Bright and Polarized Fiber In-Line Single-Photon Source Based on Plasmon-Enhanced Emission into Nanofiber Guided Modes

被引：7
|
作者：
Shafi, K. Muhammed [1 ,2 ,3 ,4 ]
Yalla, Ramachandrarao [5 ]
Nayak, Kali P. [1 ,2 ,6 ]
机构：
[1] Univ Electrocommun, Ctr Photon Innovat, Tokyo 1828585, Japan
[2] Univ Electrocommun, Inst Laser Sci, Tokyo 1828585, Japan
[3] Deltafiber jp Ltd, Tomi, Nagano 3890406, Japan
[4] Indian Inst Sci, Dept Instrumentat & Appl Phys, Bengaluru 560012, India
[5] Univ Hyderabad, Sch Phys, Hyderabad 500046, Telangana, India
[6] Univ Electrocommun, Dept Engn Sci, Tokyo 1828585, Japan
来源：
PHYSICAL REVIEW APPLIED | 2023年 / 19卷 / 03期
基金：
日本学术振兴会;
关键词：
QUANTUM DOTS; AUGER RECOMBINATION; PLATFORM;
D O I：
10.1103/PhysRevApplied.19.034008
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We demonstrate a bright and polarized fiber in-line single-photon source based on plasmon-enhanced emission of colloidal single quantum dots into an optical nanofiber. We show that emission properties of single quantum dots can be strongly enhanced in the presence of single gold nanorods leading to a bright and strongly polarized single-photon emission. The single photons are efficiently coupled to guided modes of the nanofiber and eventually to a single-mode optical fiber. The brightness (fiber-coupled photon count rate) of the single-photon source is estimated to be 12.2 symbolscript 0.6 MHz, with high single-photon purity symbolscript symbolscript 0.20 symbolscript 0.04] and degree of polarization as high as 94-97 %. The polarized and fiber-coupled single photons can be implemented for potential applications in quantum photonics.
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收藏
页数：9
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