achieve an experimental Purcell factor of Fp = 3.7. Furthermore, we demonstrate the on-demand emission of polarized single photons, with a second-order autocorrelation function g(2)(0) as low as 0.024 ± 0.103. Our approach facilitates the customization of light-matter interactions in topologically nontrivial environments, thereby offering promising applications in the field of quantum photonics.

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Single-Photon Source in a Topological Cavity

Cited by 4 publications

References 47 publications

Solid‐State Single‐Photon Sources: Recent Advances for Novel Quantum Materials

Solid‐State Single‐Photon Sources: Recent Advances for Novel Quantum Materials

Quantum Light Source Based on Semiconductor Quantum Dots: A Review

Single photon emitter deterministically coupled to a topological corner state

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