Single-Photon Sources. Review. Part 2

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Abstract

This review discusses various ways to create single-photon sources (SPS). The task of generating single photons can be solved in various ways, and at the moment there is no one among them that would be significantly preferable.

The first part of the review discussed the requirements for single-photon sources and criteria for characterizing sources. The first part of the review included single photons sources based on single ions and based on single atoms.

The second part reviews SPS based on quantum dots and color centers in crystals.

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About the authors

V. G. Krishtop

Institute of Microelectronics Technology and High Purity Materials RAS; JSC “InfoTeСS”; Moscow Institute of Physics and Technology

Author for correspondence.
Email: vladimir.krishtop@infotecs.ru
ORCID iD: 0000-0001-6063-2657
Russian Federation, Chernogolovka, Moscow region; Moscow; Dolgoprudny, Moscow Region

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2. Fig. 8. Microcavity-enhanced semiconductor QD single-photon sources [72]: a) – a single quantum dot embedded in a micropillar with Bragg mirrors; b) – electrically controlled single-photon sources: a micropillar containing a quantum dot is connected to a surrounding circular frame by four one-dimensional wires [109]; c) – a solid-state quantum light source consisting of a single quantum dot integrated within a monolithic microlens [110]; d) – a sketch of a single-photon source with a piezoelectrically tunable circular Bragg grating resonator. The source consists of a 125 nm thick GaAs membrane with In(Ga)As quantum dots, a 360 nm SiO2 layer, and a reflecting gold mirror bonded to a piezo substrate [111]; e) – a bright semiconductor single-photon source pumped with heterogeneous integrated micropillar lasers with electrical injections [112]; f) – waveguide-coupled QD-H1 photonic crystal cavities single-photon sources [113]

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3. Fig.9. Schematic representation of the TM center in a diamond [114]]

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4. Fig. 10. Schematic representation of the effect of total internal reflection

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5. Fig. 11. Immersion microlens on the diamond surface [123]

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6. Fig. 12. Immersion metalens based on Fresnel optics with a nanostructured surface [126]

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