Trapped Ion Single-Photon Emitter for Quantum Networking

Sosnova, Ksenia; Crocker, Clayton; Lichtman, Martin; Carter, A.; Scarano, Sophia; Monroe, Christopher

doi:10.1364/fio.2018.fw7a.5

Cited by 1 publication

(1 citation statement)

References 5 publications

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“…Among the many material candidates, including self-assembled quantum dots (QDs), [6][7][8][9][10][11] defects in hexagonal boron nitride, [12][13][14][15][16] diamond, [17][18][19][20] or two-dimensional materials, [21][22][23] trapped ions, [24][25][26] and molecules, 27,28,[28][29][30] colloidal QDs have emerged as promising building blocks for integrated photonic systems that provides a unique approach to solve the challenge of deterministic, scalable integration. Colloidal core-shell Cd-and In-based QDs or halide perovskite QDs can be prepared to exhibit strong antibunching behavior, i.e., their second-order intensity correlation at zero time delay (g (2) (0)) is less than 0.5 and often approaches zero for a single emitter.…”

Section: Introductionmentioning

confidence: 99%

Deterministic Quantum Light Arrays from Giant Silica-Shelled Quantum Dots

Nguyen

Sharp

Froech

et al. 2022

Preprint

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Colloidal quantum dots (QDs) are promising candidates for single-photon sources with applications in photonic quantum information technologies. Developing practical photonic quantum devices with colloidal materials, however, requires scalable deterministic placement of stable single QD emitters. In this work, we describe a method to exploit QD size to facilitate deterministic positioning of single QDs into large arrays while maintaining their photostability and single-photon emission properties. CdSe/CdS core/shell QDs were encapsulated in silica to both increase their physical size without perturbing their quantum-confined emission and enhance their photostability. These giant QDs were then precisely positioned into ordered arrays using template-assisted self-assembly with a 75% yield for single QDs. We show that the QDs before and after assembly exhibit anti-bunching behavior at room temperature and their optical properties are retained after an extended period of time. Together, this bottom-up synthetic approach via silica shelling and the robust template-assisted self-assembly offer a unique approach to produce scalable quantum photonics platforms using colloidal QDs as single-photon emitters.

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