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Unity yield of deterministically positioned quantum dot single photon sources

التفاصيل البيبلوغرافية
العنوان: Unity yield of deterministically positioned quantum dot single photon sources
المؤلفون: Patrick Laferrière, Edith Yeung, Isabelle Miron, David B. Northeast, Sofiane Haffouz, Jean Lapointe, Marek Korkusinski, Philip J. Poole, Robin L. Williams, Dan Dalacu
المصدر: Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
بيانات النشر: Nature Portfolio, 2022.
سنة النشر: 2022
المجموعة: LCC:Medicine
LCC:Science
مصطلحات موضوعية: Medicine, Science
الوصف: Abstract We report on a platform for the production of single photon devices with a fabrication yield of 100%. The sources are based on InAsP quantum dots embedded within position-controlled bottom-up InP nanowires. Using optimized growth conditions, we produce large arrays of structures having highly uniform geometries. Collection efficiencies are as high as 83% and multiphoton emission probabilities as low as 0.6% with the distribution away from optimal values associated with the excitation of other charge complexes and re-excitation processes, respectively, inherent to the above-band excitation employed. Importantly, emission peak lineshapes have Lorentzian profiles indicating that linewidths are not limited by inhomogeneous broadening but rather pure dephasing, likely elastic carrier-phonon scattering due to a high phonon occupation. This work establishes nanowire-based devices as a viable route for the scalable fabrication of efficient single photon sources and provides a valuable resource for hybrid on-chip platforms currently being developed.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2045-2322
Relation: https://doaj.org/toc/2045-2322
DOI: 10.1038/s41598-022-10451-1
URL الوصول: https://doaj.org/article/8f5387a264b14bed846ee097b55d270e
رقم الأكسشن: edsdoj.8f5387a264b14bed846ee097b55d270e
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:20452322
DOI:10.1038/s41598-022-10451-1