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Bright Single InAsP Quantum Dots at Telecom Wavelengths in Position-Controlled InP Nanowires: The Role of the Photonic Waveguide
Nano Letters ( IF 9.6 ) Pub Date : 2018-04-04 00:00:00 , DOI: 10.1021/acs.nanolett.8b00550 Sofiane Haffouz 1 , Katharina D. Zeuner 2 , Dan Dalacu 1 , Philip J. Poole 1 , Jean Lapointe 1 , Daniel Poitras 1 , Khaled Mnaymneh 1 , Xiaohua Wu 1 , Martin Couillard 1 , Marek Korkusinski 1 , Eva Schöll 2 , Klaus D. Jöns 2 , Valery Zwiller 2 , Robin L. Williams 1
Nano Letters ( IF 9.6 ) Pub Date : 2018-04-04 00:00:00 , DOI: 10.1021/acs.nanolett.8b00550 Sofiane Haffouz 1 , Katharina D. Zeuner 2 , Dan Dalacu 1 , Philip J. Poole 1 , Jean Lapointe 1 , Daniel Poitras 1 , Khaled Mnaymneh 1 , Xiaohua Wu 1 , Martin Couillard 1 , Marek Korkusinski 1 , Eva Schöll 2 , Klaus D. Jöns 2 , Valery Zwiller 2 , Robin L. Williams 1
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We report on the site-selected growth of bright single InAsP quantum dots embedded within InP photonic nanowire waveguides emitting at telecom wavelengths. We demonstrate a dramatic dependence of the emission rate on both the emission wavelength and the nanowire diameter. With an appropriately designed waveguide, tailored to the emission wavelength of the dot, an increase in the count rate by nearly 2 orders of magnitude (0.4 to 35 kcps) is obtained for quantum dots emitting in the telecom O-band, showing high single-photon purity with multiphoton emission probabilities down to 2%. Using emission-wavelength-optimized waveguides, we demonstrate bright, narrow-line-width emission from single InAsP quantum dots with an unprecedented tuning range of 880 to 1550 nm. These results pave the way toward efficient single-photon sources at telecom wavelengths using deterministically grown InAsP/InP nanowire quantum dots.
中文翻译：
位置控制的InP纳米线中电信波长处的明亮单个InAsP量子点：光子波导的作用
我们报告了嵌入在以电信波长发射的InP光子纳米线波导中的明亮单个InAsP量子点的位置选择生长。我们证明了发射速率对发射波长和纳米线直径的显着依赖性。使用适合点的发射波长的适当设计的波导，对于在电信O波段发射的量子点，计数率可增加近2个数量级（0.4到35 kcps），显示出很高的单光子纯度低，多光子发射概率低至2％。使用发射波长优化的波导，我们演示了单个InAsP量子点的明亮，窄线宽发射，其前所未有的调谐范围为880至1550 nm。
更新日期：2018-04-04
中文翻译：
位置控制的InP纳米线中电信波长处的明亮单个InAsP量子点：光子波导的作用
我们报告了嵌入在以电信波长发射的InP光子纳米线波导中的明亮单个InAsP量子点的位置选择生长。我们证明了发射速率对发射波长和纳米线直径的显着依赖性。使用适合点的发射波长的适当设计的波导，对于在电信O波段发射的量子点，计数率可增加近2个数量级（0.4到35 kcps），显示出很高的单光子纯度低，多光子发射概率低至2％。使用发射波长优化的波导，我们演示了单个InAsP量子点的明亮，窄线宽发射，其前所未有的调谐范围为880至1550 nm。
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