Quantum dot single-photon emission coupled into single-mode fibers with 3D printed micro-objectives

Bremer, Lucas; Weber, Ksenia; Fischbach, Sarah; Thiele, Simon; Schmidt, Marco; Kaganskiy, Arsenty; Rodt, Sven; Herkommer, Alois; Sartison, Marc; Portalupi, Simone Luca; Michler, Peter; Gießen, Harald; Reitzenstein, Stephan

doi:10.1063/5.0014921

Cited by 43 publications

(21 citation statements)

References 46 publications

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“…In recent years, very interesting technological approaches for on-chip fiber coupling of QD-SPSs have been developed. Published results rely either on optical alignment in combination with gluing the fiber [142] or on micromechanical fiber holders and micro-optics [143,144]. Based on these initial successes, further technological developments must follow in order to significantly increase the photon coupling efficiency from a few percent achieved to date to values beyond 90%, for example using CBGs [141].…”

Section: Advances In Science and Technology To Meet Challengesmentioning

confidence: 99%

2022 Roadmap on integrated quantum photonics

et al. 2022

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Integrated photonics will play a key role in quantum systems as they grow from few-qubit prototypes to tens of thousands of qubits. The underlying optical quantum technologies can only be realized through the integration of these components onto quantum photonic integrated circuits (QPICs) with accompanying electronics. In the last decade, remarkable advances in quantum photonic integration have enabled table-top experiments to be scaled down to prototype chips with improvements in efficiency, robustness, and key performance metrics. These advances have enabled integrated quantum photonic technologies combining up to 650 optical and electrical components onto a single chip that are capable of programmable quantum information processing, chip-to-chip networking, hybrid quantum system integration, and high-speed communications. In this roadmap article, we highlight the status, current and future challenges, and emerging technologies in several key research areas in integrated quantum photonics, including photonic platforms, quantum and classical light sources, quantum frequency conversion, integrated detectors, and applications in computing, communications, and sensing. With advances in materials, photonic design architectures, fabrication and integration processes, packaging, and testing and benchmarking, in the next decade we can expect a transition from single- and few-function prototypes to large-scale integration of multi-functional and reconfigurable devices that will have a transformative impact on quantum information science and engineering.

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Section: Advances In Science and Technology To Meet Challengesmentioning

confidence: 99%

2022 Roadmap on integrated quantum photonics

et al. 2022

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“…We demonstrate that the QRT systematically overestimates the phonon impact on the indistinguishability, in particular for standard GaAs QDs relevant for technological applications [39][40][41][42][43][44][45][46]. We show that this is connected to the non-Markovian part of the dynamics.…”

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confidence: 80%

Accuracy of the quantum regression theorem for photon emission from a quantum dot

Cosacchi,

Seidelmann,

Cygorek

et al. 2021

Preprint

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The quantum regression theorem (QRT) is the most-widely used tool for calculating multitime correlation functions for the assessment of quantum emitters. It is an approximate method based on a Markov assumption for the environmental coupling. In this work we quantify properties of photons emitted from a single quantum dot coupled to phonons. For the single-photon purity and the indistinguishability, we compare numerically exact path-integral results with those obtained from the QRT. It is demonstrated that the QRT systematically overestimates the influence of the environment for typical quantum dots used in quantum information technology.

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“…A disadvantage could be the higher fabrication effort resulting from the required micro-optics and the fiber holder. However, practical implementation was demonstrated in the past for the required fiber holder [99,100], the micro(fiber) lens [95,101,102], and the overall system [100] by three-dimensional (3D) femtosecond direct laser writing. Further investigations, particularly on the effect of possible alignment errors and the influence of thermo-optical effects inside the coupling system, were recently discussed [18].…”

Section: Far-field Coupling Of Solid-state Emitters To Cleaved Fibers...mentioning

confidence: 99%

Fiber-coupled quantum light sources based on solid-state quantum emitters

Bremer

Rodt

Reitzenstein

2022

Mater. Quantum. Technol.

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Photonic quantum technology is essentially based on the exchange of individual photons as information carriers. Therefore, the development of practical single-photon sources that emit single photons on-demand is a crucial contribution to advance this emerging technology and to promoting its first real-world applications. In the last two decades, a large number of quantum light sources based on solid state emitters have been developed on a laboratory scale. Corresponding structures today have almost ideal optical and quantum-optical properties. For practical applications, however, one crucial factor is usually missing, namely direct on-chip fiber coupling, which is essential, for example, for the direct integration of such quantum devices into fiber-based quantum networks. In fact, the development of fiber-coupled quantum light sources is still in its infancy, with very promising advances having been made in recent years. Against this background, this review article presents the current status of the de-velopment of fiber-coupled quantum light sources based on solid state quantum emitters and discusses challenges, technological solutions and future prospects. Among other things, the numerical optimiza-tion of the fiber coupling efficiency, coupling methods, and important realizations of such quantum devices are presented and compared. Overall, this article provides an important overview of the state of the art and the performance parameters of fiber-coupled quantum light sources that have been achieved so far. It is aimed equally at experts in the scientific field and at students and newcomers who want to get an overview of the current developments.

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Quantum dot single-photon emission coupled into single-mode fibers with 3D printed micro-objectives

Cited by 43 publications

References 46 publications

2022 Roadmap on integrated quantum photonics

2022 Roadmap on integrated quantum photonics

Accuracy of the quantum regression theorem for photon emission from a quantum dot

Fiber-coupled quantum light sources based on solid-state quantum emitters

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