Quantum interference of identical photons from remote GaAs quantum dots

Zhai, Liang; Nguyen, Giang N.; Spinnler, Clemens; Ritzmann, Julian; Löbl, Matthias C.; Wieck, Andreas D.; Ludwig, Arne; Javadi, Alisa; Warburton, Richard J.

doi:10.1038/s41565-022-01131-2

Cited by 97 publications

(52 citation statements)

References 49 publications

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“…Very recently, Zhai et al. [ 327 ] achieved remote TPI visibilities of up to 93% representing the current state‐of‐the‐art. The authors used GaAs QDs fabricated via the droplet‐etching technique and applied electrical gates for reducing spectral diffusion, which was sufficient to achieve an unprecedentedly low level of dephasing.…”

Section: Recent Progress On Building Blocks For Quantum Networkmentioning

confidence: 99%

Quantum Communication Using Semiconductor Quantum Dots

et al. 2022

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Worldwide, enormous efforts are directed toward the development of the so-called quantum internet. Turning this long-sought-after dream into reality is a great challenge that will require breakthroughs in quantum communication and computing. To establish a global, quantum-secured communication infrastructure, photonic quantum technologies will doubtlessly play a major role, by providing and interfacing essential quantum resources, for example, flying-and stationary qubits or quantum memories. Over the last decade, significant progress has been made in the engineering of on-demand quantum light sources based on semiconductor quantum dots, which enable the generation of close-to-ideal single-and entangled-photon states, useful for applications in quantum information processing. This review focuses on implementations of, and building blocks for, quantum communication using quantum-light sources based on epitaxial semiconductor quantum dots. After reviewing the main notions of quantum communication and introducing the devices used for single-photon and entangled-photon generation, an overview of experimental implementations of quantum key distribution protocols using quantum dot based quantum light sources is provided. Furthermore, recent progress toward quantum-secured communication networks as well as building blocks thereof is summarized. The article closes with an outlook, discussing future perspectives in the field and identifying the main challenges to be solved.

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Section: Recent Progress On Building Blocks For Quantum Networkmentioning

confidence: 99%

Quantum Communication Using Semiconductor Quantum Dots

et al. 2022

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“…The rapid development of processing and tuning techniques has enhanced the indistinguishability of photons between different emitters and increased the number of emitters on-chip. Though not in the telecom band, quantum interference of photons from two remote quantum dots with a visibility of 93.0% [76] and large-scale integration of artificial atoms in hybrid AlN photonic circuits [77] have been demonstrated recently.…”

Section: A Single-photon Sourcesmentioning

confidence: 99%

Silicon photonic devices for scalable quantum information applications

Feng¹,

Zhang

Wang

et al. 2022

Photon. Res.

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With high integration density and excellent optical properties, silicon photonics is becoming a promising platform for complete integration and large-scale optical quantum information processing. Scalable quantum information applications need photon generation and detection to be integrated on the same chip, and we have seen that various devices on the silicon photonic chip have been developed for this goal. This paper reviews the relevant research results and state-of-the-art technologies on the silicon photonic chip for scalable quantum applications. Despite the shortcomings, the properties of some components have already met the requirements for further expansion. Furthermore, we point out the challenges ahead and future research directions for on-chip scalable quantum information applications.

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“…Advances in spinphoton entanglement [45] paved the way for photon-mediated entanglement of remote qubits [46]- [48], culminating in the recent demonstration of a three-node quantum network [49], [50]. While these demonstrations have been fruitful, it is worth noting that parallel advances have been made with other experimental platforms including trapped atoms and ions [17], [51]- [56], superconducting resonators [57], [58], selfassembled quantum dots [59]- [61], and defect-based qubits in other wide-bandgap semiconductors and dielectrics [62]- [72].…”

Section: Introductionmentioning

confidence: 99%

Diamond Integrated Quantum Nanophotonics: Spins, Photons and Phonons

Shandilya

Flågan

Carvalho

et al. 2022

J. Lightwave Technol.

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Integrated quantum photonics devices in diamond have tremendous potential for many quantum applications, including long-distance quantum communication, quantum information processing, and quantum sensing. These devices benefit from diamond's combination of exceptional thermal, optical, and mechanical properties. Its wide electronic bandgap makes diamond an ideal host for a variety of optical active spin qubits that are key building blocks for quantum technologies. In landmark experiments, diamond spin qubits have enabled demonstrations of remote entanglement, memory-enhanced quantum communication, and multi-qubit spin registers with fault-tolerant quantum error correction, leading to the realization of multinode quantum networks. These advancements put diamond at the forefront of solid-state material platforms for quantum information processing. Recent developments in diamond nanofabrication techniques provide a promising route to further scaling of these landmark experiments towards real-life quantum technologies. In this paper, we focus on the recent progress in creating integrated diamond quantum photonic devices, with particular emphasis on spin-photon interfaces, cavity optomechanical devices, and spin-phonon transduction. Finally, we discuss prospects and remaining challenges for the use of diamond in scalable quantum technologies.

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Quantum interference of identical photons from remote GaAs quantum dots

Cited by 97 publications

References 49 publications

Quantum Communication Using Semiconductor Quantum Dots

Quantum Communication Using Semiconductor Quantum Dots

Silicon photonic devices for scalable quantum information applications

Diamond Integrated Quantum Nanophotonics: Spins, Photons and Phonons

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