Solid-state quantum nodes based on color centers and rare-earth ions coupled with fiber Fabry–Pérot microcavities

Meng, Ruo-Ran; Liu, Xiao; Jin, Ming; Zhou, Zong-Quan; Li, Chuan-Feng; Guo, Guang-Can

doi:10.1016/j.chip.2023.100081

Chip

2024

DOI: 10.1016/j.chip.2023.100081

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Solid-state quantum nodes based on color centers and rare-earth ions coupled with fiber Fabry–Pérot microcavities

Ruo-Ran Meng,

Xiao Liu,

Ming Jin

et al.

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2024

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Cited by 2 publications

References 192 publications

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Multifunctional Metalens for Trapping and Characterizing Single Atoms

Chen,

Zhao,

Wang

et al. 2024

Laser & Photonics Reviews

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Precise control and manipulation of neutral atoms are essential for quantum technologies but largely dependent on conventional bulky optical setups. Here, a multifunctional metalens that integrates an achromatic lens with large numerical aperture is demonstrated, a quarter‐wave plate, and a polarizer for trapping and characterizing single Rubidium atoms. The metalens simultaneously focuses a trapping beam at 852 nm and collects single‐photon fluorescence at 780 nm. A strong dependence of the trapping lifetime is observed on an external bias magnetic field, suggests a complex interplay between the circularly polarized trapping light and the atom's internal states. This work showcases the potential of metasurfaces in realizing compact and integrated quantum systems based on cold atoms, opening up new possibilities for studying quantum control and manipulation at the nanoscale.

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Multifunctional Metalens for Trapping and Characterizing Single Atoms

Chen,

Zhao,

Wang

et al. 2024

Laser & Photonics Reviews

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Single and entangled photon pair generation using atomic vapors for quantum communication applications

Achar,

Kundu,

Chilukoti

et al. 2024

Front. Quantum Sci. Technol.

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Significant progress has been achieved in leveraging atomic systems for the effective operation of quantum networks, which are essential for secure and long-distance quantum communication protocols. The key elements of such networks are quantum nodes that can store or generate both single and entangled photon pairs. The primary mechanisms leading to the production of single and entangled photon pairs revolve around established techniques such as parametric down-conversion, four-wave mixing, and stimulated Raman scattering. In contrast to solid-state platforms, atomic platforms offer a more controlled approach to the generation of single and entangled photon pairs, owing to the progress made in atom manipulation techniques such as trapping, cooling, and precise excitation schemes facilitated by the use of lasers. This review article delves into the techniques implemented for generating single and entangled photon pairs in atomic platforms, starting with a detailed discussion of the fundamental concepts associated with single and entangled photons and their characterization techniques. The aim is to evaluate the strengths and limitations of these methodologies and offer insights into potential applications. Additionally, the article will review the extent to which these atomic-based systems have been integrated into operational quantum communication networks.

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Solid-state quantum nodes based on color centers and rare-earth ions coupled with fiber Fabry–Pérot microcavities

Cited by 2 publications

References 192 publications

Multifunctional Metalens for Trapping and Characterizing Single Atoms

Multifunctional Metalens for Trapping and Characterizing Single Atoms

Single and entangled photon pair generation using atomic vapors for quantum communication applications

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