Nanobiotechnology Reports, Год журнала: 2024, Номер 19(S1), С. S37 - S44
Опубликована: Дек. 1, 2024
Язык: Английский
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Апрель 18, 2024
Abstract Single indistinguishable photons at telecom C-band wavelengths are essential for quantum networks and the future internet. However, high-throughput technology single-photon generation 1550 nm remained a missing building block to overcome present limitations in communication information technologies. Here, we demonstrate fabrication of quantum-photonic integrated devices operating based on epitaxial semiconductor dots. Our technique enables deterministic integration single pre-selected emitters into microcavities circular Bragg gratings. Respective feature triggered with ultra-high purity record-high photon indistinguishability. Further improvements yield coherence properties will pave way implementing non-linear advanced wavelengths.
Язык: Английский
Процитировано
27
Nano Letters, Год журнала: 2024, Номер 24(28), С. 8626 - 8633
Опубликована: Июль 8, 2024
Long-range, terrestrial quantum networks require high-brightness single-photon sources emitting in the telecom C-band for maximum transmission rates. For solid-state emitters, underlying pumping process, i.e., coherent or incoherent excitation schemes, impacts several photon properties such as indistinguishability, purity, and number coherence. These play a major role communication applications, latter particular cryptography. Here, we present versatile source that is operated coherently incoherently using two complementary schemes. The based on dot coupled to circular Bragg grating cavity, whereas (incoherent) operation performed via novel SUPER scheme (phonon-assisted excitation). In this way, high end-to-end-efficiencies (η
Язык: Английский
Процитировано
9
Nanophotonics, Год журнала: 2025, Номер unknown
Опубликована: Май 5, 2025
Abstract Solid-state quantum emitters operating in the telecom wavelength range are pivotal for development of scalable information processing technologies. In this review, we provide a comprehensive overview state-of-the-art solid-state single photons targeting discrete-variable regime and range. We focus on dots, color centers, erbium ion dopants, detailing their synthesis methods applications. The review addresses strategies integration these into photonic devices alongside associated challenges. also discuss applications technologies, examining current limitations, including performance constraints, decoherence, scalability. Finally, propose future directions advancing photonic-based
Язык: Английский
Процитировано
1
Advanced Quantum Technologies, Год журнала: 2023, Номер 6(12)
Опубликована: Окт. 3, 2023
Abstract Purcell‐enhanced quantum dot single‐photon emission in the telecom C‐band from InAs dots inside circular Bragg grating cavities is shown. The are grown by means of molecular beam epitaxy on an InP substrate and embedded into a quaternary In 0.53 Al 0.23 Ga 0.24 As membrane structure. post‐growth flip‐chip process with subsequent removal electron beam‐lithography, (“bullseye”) resonators defined. Micro‐photoluminescence studies devices at cryogenic temperatures K reveal individual lines pronounced cavity mode. Time‐correlated counting measurements under above‐band gap excitation yield excitonic decay times ps corresponding to Purcell factor . Pronounced photon antibunching background limited observed, which demonstrates that light originated mostly one single dot.
Язык: Английский
Процитировано
11
Optics Express, Год журнала: 2024, Номер 32(8), С. 14789 - 14789
Опубликована: Март 27, 2024
Efficient generation of entangled photon pairs at telecom wavelengths is a key ingredient for long-range quantum networks. While embedding semiconductor dots into hybrid circular Bragg gratings has proven effective, it conflicts with p - i n diode heterostructures which offer superior coherence. We propose and analyze photonic crystal gratings, incorporating air holes to facilitate charge carrier transport without compromising optical properties. Through numerical simulations, broad cavity mode Purcell factor 23 enhancing both exciton biexciton transitions, exceptional collection efficiency 92.4% an objective aperture 0.7 are achieved. Furthermore, our design demonstrates direct coupling over 90.5% single-mode fiber the entire C-band. The grating thereby emerges as promising solution efficient highly coherent, polarization-entangled pairs.
Язык: Английский
Процитировано
4
Advanced Quantum Technologies, Год журнала: 2025, Номер unknown
Опубликована: Янв. 8, 2025
Abstract Semiconductor quantum dots are a versatile source of single photons with tunable properties to be used in quantum‐cryptographic applications. A crucial figure merit the emitted is photon number coherence (PNC), which impacts security many communication protocols. In process single‐photon generation, dot as solid‐state object subject an interaction phonons, can therefore indirectly affect PNC. this study, origin PNC optically excited and its phonons elaborated upon. contrast expectation that always deteriorate coherence, increased dot‐cavity system due electron–phonon interaction.
Язык: Английский
Процитировано
0
Advanced Quantum Technologies, Год журнала: 2025, Номер unknown
Опубликована: Янв. 18, 2025
Abstract Photonic quantum technological applications require single photon sources as of qubits. Two‐dimensional (2D) material platforms have emerged deterministic, scalable, and on‐chip integrated photons. Generation control the remain challenging yet rewarding research problems. Interfacing with waveguides is a significant task for such information processing, cryptography, networking. In this work, comprehensive review formation from 2D materials presented. The creation these emitters working both at room low temperatures are critically analyzed. methodology deterministic position‐controlled elaborated pictorially explained. Major compared various other resources. end, application photons in communications, computation, sensing discussed.
Язык: Английский
Процитировано
0
Applied Physics Reviews, Год журнала: 2025, Номер 12(1)
Опубликована: Янв. 24, 2025
Developing reliable and efficient single-photon sources is crucial for advancing quantum technologies, relying on nonlinear frequency conversion or spontaneous emission from individual emitters. While different types of excel in specific applications, none meet all criteria an “ideal” source: exceptional brightness, high purity, indistinguishability. To address this challenge, coupling emitters with designer nanostructures can significantly enhance performance, a pivotal area nanophotonics. This review summarizes recent advancements over the past decade generating manipulating single photons, emphasizing role nanostructure coupling. Single-photon systems—such as crystals, solid-state defects, dots, carbon nanotubes, two-dimensional materials—are categorized quantitatively based their ability to achieve indistinguishability, presented three-dimensional technology map. Furthermore, engineering showcased properties such direction, polarization, chirality, entanglement photons. By elucidating these critical aspects, aims advance understanding how nanostructured environments promise shape future generation manipulation within
Язык: Английский
Процитировано
0
physica status solidi (b), Год журнала: 2025, Номер unknown
Опубликована: Фев. 2, 2025
Single‐photon emitters are essential components for the development of optical quantum computing and other technologies, semiconductor dots one most promising systems scalable implementation this type light sources. However, polarization decoherence is still an important challenge to overcome. Herein, combined influence electron–hole exchange Förster energy transfer in a pair laterally coupled self‐assembled dots, on exciton‐spin coherence time, studied. The numerical simulations suggest that under some conditions, interplay between those two interactions slows as compared single‐dot case, which favors applicability generation devices.
Язык: Английский
Процитировано
0
npj Quantum Information, Год журнала: 2025, Номер 11(1)
Опубликована: Фев. 6, 2025
Язык: Английский
Процитировано
0